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4 years agotarget/arm: Correct handling of PMCR_EL0.LC bit
Peter Maydell [Fri, 14 Feb 2020 17:51:12 +0000 (17:51 +0000)]
target/arm: Correct handling of PMCR_EL0.LC bit

The LC bit in the PMCR_EL0 register is supposed to be:
 * read/write
 * RES1 on an AArch64-only implementation
 * an architecturally UNKNOWN value on reset
(and use of LC==0 by software is deprecated).

We were implementing it incorrectly as read-only always zero,
though we do have all the code needed to test it and behave
accordingly.

Instead make it a read-write bit which resets to 1 always, which
satisfies all the architectural requirements above.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-18-peter.maydell@linaro.org

4 years agotarget/arm: Correct definition of PMCRDP
Peter Maydell [Fri, 14 Feb 2020 17:51:11 +0000 (17:51 +0000)]
target/arm: Correct definition of PMCRDP

The PMCR_EL0.DP bit is bit 5, which is 0x20, not 0x10.  0x10 is 'X'.
Correct our #define of PMCRDP and add the missing PMCRX.

We do have the correct behaviour for handling the DP bit being
set, so this fixes a guest-visible bug.

Fixes: 033614c47de
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-17-peter.maydell@linaro.org

4 years agotarget/arm: Provide ARMv8.4-PMU in '-cpu max'
Peter Maydell [Fri, 14 Feb 2020 17:51:10 +0000 (17:51 +0000)]
target/arm: Provide ARMv8.4-PMU in '-cpu max'

Set the ID register bits to provide ARMv8.4-PMU (and implicitly
also ARMv8.1-PMU) in the 'max' CPU.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-16-peter.maydell@linaro.org

4 years agotarget/arm: Implement ARMv8.4-PMU extension
Peter Maydell [Fri, 14 Feb 2020 17:51:09 +0000 (17:51 +0000)]
target/arm: Implement ARMv8.4-PMU extension

The ARMv8.4-PMU extension adds:
 * one new required event, STALL
 * one new system register PMMIR_EL1

(There are also some more L1-cache related events, but since
we don't implement any cache we don't provide these, in the
same way we don't provide the base-PMUv3 cache events.)

The STALL event "counts every attributable cycle on which no
attributable instruction or operation was sent for execution on this
PE".  QEMU doesn't stall in this sense, so this is another
always-reads-zero event.

The PMMIR_EL1 register is a read-only register providing
implementation-specific information about the PMU; currently it has
only one field, SLOTS, which defines behaviour of the STALL_SLOT PMU
event.  Since QEMU doesn't implement the STALL_SLOT event, we can
validly make the register read zero.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-15-peter.maydell@linaro.org

4 years agotarget/arm: Implement ARMv8.1-PMU extension
Peter Maydell [Fri, 14 Feb 2020 17:51:08 +0000 (17:51 +0000)]
target/arm: Implement ARMv8.1-PMU extension

The ARMv8.1-PMU extension requires:
 * the evtCount field in PMETYPER<n>_EL0 is 16 bits, not 10
 * MDCR_EL2.HPMD allows event counting to be disabled at EL2
 * two new required events, STALL_FRONTEND and STALL_BACKEND
 * ID register bits in ID_AA64DFR0_EL1 and ID_DFR0

We already implement the 16-bit evtCount field and the
HPMD bit, so all that is missing is the two new events:
  STALL_FRONTEND
   "counts every cycle counted by the CPU_CYCLES event on which no
    operation was issued because there are no operations available
    to issue to this PE from the frontend"
  STALL_BACKEND
   "counts every cycle counted by the CPU_CYCLES event on which no
    operation was issued because the backend is unable to accept
    any available operations from the frontend"

QEMU never stalls in this sense, so our implementation is trivial:
always return a zero count.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-14-peter.maydell@linaro.org

4 years agotarget/arm: Read debug-related ID registers from KVM
Peter Maydell [Fri, 14 Feb 2020 17:51:07 +0000 (17:51 +0000)]
target/arm: Read debug-related ID registers from KVM

Now we have isar_feature test functions that look at fields in the
ID_AA64DFR0_EL1 and ID_DFR0 ID registers, add the code that reads
these register values from KVM so that the checks behave correctly
when we're using KVM.

No isar_feature function tests ID_AA64DFR1_EL1 or DBGDIDR yet, but we
add it to maintain the invariant that every field in the
ARMISARegisters struct is populated for a KVM CPU and can be relied
on.  This requirement isn't actually written down yet, so add a note
to the relevant comment.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214175116.9164-13-peter.maydell@linaro.org

4 years agotarget/arm: Move DBGDIDR into ARMISARegisters
Peter Maydell [Fri, 14 Feb 2020 17:51:06 +0000 (17:51 +0000)]
target/arm: Move DBGDIDR into ARMISARegisters

We're going to want to read the DBGDIDR register from KVM in
a subsequent commit, which means it needs to be in the
ARMISARegisters sub-struct. Move it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214175116.9164-12-peter.maydell@linaro.org

4 years agotarget/arm: Stop assuming DBGDIDR always exists
Peter Maydell [Fri, 14 Feb 2020 17:51:05 +0000 (17:51 +0000)]
target/arm: Stop assuming DBGDIDR always exists

The AArch32 DBGDIDR defines properties like the number of
breakpoints, watchpoints and context-matching comparators.  On an
AArch64 CPU, the register may not even exist if AArch32 is not
supported at EL1.

Currently we hard-code use of DBGDIDR to identify the number of
breakpoints etc; this works for all our TCG CPUs, but will break if
we ever add an AArch64-only CPU.  We also have an assert() that the
AArch32 and AArch64 registers match, which currently works only by
luck for KVM because we don't populate either of these ID registers
from the KVM vCPU and so they are both zero.

Clean this up so we have functions for finding the number
of breakpoints, watchpoints and context comparators which look
in the appropriate ID register.

This allows us to drop the "check that AArch64 and AArch32 agree
on the number of breakpoints etc" asserts:
 * we no longer look at the AArch32 versions unless that's the
   right place to be looking
 * it's valid to have a CPU (eg AArch64-only) where they don't match
 * we shouldn't have been asserting the validity of ID registers
   in a codepath used with KVM anyway

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214175116.9164-11-peter.maydell@linaro.org

4 years agotarget/arm: Add _aa64_ and _any_ versions of pmu_8_1 isar checks
Peter Maydell [Fri, 14 Feb 2020 17:51:04 +0000 (17:51 +0000)]
target/arm: Add _aa64_ and _any_ versions of pmu_8_1 isar checks

Add the 64-bit version of the "is this a v8.1 PMUv3?"
ID register check function, and the _any_ version that
checks for either AArch32 or AArch64 support. We'll use
this in a later commit.

We don't (yet) do any isar_feature checks on ID_AA64DFR1_EL1,
but we move id_aa64dfr1 into the ARMISARegisters struct with
id_aa64dfr0, for consistency.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-10-peter.maydell@linaro.org

4 years agotarget/arm: Define an aa32_pmu_8_1 isar feature test function
Peter Maydell [Fri, 14 Feb 2020 17:51:03 +0000 (17:51 +0000)]
target/arm: Define an aa32_pmu_8_1 isar feature test function

Instead of open-coding a check on the ID_DFR0 PerfMon ID register
field, create a standardly-named isar_feature for "does AArch32 have
a v8.1 PMUv3" and use it.

This entails moving the id_dfr0 field into the ARMISARegisters struct.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-9-peter.maydell@linaro.org

4 years agotarget/arm: Use FIELD macros for clearing ID_DFR0 PERFMON field
Peter Maydell [Fri, 14 Feb 2020 17:51:02 +0000 (17:51 +0000)]
target/arm: Use FIELD macros for clearing ID_DFR0 PERFMON field

We already define FIELD macros for ID_DFR0, so use them in the
one place where we're doing direct bit value manipulation.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-8-peter.maydell@linaro.org

4 years agotarget/arm: Add and use FIELD definitions for ID_AA64DFR0_EL1
Peter Maydell [Fri, 14 Feb 2020 17:51:01 +0000 (17:51 +0000)]
target/arm: Add and use FIELD definitions for ID_AA64DFR0_EL1

Add FIELD() definitions for the ID_AA64DFR0_EL1 and use them
where we currently have hard-coded bit values.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-7-peter.maydell@linaro.org

4 years agotarget/arm: Factor out PMU register definitions
Peter Maydell [Fri, 14 Feb 2020 17:51:00 +0000 (17:51 +0000)]
target/arm: Factor out PMU register definitions

Pull the code that defines the various PMU registers out
into its own function, matching the pattern we have
already for the debug registers.

Apart from one style fix to a multi-line comment, this
is purely movement of code with no changes to it.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-6-peter.maydell@linaro.org

4 years agotarget/arm: Define and use any_predinv isar_feature test
Peter Maydell [Fri, 14 Feb 2020 17:50:59 +0000 (17:50 +0000)]
target/arm: Define and use any_predinv isar_feature test

Instead of open-coding "ARM_FEATURE_AARCH64 ? aa64_predinv: aa32_predinv",
define and use an any_predinv isar_feature test function.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-5-peter.maydell@linaro.org

4 years agotarget/arm: Add isar_feature_any_fp16 and document naming/usage conventions
Peter Maydell [Fri, 14 Feb 2020 17:50:58 +0000 (17:50 +0000)]
target/arm: Add isar_feature_any_fp16 and document naming/usage conventions

Our current usage of the isar_feature feature tests almost always
uses an _aa32_ test when the code path is known to be AArch32
specific and an _aa64_ test when the code path is known to be
AArch64 specific. There is just one exception: in the vfp_set_fpscr
helper we check aa64_fp16 to determine whether the FZ16 bit in
the FP(S)CR exists, but this code is also used for AArch32.
There are other places in future where we're likely to want
a general "does this feature exist for either AArch32 or
AArch64" check (typically where architecturally the feature exists
for both CPU states if it exists at all, but the CPU might be
AArch32-only or AArch64-only, and so only have one set of ID
registers).

Introduce a new category of isar_feature_* functions:
isar_feature_any_foo() should be tested when what we want to
know is "does this feature exist for either AArch32 or AArch64",
and always returns the logical OR of isar_feature_aa32_foo()
and isar_feature_aa64_foo().

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-4-peter.maydell@linaro.org

4 years agotarget/arm: Check aa32_pan in take_aarch32_exception(), not aa64_pan
Peter Maydell [Fri, 14 Feb 2020 17:50:57 +0000 (17:50 +0000)]
target/arm: Check aa32_pan in take_aarch32_exception(), not aa64_pan

In take_aarch32_exception(), we know we are dealing with a CPU that
has AArch32, so the right isar_feature test is aa32_pan, not aa64_pan.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214175116.9164-3-peter.maydell@linaro.org

4 years agotarget/arm: Add _aa32_ to isar_feature functions testing 32-bit ID registers
Peter Maydell [Fri, 14 Feb 2020 17:50:56 +0000 (17:50 +0000)]
target/arm: Add _aa32_ to isar_feature functions testing 32-bit ID registers

Enforce a convention that an isar_feature function that tests a
32-bit ID register always has _aa32_ in its name, and one that
tests a 64-bit ID register always has _aa64_ in its name.
We already follow this except for three cases: thumb_div,
arm_div and jazelle, which all need _aa32_ adding.

(As noted in the comment, isar_feature_aa32_fp16_arith()
is an exception in that it currently tests ID_AA64PFR0_EL1,
but will switch to MVFR1 once we've properly implemented
FP16 for AArch32.)

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-2-peter.maydell@linaro.org

4 years agotarget/arm: Split out aa64_va_parameter_tbi, aa64_va_parameter_tbid
Richard Henderson [Sun, 16 Feb 2020 19:43:43 +0000 (11:43 -0800)]
target/arm: Split out aa64_va_parameter_tbi, aa64_va_parameter_tbid

For the purpose of rebuild_hflags_a64, we do not need to compute
all of the va parameters, only tbi.  Moreover, we can compute them
in a form that is more useful to storing in hflags.

This eliminates the need for aa64_va_parameter_both, so fold that
in to aa64_va_parameter.  The remaining calls to aa64_va_parameter
are in get_phys_addr_lpae and in pauth_helper.c.

This reduces the total cpu consumption of aa64_va_parameter in a
kernel boot plus a kvm guest kernel boot from 3% to 0.5%.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200216194343.21331-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Remove ttbr1_valid check from get_phys_addr_lpae
Richard Henderson [Sun, 16 Feb 2020 19:43:42 +0000 (11:43 -0800)]
target/arm: Remove ttbr1_valid check from get_phys_addr_lpae

Now that aa64_va_parameters_both sets select based on the number
of ranges in the regime, the ttbr1_valid check is redundant.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200216194343.21331-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Fix select for aa64_va_parameters_both
Richard Henderson [Sun, 16 Feb 2020 19:43:41 +0000 (11:43 -0800)]
target/arm: Fix select for aa64_va_parameters_both

Select should always be 0 for a regime with one range.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200216194343.21331-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Use bit 55 explicitly for pauth
Richard Henderson [Sun, 16 Feb 2020 19:43:40 +0000 (11:43 -0800)]
target/arm: Use bit 55 explicitly for pauth

The psuedocode in aarch64/functions/pac/auth/Auth and
aarch64/functions/pac/strip/Strip always uses bit 55 for
extfield and do not consider if the current regime has 2 ranges.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200216194343.21331-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Flush high bits of sve register after AdvSIMD INS
Richard Henderson [Fri, 14 Feb 2020 19:46:43 +0000 (11:46 -0800)]
target/arm: Flush high bits of sve register after AdvSIMD INS

Writes to AdvSIMD registers flush the bits above 128.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214194643.23317-5-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Flush high bits of sve register after AdvSIMD ZIP/UZP/TRN
Richard Henderson [Fri, 14 Feb 2020 19:46:42 +0000 (11:46 -0800)]
target/arm: Flush high bits of sve register after AdvSIMD ZIP/UZP/TRN

Writes to AdvSIMD registers flush the bits above 128.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214194643.23317-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Flush high bits of sve register after AdvSIMD TBL/TBX
Richard Henderson [Fri, 14 Feb 2020 19:46:41 +0000 (11:46 -0800)]
target/arm: Flush high bits of sve register after AdvSIMD TBL/TBX

Writes to AdvSIMD registers flush the bits above 128.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214194643.23317-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotarget/arm: Flush high bits of sve register after AdvSIMD EXT
Richard Henderson [Fri, 14 Feb 2020 19:46:40 +0000 (11:46 -0800)]
target/arm: Flush high bits of sve register after AdvSIMD EXT

Writes to AdvSIMD registers flush the bits above 128.

Buglink: https://bugs.launchpad.net/bugs/1863247
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214194643.23317-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoz2: Make providing flash images non-mandatory
Guenter Roeck [Mon, 17 Feb 2020 21:09:03 +0000 (13:09 -0800)]
z2: Make providing flash images non-mandatory

Up to now, the z2 machine only boots if a flash image is provided.
This is not really necessary; the machine can boot from initrd or from
SD without it. At the same time, having to provide dummy flash images
is a nuisance and does not add any real value. Make it optional.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200217210903.18602-1-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agomainstone: Make providing flash images non-mandatory
Guenter Roeck [Mon, 17 Feb 2020 21:08:24 +0000 (13:08 -0800)]
mainstone: Make providing flash images non-mandatory

Up to now, the mainstone machine only boots if two flash images are
provided. This is not really necessary; the machine can boot from initrd
or from SD without it. At the same time, having to provide dummy flash
images is a nuisance and does not add any real value. Make it optional.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200217210824.18513-1-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agohw/misc/iotkit-secctl: Fix writing to 'PPC Interrupt Clear' register
Philippe Mathieu-Daudé [Mon, 17 Feb 2020 13:29:22 +0000 (14:29 +0100)]
hw/misc/iotkit-secctl: Fix writing to 'PPC Interrupt Clear' register

Fix warning reported by Clang static code analyzer:

    CC      hw/misc/iotkit-secctl.o
  hw/misc/iotkit-secctl.c:343:9: warning: Value stored to 'value' is never read
          value &= 0x00f000f3;
          ^        ~~~~~~~~~~

Fixes: b3717c23e1c
Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200217132922.24607-1-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoaspeed/scu: Implement chip ID register
Joel Stanley [Tue, 18 Feb 2020 16:00:10 +0000 (16:00 +0000)]
aspeed/scu: Implement chip ID register

This returns a fixed but non-zero value for the chip id.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200121013302.43839-3-joel@jms.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoaspeed/scu: Create separate write callbacks
Joel Stanley [Tue, 18 Feb 2020 16:00:10 +0000 (16:00 +0000)]
aspeed/scu: Create separate write callbacks

This splits the common write callback into separate ast2400 and ast2500
implementations. This makes it clearer when implementing differing
behaviour.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200121013302.43839-2-joel@jms.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.0-20200221' into staging
Peter Maydell [Fri, 21 Feb 2020 14:20:42 +0000 (14:20 +0000)]
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.0-20200221' into staging

ppc patch queue 2020-02-21

Here's the next patch of ppc target patches.  Highlights are:
  * Some fixes for CAS / unplug interactions
  * Remove some leaks of device trees
  * Some fixes for the PHB3 and PHB4 devices
  * Support for NVDIMMs on the pseries machine type
  * Assorted other fixes and cleanups

# gpg: Signature made Fri 21 Feb 2020 03:35:40 GMT
# gpg:                using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-5.0-20200221:
  hw/ppc/virtex_ml507:fix leak of fdevice tree blob
  spapr: Fix handling of unplugged devices during CAS and migration
  spapr: Don't use spapr_drc_needed() in CAS code
  ppc: free 'fdt' after reset the machine
  target/ppc/cpu.h: Clean up comments in the struct CPUPPCState definition
  target/ppc/cpu.h: Move fpu related members closer in cpu env
  target/ppc: Fix typo in comments
  spapr: Allow changing offset for -kernel image
  pnv/phb3: Add missing break statement
  pnv/phb4: Fix error path in pnv_pec_realize()
  pnv/phb3: Convert 1u to 1ull
  target/ppc/cpu.h: Remove duplicate includes
  spapr: Add Hcalls to support PAPR NVDIMM device
  spapr: Add NVDIMM device support
  nvdimm: add uuid property to nvdimm
  mem: move nvdimm_device_list to utilities
  ppc: function to setup latest class options
  ppc/pnv: Fix PCI_EXPRESS dependency
  qtest: Fix rtas dependencies
  spapr/rtas: Print message from "ibm,os-term"

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-02-20' into staging
Peter Maydell [Fri, 21 Feb 2020 11:24:56 +0000 (11:24 +0000)]
Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-02-20' into staging

Block patches:
- qemu-img convert: New --target-is-zero parameter
- qcow2: Specify non-default compression type flag
- optionally flat output for query-named-block-nodes
- some fixes
- pseudo-creation of images on block devices is now done by a generic
  block layer function

# gpg: Signature made Thu 20 Feb 2020 16:05:34 GMT
# gpg:                using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg:                issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2020-02-20:
  iotests: Test snapshot -l field separation
  block: Fix VM size field width in snapshot dump
  iotests: Test convert -n -B to backing-less target
  qemu-img: Fix convert -n -B for backing-less targets
  iotests: Add test for image creation fallback
  iscsi: Drop iscsi_co_create_opts()
  file-posix: Drop hdev_co_create_opts()
  block: Generic file creation fallback
  block/nbd: Fix hang in .bdrv_close()
  iotests/279: Fix for non-qcow2 formats
  block/backup-top: fix flags handling
  block: always fill entire LUKS header space with zeros
  qemu-img: Add --target-is-zero to convert
  qapi: Allow getting flat output from 'query-named-block-nodes'
  iotests/147: Fix drive parameters
  iotests: Remove the superfluous 2nd check for the availability of quorum
  docs: qcow2: introduce compression type feature
  docs: improve qcow2 spec about extending image header

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agohw/ppc/virtex_ml507:fix leak of fdevice tree blob
Chen Qun [Tue, 18 Feb 2020 09:11:53 +0000 (17:11 +0800)]
hw/ppc/virtex_ml507:fix leak of fdevice tree blob

The device tree blob returned by load_device_tree is malloced.
We should free it after cpu_physical_memory_write().

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Message-Id: <20200218091154.21696-3-kuhn.chenqun@huawei.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agospapr: Fix handling of unplugged devices during CAS and migration
Greg Kurz [Fri, 14 Feb 2020 15:01:28 +0000 (16:01 +0100)]
spapr: Fix handling of unplugged devices during CAS and migration

We already detect if a device is being hot plugged before CAS to trigger
a CAS reboot and during migration to migrate the state of the associated
DRC. But hot unplugging a device is also an asynchronous operation that
requires the guest to take action. This means that if the guest is migrated
after the hot unplug event was sent but before it could release the device
with RTAS, the destination QEMU doesn't know about the pending unplug
operation and doesn't actually remove the device when the guest finally
releases it.

Similarly, if the unplug request is fired before CAS, the guest isn't
notified of the change, just like with hotplug. It ends up booting with
the device still present in the DT and configures it, just like it was
never removed. Even weirder, since the event is still queued, it will
be eventually processed when some other unrelated event is posted to
the guest.

Enhance spapr_drc_transient() to also return true if an unplug request is
pending. This fixes the issue at CAS with a CAS reboot request and
causes the DRC state to be migrated. Some extra care is still needed to
inform the destination that an unplug request is pending : migrate the
unplug_requested field of the DRC in an optional subsection. This might
break backwards migration, but this is still better than ending with
an inconsistent guest.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158169248798.3465937.1108351365840514270.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agospapr: Don't use spapr_drc_needed() in CAS code
Greg Kurz [Fri, 14 Feb 2020 15:01:22 +0000 (16:01 +0100)]
spapr: Don't use spapr_drc_needed() in CAS code

We currently don't support hotplug of devices between boot and CAS. If
this happens a CAS reboot is triggered. We detect this during CAS using
the spapr_drc_needed() function which is essentially a VMStateDescription
.needed callback. Even if the condition for CAS reboot happens to be the
same as for DRC migration, it looks wrong to piggyback a migration helper
for this.

Introduce a helper with slightly more explicit name and use it in both CAS
and DRC migration code. Since a subsequent patch will enhance this helper
to cover the case of hot unplug, let's go for spapr_drc_transient(). While
here convert spapr_hotplugged_dev_before_cas() to the "transient" wording as
well.

This doesn't change any behaviour.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158169248180.3465937.9531405453362718771.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agoppc: free 'fdt' after reset the machine
Pan Nengyuan [Fri, 14 Feb 2020 03:32:06 +0000 (11:32 +0800)]
ppc: free 'fdt' after reset the machine

'fdt' forgot to clean both e500 and pnv when we call 'system_reset' on ppc,
this patch fix it. The leak stacks are as follow:

Direct leak of 4194304 byte(s) in 4 object(s) allocated from:
    #0 0x7fafe37dd970 in __interceptor_calloc (/lib64/libasan.so.5+0xef970)
    #1 0x7fafe2e3149d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5249d)
    #2 0x561876f7f80d in create_device_tree /mnt/sdb/qemu-new/qemu/device_tree.c:40
    #3 0x561876b7ac29 in ppce500_load_device_tree /mnt/sdb/qemu-new/qemu/hw/ppc/e500.c:364
    #4 0x561876b7f437 in ppce500_reset_device_tree /mnt/sdb/qemu-new/qemu/hw/ppc/e500.c:617
    #5 0x56187718b1ae in qemu_devices_reset /mnt/sdb/qemu-new/qemu/hw/core/reset.c:69
    #6 0x561876f6938d in qemu_system_reset /mnt/sdb/qemu-new/qemu/vl.c:1412
    #7 0x561876f6a25b in main_loop_should_exit /mnt/sdb/qemu-new/qemu/vl.c:1645
    #8 0x561876f6a398 in main_loop /mnt/sdb/qemu-new/qemu/vl.c:1679
    #9 0x561876f7da8e in main /mnt/sdb/qemu-new/qemu/vl.c:4438
    #10 0x7fafde16b812 in __libc_start_main ../csu/libc-start.c:308
    #11 0x5618765c055d in _start (/mnt/sdb/qemu-new/qemu/build/ppc64-softmmu/qemu-system-ppc64+0x2b1555d)

Direct leak of 1048576 byte(s) in 1 object(s) allocated from:
    #0 0x7fc0a6f1b970 in __interceptor_calloc (/lib64/libasan.so.5+0xef970)
    #1 0x7fc0a656f49d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5249d)
    #2 0x55eb05acd2ca in pnv_dt_create /mnt/sdb/qemu-new/qemu/hw/ppc/pnv.c:507
    #3 0x55eb05ace5bf in pnv_reset /mnt/sdb/qemu-new/qemu/hw/ppc/pnv.c:578
    #4 0x55eb05f2f395 in qemu_system_reset /mnt/sdb/qemu-new/qemu/vl.c:1410
    #5 0x55eb05f43850 in main /mnt/sdb/qemu-new/qemu/vl.c:4403
    #6 0x7fc0a18a9812 in __libc_start_main ../csu/libc-start.c:308
    #7 0x55eb0558655d in _start (/mnt/sdb/qemu-new/qemu/build/ppc64-softmmu/qemu-system-ppc64+0x2b1555d)

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200214033206.4395-1-pannengyuan@huawei.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agotarget/ppc/cpu.h: Clean up comments in the struct CPUPPCState definition
BALATON Zoltan [Sun, 16 Feb 2020 21:23:54 +0000 (22:23 +0100)]
target/ppc/cpu.h: Clean up comments in the struct CPUPPCState definition

The cpu env struct is quite complex but comments supposed to explain
it in its definition just make it harder to read. Reformat and reword
some comments to make it clearer and more readable.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <8707144ab1ccf9c5c89a39c2d7a0b02307ca25d4.1581888834.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agotarget/ppc/cpu.h: Move fpu related members closer in cpu env
BALATON Zoltan [Sun, 16 Feb 2020 21:23:54 +0000 (22:23 +0100)]
target/ppc/cpu.h: Move fpu related members closer in cpu env

Move fp_status and fpscr closer to other floating point and vector
related members in cpu env definition so they are in one group.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <5b50e9e7eec2c383ae878b397d0b2927efc9ea43.1581888834.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agotarget/ppc: Fix typo in comments
BALATON Zoltan [Thu, 13 Feb 2020 23:57:34 +0000 (00:57 +0100)]
target/ppc: Fix typo in comments

"Deferred" was misspelled as "differed" in some comments, correct this
typo,

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <20200214155748.0896B745953@zero.eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agospapr: Allow changing offset for -kernel image
Alexey Kardashevskiy [Mon, 3 Feb 2020 03:29:42 +0000 (14:29 +1100)]
spapr: Allow changing offset for -kernel image

This allows moving the kernel in the guest memory. The option is useful
for step debugging (as Linux is linked at 0x0); it also allows loading
grub which is normally linked to run at 0x20000.

This uses the existing kernel address by default.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20200203032943.121178-6-aik@ozlabs.ru>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agopnv/phb3: Add missing break statement
Greg Kurz [Wed, 12 Feb 2020 18:54:12 +0000 (19:54 +0100)]
pnv/phb3: Add missing break statement

We obviously don't want to print out an error message if addr points to
a valid register.

Reported-by: Coverity CID 1419391 Missing break in switch
Fixes: 9ae1329ee2fe "ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge"
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158153365202.3229002.11521084761048102466.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agopnv/phb4: Fix error path in pnv_pec_realize()
Greg Kurz [Wed, 12 Feb 2020 18:54:06 +0000 (19:54 +0100)]
pnv/phb4: Fix error path in pnv_pec_realize()

Obviously, we want to pass &local_err so that we can check it then
line below, not errp.

Reported-by: Coverity CID 1419395 'Constant' variable guards dead code
Fixes: 4f9924c4d4cf "ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge"
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158153364605.3229002.2796177658957390343.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agopnv/phb3: Convert 1u to 1ull
Greg Kurz [Wed, 12 Feb 2020 18:54:00 +0000 (19:54 +0100)]
pnv/phb3: Convert 1u to 1ull

As reported by Coverity defect CID 1419397, the 'j' variable goes up to
63 and shouldn't be used to left shift a 32-bit integer.

The result of the operation goes to a 64-bit integer : use a 64-bit
constant.

Reported-by: Coverity CID 1419397 Bad bit shift operation
Fixes: 9ae1329ee2fe "ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge"
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158153364010.3229002.8004283672455615950.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agotarget/ppc/cpu.h: Remove duplicate includes
BALATON Zoltan [Wed, 12 Feb 2020 22:26:14 +0000 (23:26 +0100)]
target/ppc/cpu.h: Remove duplicate includes

Commit 74433bf083b added some includes but added them twice. Since
these are guarded against multiple inclusion including them once is
enough.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <20200212223207.5A37574637F@zero.eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agospapr: Add Hcalls to support PAPR NVDIMM device
Shivaprasad G Bhat [Mon, 10 Feb 2020 04:56:42 +0000 (22:56 -0600)]
spapr: Add Hcalls to support PAPR NVDIMM device

This patch implements few of the necessary hcalls for the nvdimm support.

PAPR semantics is such that each NVDIMM device is comprising of multiple
SCM(Storage Class Memory) blocks. The guest requests the hypervisor to
bind each of the SCM blocks of the NVDIMM device using hcalls. There can
be SCM block unbind requests in case of driver errors or unplug(not
supported now) use cases. The NVDIMM label read/writes are done through
hcalls.

Since each virtual NVDIMM device is divided into multiple SCM blocks,
the bind, unbind, and queries using hcalls on those blocks can come
independently. This doesn't fit well into the qemu device semantics,
where the map/unmap are done at the (whole)device/object level granularity.
The patch doesnt actually bind/unbind on hcalls but let it happen at the
device_add/del phase itself instead.

The guest kernel makes bind/unbind requests for the virtual NVDIMM device
at the region level granularity. Without interleaving, each virtual NVDIMM
device is presented as a separate guest physical address range. So, there
is no way a partial bind/unbind request can come for the vNVDIMM in a
hcall for a subset of SCM blocks of a virtual NVDIMM. Hence it is safe to
do bind/unbind everything during the device_add/del.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Message-Id: <158131059899.2897.11515211602702956854.stgit@lep8c.aus.stglabs.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agospapr: Add NVDIMM device support
Shivaprasad G Bhat [Mon, 10 Feb 2020 04:56:31 +0000 (22:56 -0600)]
spapr: Add NVDIMM device support

Add support for NVDIMM devices for sPAPR. Piggyback on existing nvdimm
device interface in QEMU to support virtual NVDIMM devices for Power.
Create the required DT entries for the device (some entries have
dummy values right now).

The patch creates the required DT node and sends a hotplug
interrupt to the guest. Guest is expected to undertake the normal
DR resource add path in response and start issuing PAPR SCM hcalls.

The device support is verified based on the machine version unlike x86.

This is how it can be used ..
Ex :
For coldplug, the device to be added in qemu command line as shown below
-object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm0,share=yes,size=1073872896
-device nvdimm,label-size=128k,uuid=75a3cdd7-6a2f-4791-8d15-fe0a920e8e9e,memdev=memnvdimm0,id=nvdimm0,slot=0

For hotplug, the device to be added from monitor as below
object_add memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm0,share=yes,size=1073872896
device_add nvdimm,label-size=128k,uuid=75a3cdd7-6a2f-4791-8d15-fe0a920e8e9e,memdev=memnvdimm0,id=nvdimm0,slot=0

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
               [Early implementation]
Message-Id: <158131058078.2897.12767731856697459923.stgit@lep8c.aus.stglabs.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agonvdimm: add uuid property to nvdimm
Shivaprasad G Bhat [Mon, 10 Feb 2020 04:56:13 +0000 (22:56 -0600)]
nvdimm: add uuid property to nvdimm

For ppc64, PAPR requires the nvdimm device to have UUID property
set in the device tree. Add an option to get it from the user.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <158131056931.2897.14057087440721445976.stgit@lep8c.aus.stglabs.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agomem: move nvdimm_device_list to utilities
Shivaprasad G Bhat [Mon, 10 Feb 2020 04:56:02 +0000 (22:56 -0600)]
mem: move nvdimm_device_list to utilities

nvdimm_device_list is required for parsing the list for devices
in subsequent patches. Move it to common utility area.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <158131055857.2897.15658377276504711773.stgit@lep8c.aus.stglabs.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agoppc: function to setup latest class options
Michael S. Tsirkin [Fri, 7 Feb 2020 06:46:37 +0000 (01:46 -0500)]
ppc: function to setup latest class options

We are going to add more init for the latest machine, so move the setup
to a function so we don't have to change the DEFINE_SPAPR_MACHINE macro
each time.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20200207064628.1196095-1-mst@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agoppc/pnv: Fix PCI_EXPRESS dependency
Laurent Vivier [Wed, 5 Feb 2020 23:20:16 +0000 (00:20 +0100)]
ppc/pnv: Fix PCI_EXPRESS dependency

When PHB4 bridge has been added, the dependencies to PCIE_PORT has been
added to XIVE_SPAPR and indirectly to PSERIES.
The build of the PowerNV machine is fine while we also build the PSERIES
machine.
If we disable the PSERIES machine, the PowerNV build fails because the
PCI Express files are not built:

/usr/bin/ld: hw/ppc/pnv.o: in function `pnv_chip_power8_pic_print_info':
.../hw/ppc/pnv.c:623: undefined reference to `pnv_phb3_msi_pic_print_info'
/usr/bin/ld: hw/ppc/pnv.o: in function `pnv_chip_power9_pic_print_info':
.../hw/ppc/pnv.c:639: undefined reference to `pnv_phb4_pic_print_info'
/usr/bin/ld: ../hw/usb/hcd-ehci-pci.o: in function `usb_ehci_pci_write_config':
.../hw/usb/hcd-ehci-pci.c:129: undefined reference to `pci_default_write_config'
/usr/bin/ld: ../hw/usb/hcd-ehci-pci.o: in function `usb_ehci_pci_realize':
.../hw/usb/hcd-ehci-pci.c:68: undefined reference to `pci_allocate_irq'
/usr/bin/ld: .../hw/usb/hcd-ehci-pci.c:72: undefined reference to `pci_register_bar'
/usr/bin/ld: ../hw/usb/hcd-ehci-pci.o:(.data.rel+0x50): undefined reference to `vmstate_pci_device'

This patch fixes the problem by adding needed dependencies to POWERNV.

Fixes: 4f9924c4d4cf ("ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge")
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20200205232016.588202-3-lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agoqtest: Fix rtas dependencies
Laurent Vivier [Wed, 5 Feb 2020 23:20:15 +0000 (00:20 +0100)]
qtest: Fix rtas dependencies

qtest "rtas" command is only available with pseries not all ppc64 targets,
so if I try to compile only powernv machine, the build fails with:

  /usr/bin/ld: qtest.o: in function `qtest_process_command':
  .../qtest.c:645: undefined reference to `qtest_rtas_call'

We fix this by enabling rtas command only with pseries machine.

Fixes: eeddd59f5962 ("tests: add RTAS command in the protocol")
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20200205232016.588202-2-lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agospapr/rtas: Print message from "ibm,os-term"
Alexey Kardashevskiy [Mon, 3 Feb 2020 03:20:44 +0000 (14:20 +1100)]
spapr/rtas: Print message from "ibm,os-term"

The "ibm,os-term" RTAS call has a single parameter which is a pointer to
a message from the guest kernel about the termination cause; this prints
it.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20200203032044.118585-1-aik@ozlabs.ru>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
4 years agoMerge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-5.0-pull-request...
Peter Maydell [Thu, 20 Feb 2020 17:35:42 +0000 (17:35 +0000)]
Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-5.0-pull-request' into staging

Implement membarrier, SO_RCVTIMEO and SO_SNDTIMEO
Disable by default build of fdt, slirp and tools with linux-user
Improve strace and use qemu_log to send trace to a file
Add partial ALSA ioctl supports

# gpg: Signature made Thu 20 Feb 2020 09:20:20 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-5.0-pull-request:
  linux-user: Add support for selected alsa timer instructions using ioctls
  linux-user: Add support for getting/setting selected alsa timer parameters using ioctls
  linux-user: Add support for selecting alsa timer using ioctl
  linux-user: Add support for getting/setting specified alsa timer parameters using ioctls
  linux-user: Add support for getting alsa timer version and id
  linux-user: remove gemu_log from the linux-user tree
  linux-user: Use `qemu_log' for strace
  linux-user: Use `qemu_log' for non-strace logging
  configure: Avoid compiling system tools on user build by default
  linux-user/strace: Improve output of various syscalls
  configure: linux-user doesn't need neither fdt nor slirp
  linux-user: implement getsockopt SO_RCVTIMEO and SO_SNDTIMEO
  linux-user: Implement membarrier syscall

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-pull-request' into...
Peter Maydell [Thu, 20 Feb 2020 16:51:19 +0000 (16:51 +0000)]
Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-pull-request' into staging

Fix memory leak with fdt
cosmetic change in code and logs
update mailmap

# gpg: Signature made Wed 19 Feb 2020 10:15:56 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-pull-request:
  hw/xtensa/xtfpga:fix leak of fdevice tree blob
  hw/nios2:fix leak of fdevice tree blob
  hw/net/rocker: Report unimplemented feature with qemu_log_mask(UNIMP)
  hw/block/pflash_cfi02: Remove unneeded variable assignment
  hw/display/qxl: Remove unneeded variable assignment
  contrib/rdmacm-mux: Remove superfluous semicolon
  tests/qtest/libqos/qgraph: Remove superfluous semicolons
  target/i386/whpx: Remove superfluous semicolon
  ui/input-barrier: Remove superfluous semicolon
  hw/vfio/display: Remove superfluous semicolon
  hw/scsi/esp: Remove superfluous semicolon
  hw/m68k/next-cube: Remove superfluous semicolon
  hw/arm/xlnx-versal: Remove superfluous semicolon
  audio/alsaaudio: Remove superfluous semicolons
  scripts/checkpatch.pl: Detect superfluous semicolon in C code
  Report stringified errno in VFIO related errors
  mailmap: Add entry for Yu-Chen Lin

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoiotests: Test snapshot -l field separation
Max Reitz [Fri, 17 Jan 2020 10:58:59 +0000 (11:58 +0100)]
iotests: Test snapshot -l field separation

Add a test that all fields in "qemu-img snapshot -l"s output are
separated by spaces.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200117105859.241818-3-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[mreitz: Renamed test from 284 to 286]
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoblock: Fix VM size field width in snapshot dump
Max Reitz [Fri, 17 Jan 2020 10:58:58 +0000 (11:58 +0100)]
block: Fix VM size field width in snapshot dump

When printing the snapshot list (e.g. with qemu-img snapshot -l), the VM
size field is only seven characters wide.  As of de38b5005e9, this is
not necessarily sufficient: We generally print three digits, and this
may require a decimal point.  Also, the unit field grew from something
as plain as "M" to " MiB".  This means that number and unit may take up
eight characters in total; but we also want spaces in front.

Considering previously the maximum width was four characters and the
field width was chosen to be three characters wider, let us adjust the
field width to be eleven now.

Fixes: de38b5005e946aa3714963ea4c501e279e7d3666
Buglink: https://bugs.launchpad.net/qemu/+bug/1859989
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200117105859.241818-2-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoiotests: Test convert -n -B to backing-less target
Max Reitz [Tue, 21 Jan 2020 15:59:15 +0000 (16:59 +0100)]
iotests: Test convert -n -B to backing-less target

This must not crash.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200121155915.98232-3-mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoqemu-img: Fix convert -n -B for backing-less targets
Max Reitz [Tue, 21 Jan 2020 15:59:14 +0000 (16:59 +0100)]
qemu-img: Fix convert -n -B for backing-less targets

s.target_has_backing does not reflect whether the target BDS has a
backing file; it only tells whether we should use a backing file during
conversion (specified by -B).

As such, if you use convert -n, the target does not necessarily actually
have a backing file, and then dereferencing out_bs->backing fails here.

When converting to an existing file, we should set
target_backing_sectors to a negative value, because first, as the
comment explains, this value is only used for optimization, so it is
always fine to do that.

Second, we use this value to determine where the target must be
initialized to zeroes (overlays are initialized to zero after the end of
their backing file).  When converting to an existing file, we cannot
assume that to be true.

Cc: qemu-stable@nongnu.org
Fixes: 351c8efff9ad809c822d55620df54d575d536f68
       ("qemu-img: Special post-backing convert handling")
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200121155915.98232-2-mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoiotests: Add test for image creation fallback
Max Reitz [Wed, 22 Jan 2020 16:45:32 +0000 (17:45 +0100)]
iotests: Add test for image creation fallback

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200122164532.178040-6-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
[mreitz: Added a note that NBD does not support resizing, which is why
         the second case is expected to fail]
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoiscsi: Drop iscsi_co_create_opts()
Max Reitz [Wed, 22 Jan 2020 16:45:31 +0000 (17:45 +0100)]
iscsi: Drop iscsi_co_create_opts()

The generic fallback implementation effectively does the same.

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200122164532.178040-5-mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agofile-posix: Drop hdev_co_create_opts()
Max Reitz [Wed, 22 Jan 2020 16:45:30 +0000 (17:45 +0100)]
file-posix: Drop hdev_co_create_opts()

The generic fallback implementation effectively does the same.

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200122164532.178040-4-mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoblock: Generic file creation fallback
Max Reitz [Wed, 22 Jan 2020 16:45:29 +0000 (17:45 +0100)]
block: Generic file creation fallback

If a protocol driver does not support image creation, we can see whether
maybe the file exists already.  If so, just truncating it will be
sufficient.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200122164532.178040-3-mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoblock/nbd: Fix hang in .bdrv_close()
Max Reitz [Wed, 22 Jan 2020 16:45:28 +0000 (17:45 +0100)]
block/nbd: Fix hang in .bdrv_close()

When nbd_close() is called from a coroutine, the connection_co never
gets to run, and thus nbd_teardown_connection() hangs.

This is because aio_co_enter() only puts the connection_co into the main
coroutine's wake-up queue, so this main coroutine needs to yield and
wait for connection_co to terminate.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200122164532.178040-2-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoiotests/279: Fix for non-qcow2 formats
Max Reitz [Thu, 19 Dec 2019 14:42:43 +0000 (15:42 +0100)]
iotests/279: Fix for non-qcow2 formats

First, driver=qcow2 will not work so well with non-qcow2 formats (and
this test claims to support qcow, qed, and vmdk).

Second, vmdk will always report the backing file format to be vmdk.
Filter that out so the output looks like for all other formats.

Third, the flat vmdk subformats do not support backing files, so they
will not work with this test.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20191219144243.1763246-1-mreitz@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoblock/backup-top: fix flags handling
Vladimir Sementsov-Ogievskiy [Fri, 7 Feb 2020 16:12:31 +0000 (19:12 +0300)]
block/backup-top: fix flags handling

backup-top "supports" write-unchanged, by skipping CBW operation in
backup_top_co_pwritev. But it forgets to do the same in
backup_top_co_pwrite_zeroes, as well as declare support for
BDRV_REQ_WRITE_UNCHANGED.

Fix this, and, while being here, declare also support for flags
supported by source child.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200207161231.32707-1-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoblock: always fill entire LUKS header space with zeros
Daniel P. Berrangé [Fri, 7 Feb 2020 13:55:20 +0000 (13:55 +0000)]
block: always fill entire LUKS header space with zeros

When initializing the LUKS header the size with default encryption
parameters will currently be 2068480 bytes. This is rounded up to
a multiple of the cluster size, 2081792, with 64k sectors. If the
end of the header is not the same as the end of the cluster we fill
the extra space with zeros. This was forgetting that not even the
space allocated for the header will be fully initialized, as we
only write key material for the first key slot. The space left
for the other 7 slots is never written to.

An optimization to the ref count checking code:

  commit a5fff8d4b4d928311a5005efa12d0991fe3b66f9 (refs/bisect/bad)
  Author: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
  Date:   Wed Feb 27 16:14:30 2019 +0300

    qcow2-refcount: avoid eating RAM

made the assumption that every cluster which was allocated would
have at least some data written to it. This was violated by way
the LUKS header is only partially written, with much space simply
reserved for future use.

Depending on the cluster size this problem was masked by the
logic which wrote zeros between the end of the LUKS header and
the end of the cluster.

$ qemu-img create --object secret,id=cluster_encrypt0,data=123456 \
   -f qcow2 -o cluster_size=2k,encrypt.iter-time=1,\
               encrypt.format=luks,encrypt.key-secret=cluster_encrypt0 \
               cluster_size_check.qcow2 100M
  Formatting 'cluster_size_check.qcow2', fmt=qcow2 size=104857600
    encrypt.format=luks encrypt.key-secret=cluster_encrypt0
    encrypt.iter-time=1 cluster_size=2048 lazy_refcounts=off refcount_bits=16

$ qemu-img check --object secret,id=cluster_encrypt0,data=redhat \
    'json:{"driver": "qcow2", "encrypt.format": "luks", \
           "encrypt.key-secret": "cluster_encrypt0", \
           "file.driver": "file", "file.filename": "cluster_size_check.qcow2"}'
ERROR: counting reference for region exceeding the end of the file by one cluster or more: offset 0x2000 size 0x1f9000
Leaked cluster 4 refcount=1 reference=0
...snip...
Leaked cluster 130 refcount=1 reference=0

1 errors were found on the image.
Data may be corrupted, or further writes to the image may corrupt it.

127 leaked clusters were found on the image.
This means waste of disk space, but no harm to data.
Image end offset: 268288

The problem only exists when the disk image is entirely empty. Writing
data to the disk image payload will solve the problem by causing the
end of the file to be extended further.

The change fixes it by ensuring that the entire allocated LUKS header
region is fully initialized with zeros. The qemu-img check will still
fail for any pre-existing disk images created prior to this change,
unless at least 1 byte of the payload is written to.

Fully writing zeros to the entire LUKS header is a good idea regardless
as it ensures that space has been allocated on the host filesystem (or
whatever block storage backend is used).

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200207135520.2669430-1-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoqemu-img: Add --target-is-zero to convert
David Edmondson [Wed, 5 Feb 2020 11:02:48 +0000 (11:02 +0000)]
qemu-img: Add --target-is-zero to convert

In many cases the target of a convert operation is a newly provisioned
target that the user knows is blank (reads as zero). In this situation
there is no requirement for qemu-img to wastefully zero out the entire
device.

Add a new option, --target-is-zero, allowing the user to indicate that
an existing target device will return zeros for all reads.

Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Message-Id: <20200205110248.2009589-2-david.edmondson@oracle.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoqapi: Allow getting flat output from 'query-named-block-nodes'
Peter Krempa [Mon, 20 Jan 2020 08:50:49 +0000 (09:50 +0100)]
qapi: Allow getting flat output from 'query-named-block-nodes'

When a management application manages node names there's no reason to
recurse into backing images in the output of query-named-block-nodes.

Add a parameter to the command which will return just the top level
structs.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Message-Id: <4470f8c779abc404dcf65e375db195cd91a80651.1579509782.git.pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[mreitz: Fixed coding style]
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoiotests/147: Fix drive parameters
Max Reitz [Thu, 6 Feb 2020 13:08:12 +0000 (14:08 +0100)]
iotests/147: Fix drive parameters

8dff69b94 added an aio parameter to the drive parameter but forgot to
add a comma before, thus breaking the test.  Fix it again.

Fixes: 8dff69b9415b4287e900358744b732195e1ab2e2
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200206130812.612960-1-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoiotests: Remove the superfluous 2nd check for the availability of quorum
Thomas Huth [Wed, 29 Jan 2020 14:17:51 +0000 (15:17 +0100)]
iotests: Remove the superfluous 2nd check for the availability of quorum

Commit d9df28e7b07 ("iotests: check whitelisted formats") added the
modern @iotests.skip_if_unsupported() to the functions in this test,
so we don't need the old explicit test here anymore.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200129141751.32652-1-thuth@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Tested-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agodocs: qcow2: introduce compression type feature
Vladimir Sementsov-Ogievskiy [Fri, 31 Jan 2020 14:22:19 +0000 (17:22 +0300)]
docs: qcow2: introduce compression type feature

The patch adds a new additional field to the qcow2 header: compression_type,
which specifies compression type. If field is absent or zero, default
compression type is set: ZLIB, which corresponds to current behavior.

New compression type (ZSTD) is to be added in further commit.

Suggested-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200131142219.3264-3-vsementsov@virtuozzo.com>
[mreitz: s/Bits 3-63:  Reserved/Bits 4-63:  Reserved/]
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agodocs: improve qcow2 spec about extending image header
Vladimir Sementsov-Ogievskiy [Fri, 31 Jan 2020 14:22:18 +0000 (17:22 +0300)]
docs: improve qcow2 spec about extending image header

Make it more obvious how to add new fields to the version 3 header and
how to interpret them.

The specification is adjusted so that for new defined optional fields:

1. Software may support some of these optional fields and ignore the
   others, which means that features may be backported to downstream
   Qemu independently.
2. If we want to add incompatible field (or a field, for which some of
   its values would be incompatible), it must be accompanied by
   incompatible feature bit.

Also the concept of "default is zero" is clarified, as it's strange to
say that the value of the field is assumed to be zero for the software
version which don't know about the field at all and don't know how to
treat it be it zero or not.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200131142219.3264-2-vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
[mreitz: s/some its/some of its/]
Signed-off-by: Max Reitz <mreitz@redhat.com>
4 years agoMerge remote-tracking branch 'remotes/rth/tags/pull-pa-20200218' into staging
Peter Maydell [Thu, 20 Feb 2020 14:04:16 +0000 (14:04 +0000)]
Merge remote-tracking branch 'remotes/rth/tags/pull-pa-20200218' into staging

Fixes for Dino and Artist.

# gpg: Signature made Tue 18 Feb 2020 19:35:09 GMT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-pa-20200218:
  hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c
  hw/hppa/dino: Fix bitmask for the PCIROR register
  hw/hppa/dino: Fix reg800_keep_bits overrun (CID 1419387 1419393 1419394)
  hw/hppa/dino: Add comments with register name
  hw/display/artist: Remove dead code (CID 1419388 & 1419389)
  hw/display/artist: Avoid drawing line when nothing to display
  hw/display/artist: Delay some variables initialization
  hw/display/artist: Remove pointless initialization
  hw/display/artist: Move trace event to draw_line()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agolinux-user: Add support for selected alsa timer instructions using ioctls
Filip Bozuta [Wed, 15 Jan 2020 19:36:46 +0000 (20:36 +0100)]
linux-user: Add support for selected alsa timer instructions using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_START - Start selected alsa timer

    Starts the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be started. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

SNDRV_TIMER_IOCTL_STOP - Stop selected alsa timer

    Stops the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be stopped. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

SNDRV_TIMER_IOCTL_CONTINUE - Continue selected alsa timer

    Continues the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be continued. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

SNDRV_TIMER_IOCTL_PAUSE - Pause selected alsa timer

    Pauses the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be paused. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

Implementation notes:

    Since all of the implemented ioctls have NULL as their third argument,
    their implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-13-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Add support for getting/setting selected alsa timer parameters using...
Filip Bozuta [Wed, 15 Jan 2020 19:36:45 +0000 (20:36 +0100)]
linux-user: Add support for getting/setting selected alsa timer parameters using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_INFO - Getting information about selected timer

    Read information about the selected timer. The information is returned in
    the following structure:

    struct snd_timer_info {
        unsigned int flags;         /* timer flags - SNDRV_TIMER_FLG_* */
        int card;                   /* card number */
        unsigned char id[64];       /* timer identificator */
        unsigned char name[80];     /* timer name */
        unsigned long reserved0;    /* reserved for future use */
        unsigned long resolution;   /* average period resolution in ns */
        unsigned char reserved[64]; /* reserved for future use */
    };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT" should be
    called first to select the timer which information is to be obtained. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape") is
    returned.

SNDRV_TIMER_IOCTL_PARAMS - Setting parameters for selected timer

    Sets parameters for the selected timer. The paramaters are set in the
    following structure:

    struct snd_timer_params {
        unsigned int flags;         /* flags - SNDRV_TIMER_PSFLG_* */
        unsigned int ticks;         /* requested resolution in ticks */
        unsigned int queue_size;    /* total size of queue (32-1024) */
        unsigned int reserved0;     /* reserved, was: failure locations */
        unsigned int filter;        /* event filter */
        unsigned char reserved[60]; /* reserved */
    };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT" should be
    called first to select the timer which parameters are to be set. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape") is
    returned.

SNDRV_TIMER_IOCTL_STATUS - Getting status of selected timer

    Read status of the selected timer. The status of the timer is returned in
    the following structure:

    struct snd_timer_status {
        struct timespec tstamp;     /* Timestamp - last update */
        unsigned int resolution;    /* current period resolution in ns */
        unsigned int lost;          /* counter of master tick lost */
        unsigned int overrun;       /* count of read queue overruns */
        unsigned int queue;         /* used queue size */
        unsigned char reserved[64]; /* reserved */
    };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT" should be
    called first to select the timer which status is to be obtained. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape") is
    returned.

Implementation notes:

    All ioctls in this patch have pointer to some kind of a structure
    as their third argument. That is the reason why corresponding
    definitions were added in 'linux-user/syscall_types.h'. Structure
    'snd_timer_status' has field of type 'struct timespec' which is why
    a corresponding definition of that structure was also added in
    'linux-user/syscall_types.h'. All of these strucutures have some
    fields that are of type 'unsigned long'. That is the reason why
    separate target structures were defined in 'linux-user/syscall_defs.h'.
    Structure 'struct timespec' already had a separate target definition
    so that definition was used to define a target structure for
    'snd_timer_status'. The rest of the implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-12-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Add support for selecting alsa timer using ioctl
Filip Bozuta [Wed, 15 Jan 2020 19:36:44 +0000 (20:36 +0100)]
linux-user: Add support for selecting alsa timer using ioctl

This patch implements functionality of following ioctl:

SNDRV_TIMER_IOCTL_SELECT - Selecting timer

    Selects the timer which id is specified. The timer id is specified in the
    following strcuture:

    struct snd_timer_select {
        struct snd_timer_id id;         /* timer ID */
        unsigned char reserved[32];     /* reserved */
    };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling the ioctl, the field "tid" should be initialized with the id
    information for the timer which is to be selected. If there is no timer
    device with the specified id, the error ENODEV ("No such device") is
    returned.

Implementation notes:

    Ioctl implemented in this patch has a pointer to a
    'struct snd_timer_select' as its third argument.
    That is the reason why a corresponding definition
    was added in 'linux-user/syscall_types.h'. The rest
    of the implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-11-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Add support for getting/setting specified alsa timer parameters using...
Filip Bozuta [Wed, 15 Jan 2020 19:36:43 +0000 (20:36 +0100)]
linux-user: Add support for getting/setting specified alsa timer parameters using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_GINFO - Getting information about specified timer

    Read information about the specified timer. The information about the
    timer is returned in the following structure:

        struct snd_timer_ginfo {
            struct snd_timer_id tid;      /* requested timer ID */
            unsigned int flags;           /* timer flags - SNDRV_TIMER_FLG_* */
            int card;                     /* card number */
            unsigned char id[64];         /* timer identification */
            unsigned char name[80];       /* timer name */
            unsigned long reserved0;      /* reserved for future use */
            unsigned long resolution;     /* average period resolution in ns */
            unsigned long resolution_min; /* minimal period resolution in ns */
            unsigned long resolution_max; /* maximal period resolution in ns */
            unsigned int clients;         /* active timer clients */
            unsigned char reserved[32];   /* reserved */
        };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling the ioctl, the field "tid" should be initialized with the id
    information for the timer which information is to be obtained. After the
    ioctl call, the rest of the structure fields are filled with values from
    the timer device with the specified id. If there is no device with the
    specified id, the error ENODEV ("No such device") is returned.

SNDRV_TIMER_IOCTL_GPARAMS - Setting precise period duration

    Sets timer precise period duration numerator and denominator in seconds. The
    period duration is set in the following structure:

        struct snd_timer_gparams {
            struct snd_timer_id tid;    /* requested timer ID */
            unsigned long period_num;   /* period duration - numerator */
            unsigned long period_den;   /* period duration - denominator */
            unsigned char reserved[32]; /* reserved */
        };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling the ioctl, the field "tid" should be initialized with the id
    information for the timer which period duration is to be set. Also, the
    fileds "period_num" and "period_den" should be filled with the period
    duration numerator and denominator values that are to be set respectively.
    If there is no device with the specified id, the error ENODEV ("No such
    device") is returned.

SNDRV_TIMER_IOCTL_GSTATUS - Getting current period resolution

    Read timer current period resolution in nanoseconds and period resolution
    numerator and denominator in seconds. The period resolution information is
    returned in the following structure:

    struct snd_timer_gstatus {
        struct snd_timer_id tid;        /* requested timer ID */
        unsigned long resolution;       /* current period resolution in ns */
        unsigned long resolution_num;   /* period resolution - numerator */
        unsigned long resolution_den;   /* period resolution - denominator */
        unsigned char reserved[32];     /* reserved for future use */
    };

    A pointer to this structure should be passed as the third ioctl's argument.
    Before calling the ioctl, the field "tid" should be initialized with the id
    information for the timer which period resolution is to be obtained. After
    the ioctl call, the rest of the structure fields are filled with values
    from the timer device with the specified id. If there is no device with the
    specified id, the error ENODEV ("No such device") is returned.

Implementation notes:

    All ioctls in this patch have pointer to some kind of a structure as their
    third argument. That is the reason why corresponding definitions were added
    in 'linux-user/syscall_types.h'. All of these strcutures have some fields
    that are of type 'unsigned long'. That is the reason why separate target
    structures were defined in 'linux-user/syscall_defs.h'. Also, all of the
    structures have a field with type 'struct snd_timer_id' which is the reason
    why a separate target structure 'struct target_snd_timer_id' was also
    defined. The rest of the implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-10-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Add support for getting alsa timer version and id
Filip Bozuta [Wed, 15 Jan 2020 19:36:41 +0000 (20:36 +0100)]
linux-user: Add support for getting alsa timer version and id

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_PVERSION - Getting the sound timer version

    Read the sound timer version. The third ioctl's argument is
    a pointer to an int in which the specified timers version
    is returned.

SNDRV_TIMER_IOCTL_NEXT_DEVICE - Getting id information about next timer

    Read id information about the next timer device from the sound timer
    device list. The id infomration is returned in the following structure:

        struct snd_timer_id {
            int dev_class;    /* timer device class number */
            int dev_sclass;   /* slave device class number (unused) */
            int card;         /* card number */
            int device;       /* device number */
            int subdevice;    /* sub-device number */
        };

    The devices in the sound timer device list are arranged by the fields
    of this structure respectively (first by dev_class number, then by
    card number, ...). A pointer to this structure should be passed as
    the third ioctl's argument. Before calling the ioctl, the parameters
    of this structure should be initialized in relation to the next timer
    device which information is to be obtained. For example, if a wanted
    timer device has the device class number equal to or bigger then 2,
    the field dev_class should be initialized to 2. After the ioctl call,
    the structure fields are filled with values from the next device in
    the sound timer device list. If there is no next device in the list,
    the structure is filled with "zero" id values (in that case all
    fields are filled with value -1).

Implementation notes:

    The ioctl 'SNDRV_TIMER_IOCTL_NEXT_DEVICE' has a pointer to a
    'struct snd_timer_id' as its third argument. That is the reason why
    corresponding definition is added in 'linux-user/syscall_types.h'.
    Since all elements of this structure are of type 'int', the rest of
    the implementation was straightforward.

    The line '#include <linux/rtc.h>' was added to recognize
    preprocessor definitions for these ioctls. This needs to be
    done only once in this series of commits. Also, the content
    of this file (with respect to ioctl definitions) remained
    unchanged for a long time, therefore there is no need to
    worry about supporting older Linux kernel version.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-8-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: remove gemu_log from the linux-user tree
Josh Kunz [Tue, 4 Feb 2020 02:54:15 +0000 (18:54 -0800)]
linux-user: remove gemu_log from the linux-user tree

Now that all uses have been migrated to `qemu_log' it is no longer
needed.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Josh Kunz <jkz@google.com>
Message-Id: <20200204025416.111409-4-jkz@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Use `qemu_log' for strace
Josh Kunz [Tue, 4 Feb 2020 02:54:14 +0000 (18:54 -0800)]
linux-user: Use `qemu_log' for strace

This change switches linux-user strace logging to use the newer `qemu_log`
logging subsystem rather than the older `gemu_log` (notice the "g")
logger. `qemu_log` has several advantages, namely that it allows logging
to a file, and provides a more unified interface for configuration
of logging (via the QEMU_LOG environment variable or options).

This change introduces a new log mask: `LOG_STRACE` which is used for
logging of user-mode strace messages.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Josh Kunz <jkz@google.com>
Message-Id: <20200204025416.111409-3-jkz@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Use `qemu_log' for non-strace logging
Josh Kunz [Tue, 4 Feb 2020 02:54:13 +0000 (18:54 -0800)]
linux-user: Use `qemu_log' for non-strace logging

Since most calls to `gemu_log` are actually logging unimplemented features,
this change replaces most non-strace calls to `gemu_log` with calls to
`qemu_log_mask(LOG_UNIMP, ...)`.  This allows the user to easily log to
a file, and to mask out these log messages if they desire.

Note: This change is slightly backwards incompatible, since now these
"unimplemented" log messages will not be logged by default.

Signed-off-by: Josh Kunz <jkz@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200204025416.111409-2-jkz@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agoconfigure: Avoid compiling system tools on user build by default
Philippe Mathieu-Daudé [Mon, 17 Feb 2020 13:33:27 +0000 (14:33 +0100)]
configure: Avoid compiling system tools on user build by default

User-mode does not need the system tools. Do not build them by
default if the user specifies --disable-system.

This disables building the following binaries on a user-only build:

- elf2dmp
- qemu-edid
- qemu-ga
- qemu-img
- qemu-io
- qemu-nbd
- ivshmem-client
- ivshmem-server

The qemu-user binaries are not affected by this change.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200217133327.25144-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user/strace: Improve output of various syscalls
Helge Deller [Thu, 21 Nov 2019 19:33:51 +0000 (20:33 +0100)]
linux-user/strace: Improve output of various syscalls

Improve strace output of various syscalls which either have none
or only int-type parameters.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191121193351.GA31821@ls3530.fritz.box>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agoconfigure: linux-user doesn't need neither fdt nor slirp
Laurent Vivier [Fri, 21 Jun 2019 13:05:44 +0000 (15:05 +0200)]
configure: linux-user doesn't need neither fdt nor slirp

if softmmu is not enabled, we disable by default fdt and
slirp as they are only used by -softmmu targets.

A side effect is the git submodules are not cloned
if they are not needed.

Clone and build can be forced with --enable-fdt and
--enable-slirp.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190621130544.18860-1-lvivier@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: implement getsockopt SO_RCVTIMEO and SO_SNDTIMEO
Andreas Schwab [Mon, 13 May 2019 09:06:26 +0000 (11:06 +0200)]
linux-user: implement getsockopt SO_RCVTIMEO and SO_SNDTIMEO

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvmlfzaoh9p.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agolinux-user: Implement membarrier syscall
Andreas Schwab [Mon, 13 May 2019 09:02:53 +0000 (11:02 +0200)]
linux-user: Implement membarrier syscall

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvmpnomohfm.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agohw/xtensa/xtfpga:fix leak of fdevice tree blob
Chen Qun [Tue, 18 Feb 2020 09:11:54 +0000 (17:11 +0800)]
hw/xtensa/xtfpga:fix leak of fdevice tree blob

The device tree blob returned by load_device_tree is malloced.
We should free it after cpu_physical_memory_write().

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200218091154.21696-4-kuhn.chenqun@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agohw/nios2:fix leak of fdevice tree blob
Chen Qun [Tue, 18 Feb 2020 09:11:52 +0000 (17:11 +0800)]
hw/nios2:fix leak of fdevice tree blob

The device tree blob returned by load_device_tree is malloced.
We should free it after cpu_physical_memory_write().

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200218091154.21696-2-kuhn.chenqun@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agohw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c
Philippe Mathieu-Daudé [Tue, 18 Feb 2020 06:33:55 +0000 (07:33 +0100)]
hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c

Register 0x818 is documented as 'undefined', and register
0x82c is not documented. Refuse their access.

Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200218063355.18577-5-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/hppa/dino: Fix bitmask for the PCIROR register
Philippe Mathieu-Daudé [Tue, 18 Feb 2020 06:33:54 +0000 (07:33 +0100)]
hw/hppa/dino: Fix bitmask for the PCIROR register

Only 24 bits of the PCIROR register are documented
(see pp. 37 of datasheet referenced in this file header).

Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200218063355.18577-4-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/hppa/dino: Fix reg800_keep_bits overrun (CID 1419387 1419393 1419394)
Philippe Mathieu-Daudé [Tue, 18 Feb 2020 06:33:53 +0000 (07:33 +0100)]
hw/hppa/dino: Fix reg800_keep_bits overrun (CID 1419387 1419393 1419394)

Coverity reports:

  *** CID 1419387:  Memory - illegal accesses  (OVERRUN)
  /hw/hppa/dino.c: 267 in dino_chip_read_with_attrs()
  261             val = s->ilr & s->imr & s->icr;
  262             break;
  263         case DINO_TOC_ADDR:
  264             val = s->toc_addr;
  265             break;
  266         case DINO_GMASK ... DINO_TLTIM:
  >>>     CID 1419387:  Memory - illegal accesses  (OVERRUN)
  >>>     Overrunning array "s->reg800" of 12 4-byte elements at element index 12 (byte offset 48) using index "(addr - 2048UL) / 4UL" (which evaluates to 12).
  267             val = s->reg800[(addr - DINO_GMASK) / 4];
  268             if (addr == DINO_PAMR) {
  269                 val &= ~0x01;  /* LSB is hardwired to 0 */
  270             }
  271             if (addr == DINO_MLTIM) {
  272                 val &= ~0x07;  /* 3 LSB are hardwired to 0 */

  *** CID 1419393:  Memory - corruptions  (OVERRUN)
  /hw/hppa/dino.c: 363 in dino_chip_write_with_attrs()
  357             /* These registers are read-only.  */
  358             break;
  359
  360         case DINO_GMASK ... DINO_TLTIM:
  361             i = (addr - DINO_GMASK) / 4;
  362             val &= reg800_keep_bits[i];
  >>>     CID 1419393:  Memory - corruptions  (OVERRUN)
  >>>     Overrunning array "s->reg800" of 12 4-byte elements at element index 12 (byte offset 48) using index "i" (which evaluates to 12).
  363             s->reg800[i] = val;
  364             break;
  365
  366         default:
  367             /* Controlled by dino_chip_mem_valid above.  */
  368             g_assert_not_reached();

  *** CID 1419394:  Memory - illegal accesses  (OVERRUN)
  /hw/hppa/dino.c: 362 in dino_chip_write_with_attrs()
  356         case DINO_IRR1:
  357             /* These registers are read-only.  */
  358             break;
  359
  360         case DINO_GMASK ... DINO_TLTIM:
  361             i = (addr - DINO_GMASK) / 4;
  >>>     CID 1419394:  Memory - illegal accesses  (OVERRUN)
  >>>     Overrunning array "reg800_keep_bits" of 12 4-byte elements at element index 12 (byte offset 48) using index "i" (which evaluates to 12).
  362             val &= reg800_keep_bits[i];
  363             s->reg800[i] = val;
  364             break;
  365
  366         default:
  367             /* Controlled by dino_chip_mem_valid above.  */

Indeed the array should contain 13 entries, the undocumented
register 0x82c is missing. Fix by increasing the array size
and adding the missing register.

CID 1419387 can be verified with:

  $ echo x 0xfff80830 | hppa-softmmu/qemu-system-hppa -S -monitor stdio -display none
  QEMU 4.2.50 monitor - type 'help' for more information
  (qemu) x 0xfff80830
  qemu/hw/hppa/dino.c:267:15: runtime error: index 12 out of bounds for type 'uint32_t [12]'
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/phil/source/qemu/hw/hppa/dino.c:267:15 in
  00000000fff80830: 0x00000000

and CID 1419393/1419394 with:

  $ echo writeb 0xfff80830 0x69 \
    | hppa-softmmu/qemu-system-hppa -S -accel qtest -qtest stdio -display none
  [I 1581634452.654113] OPENED
  [R +4.105415] writeb 0xfff80830 0x69
  qemu/hw/hppa/dino.c:362:16: runtime error: index 12 out of bounds for type 'const uint32_t [12]'
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior qemu/hw/hppa/dino.c:362:16 in
  =================================================================
  ==29607==ERROR: AddressSanitizer: global-buffer-overflow on address 0x5577dae32f30 at pc 0x5577d93f2463 bp 0x7ffd97ea11b0 sp 0x7ffd97ea11a8
  READ of size 4 at 0x5577dae32f30 thread T0
      #0 0x5577d93f2462 in dino_chip_write_with_attrs qemu/hw/hppa/dino.c:362:16
      #1 0x5577d9025664 in memory_region_write_with_attrs_accessor qemu/memory.c:503:12
      #2 0x5577d9024920 in access_with_adjusted_size qemu/memory.c:539:18
      #3 0x5577d9023608 in memory_region_dispatch_write qemu/memory.c:1482:13
      #4 0x5577d8e3177a in flatview_write_continue qemu/exec.c:3166:23
      #5 0x5577d8e20357 in flatview_write qemu/exec.c:3206:14
      #6 0x5577d8e1fef4 in address_space_write qemu/exec.c:3296:18
      #7 0x5577d8e20693 in address_space_rw qemu/exec.c:3306:16
      #8 0x5577d9011595 in qtest_process_command qemu/qtest.c:432:13
      #9 0x5577d900d19f in qtest_process_inbuf qemu/qtest.c:705:9
      #10 0x5577d900ca22 in qtest_read qemu/qtest.c:717:5
      #11 0x5577da8c4254 in qemu_chr_be_write_impl qemu/chardev/char.c:183:9
      #12 0x5577da8c430c in qemu_chr_be_write qemu/chardev/char.c:195:9
      #13 0x5577da8cf587 in fd_chr_read qemu/chardev/char-fd.c:68:9
      #14 0x5577da9836cd in qio_channel_fd_source_dispatch qemu/io/channel-watch.c:84:12
      #15 0x7faf44509ecc in g_main_context_dispatch (/lib64/libglib-2.0.so.0+0x4fecc)
      #16 0x5577dab75f96 in glib_pollfds_poll qemu/util/main-loop.c:219:9
      #17 0x5577dab74797 in os_host_main_loop_wait qemu/util/main-loop.c:242:5
      #18 0x5577dab7435a in main_loop_wait qemu/util/main-loop.c:518:11
      #19 0x5577d9514eb3 in main_loop qemu/vl.c:1682:9
      #20 0x5577d950699d in main qemu/vl.c:4450:5
      #21 0x7faf41a87f42 in __libc_start_main (/lib64/libc.so.6+0x23f42)
      #22 0x5577d8cd4d4d in _start (qemu/build/sanitizer/hppa-softmmu/qemu-system-hppa+0x1256d4d)

  0x5577dae32f30 is located 0 bytes to the right of global variable 'reg800_keep_bits' defined in 'qemu/hw/hppa/dino.c:87:23' (0x5577dae32f00) of size 48
  SUMMARY: AddressSanitizer: global-buffer-overflow qemu/hw/hppa/dino.c:362:16 in dino_chip_write_with_attrs
  Shadow bytes around the buggy address:
    0x0aaf7b5be590: 00 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9
    0x0aaf7b5be5a0: 07 f9 f9 f9 f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9
    0x0aaf7b5be5b0: 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
    0x0aaf7b5be5c0: 00 00 00 02 f9 f9 f9 f9 00 00 00 00 00 00 00 00
    0x0aaf7b5be5d0: 00 00 00 00 00 00 00 00 00 00 00 03 f9 f9 f9 f9
  =>0x0aaf7b5be5e0: 00 00 00 00 00 00[f9]f9 f9 f9 f9 f9 00 00 00 00
    0x0aaf7b5be5f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x0aaf7b5be600: 00 00 01 f9 f9 f9 f9 f9 00 00 00 00 07 f9 f9 f9
    0x0aaf7b5be610: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
    0x0aaf7b5be620: 00 00 00 05 f9 f9 f9 f9 00 00 00 00 07 f9 f9 f9
    0x0aaf7b5be630: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 07 f9 f9 f9
  Shadow byte legend (one shadow byte represents 8 application bytes):
    Addressable:           00
    Partially addressable: 01 02 03 04 05 06 07
    Heap left redzone:       fa
    Freed heap region:       fd
    Stack left redzone:      f1
    Stack mid redzone:       f2
    Stack right redzone:     f3
    Stack after return:      f5
    Stack use after scope:   f8
    Global redzone:          f9
    Global init order:       f6
    Poisoned by user:        f7
    Container overflow:      fc
    Array cookie:            ac
    Intra object redzone:    bb
    ASan internal:           fe
    Left alloca redzone:     ca
    Right alloca redzone:    cb
    Shadow gap:              cc
  ==29607==ABORTING

Fixes: Covertiy CID 1419387 / 1419393 / 1419394 (commit 18092598a5)
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200218063355.18577-3-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/hppa/dino: Add comments with register name
Philippe Mathieu-Daudé [Tue, 18 Feb 2020 06:33:52 +0000 (07:33 +0100)]
hw/hppa/dino: Add comments with register name

Add a comment with the name of each register in the 0x800-0x8ff range.

Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200218063355.18577-2-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/display/artist: Remove dead code (CID 1419388 & 1419389)
Philippe Mathieu-Daudé [Fri, 14 Feb 2020 00:13:02 +0000 (01:13 +0100)]
hw/display/artist: Remove dead code (CID 1419388 & 1419389)

Coverity reports:

  *** CID 1419388:  Control flow issues  (DEADCODE)
  /hw/display/artist.c: 739 in draw_line_xy()
  733         if (endy < 0) {
  734             endy = 0;
  735         }
  736
  737
  738         if (endx < 0) {
  >>>     CID 1419388:  Control flow issues  (DEADCODE)
  >>>     Execution cannot reach this statement: "return;".
  739             return;
  740         }
  741
  742         if (endy < 0) {
  743             return;
  744         }

  *** CID 1419389:  Control flow issues  (DEADCODE)
  /hw/display/artist.c: 743 in draw_line_xy()
  737
  738         if (endx < 0) {
  739             return;
  740         }
  741
  742         if (endy < 0) {
  >>>     CID 1419389:  Control flow issues  (DEADCODE)
  >>>     Execution cannot reach this statement: "return;".
  743             return;
  744         }
  745
  746         trace_artist_draw_line(startx, starty, endx, endy);
  747         draw_line(s, startx, starty, endx, endy, false, -1, -1);
  748     }

Fixes: Covertiy CID 1419388 and 1419389 (commit 4765384ce33)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Sven Schnelle <svens@stackframe.org>
Message-Id: <20200214001303.12873-6-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/display/artist: Avoid drawing line when nothing to display
Philippe Mathieu-Daudé [Fri, 14 Feb 2020 00:13:01 +0000 (01:13 +0100)]
hw/display/artist: Avoid drawing line when nothing to display

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200214001303.12873-5-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/display/artist: Delay some variables initialization
Philippe Mathieu-Daudé [Fri, 14 Feb 2020 00:13:00 +0000 (01:13 +0100)]
hw/display/artist: Delay some variables initialization

We want to have an early exit path. Delay some initializations
before the variables are used.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Sven Schnelle <svens@stackframe.org>
Message-Id: <20200214001303.12873-4-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/display/artist: Remove pointless initialization
Philippe Mathieu-Daudé [Fri, 14 Feb 2020 00:12:59 +0000 (01:12 +0100)]
hw/display/artist: Remove pointless initialization

We are initializating incy inconditionally:

    if (y1 <= y2) {
        incy = 1;
    } else {
        incy = -1;
    }

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Sven Schnelle <svens@stackframe.org>
Message-Id: <20200214001303.12873-3-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/display/artist: Move trace event to draw_line()
Philippe Mathieu-Daudé [Fri, 14 Feb 2020 00:12:58 +0000 (01:12 +0100)]
hw/display/artist: Move trace event to draw_line()

Instead of emitting the trace event before each call to
draw_line(), call it once at draw_line() entrance.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Sven Schnelle <svens@stackframe.org>
Message-Id: <20200214001303.12873-2-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agohw/net/rocker: Report unimplemented feature with qemu_log_mask(UNIMP)
Philippe Mathieu-Daudé [Mon, 17 Feb 2020 10:16:37 +0000 (11:16 +0100)]
hw/net/rocker: Report unimplemented feature with qemu_log_mask(UNIMP)

Fix warnings reported by Clang static code analyzer:

    CC      hw/net/rocker/rocker.o
  hw/net/rocker/rocker.c:213:9: warning: Value stored to 'tx_tso_mss' is never read
          tx_tso_mss = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_TSO_MSS]);
          ^            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  hw/net/rocker/rocker.c:217:9: warning: Value stored to 'tx_tso_hdr_len' is never read
          tx_tso_hdr_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]);
          ^                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  hw/net/rocker/rocker.c:255:9: warning: Value stored to 'tx_l3_csum_off' is never read
          tx_l3_csum_off += tx_tso_mss = tx_tso_hdr_len = 0;
          ^                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: dc488f888
Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200217101637.27558-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agohw/block/pflash_cfi02: Remove unneeded variable assignment
Philippe Mathieu-Daudé [Sat, 15 Feb 2020 16:15:57 +0000 (17:15 +0100)]
hw/block/pflash_cfi02: Remove unneeded variable assignment

Fix warning reported by Clang static code analyzer:

    CC      hw/block/pflash_cfi02.o
  hw/block/pflash_cfi02.c:311:5: warning: Value stored to 'ret' is never read
      ret = -1;
      ^     ~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200215161557.4077-4-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
4 years agohw/display/qxl: Remove unneeded variable assignment
Philippe Mathieu-Daudé [Sat, 15 Feb 2020 16:15:56 +0000 (17:15 +0100)]
hw/display/qxl: Remove unneeded variable assignment

Fix warning reported by Clang static code analyzer:

  hw/display/qxl.c:1634:14: warning: Value stored to 'orig_io_port' during its initialization is never read
      uint32_t orig_io_port = io_port;
               ^~~~~~~~~~~~   ~~~~~~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200215161557.4077-3-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>