OSDN Git Service

qmiga/qemu.git
5 years agocpus: protect TimerState writes with a spinlock
Paolo Bonzini [Tue, 14 Aug 2018 07:57:16 +0000 (09:57 +0200)]
cpus: protect TimerState writes with a spinlock

In the next patch, we will need to write cpu_ticks_offset from any
thread, even outside the BQL.  Currently, it is protected by the BQL
just because cpu_enable_ticks and cpu_disable_ticks happen to hold it,
but the critical sections are well delimited and it's easy to remove
the BQL dependency.

Add a spinlock that matches vm_clock_seqlock, and hold it when writing
to the TimerState.  This also lets us fix cpu_update_icount when 64-bit
atomics are not available.

Fields of TiemrState are reordered to avoid padding.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoseqlock: add QemuLockable support
Paolo Bonzini [Tue, 14 Aug 2018 07:48:29 +0000 (09:48 +0200)]
seqlock: add QemuLockable support

A shortcut when the seqlock write is protected by a spinlock or any mutex
other than the BQL.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agocpus: protect all icount computation with seqlock
Paolo Bonzini [Tue, 14 Aug 2018 07:31:58 +0000 (09:31 +0200)]
cpus: protect all icount computation with seqlock

Move the icount->ns computation to cpu_get_icount, and make
cpu_get_icount_locked return the raw value.  This makes the
atomic_read__nocheck safe, because it now happens always inside a
seqlock and any torn reads will be retried.  qemu_icount_bias and
icount_time_shift also need to be accessed with atomics.  At the
same time, however, you don't need atomic_read within the writer,
because no concurrent writes are possible.

The fix to vmstate lets us keep the struct nicely packed.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agomodule: Use QEMU_MODULE_DIR as a search path
ryang [Wed, 4 Jul 2018 18:10:10 +0000 (14:10 -0400)]
module: Use QEMU_MODULE_DIR as a search path

The current paths for modules are CONFIG_QEMU_MODDIR and paths relative
to the executable. Qemu and its modules can be installed and executed in
paths that are different from these search paths. This change allows
a search path to be specified by environment variable.

An example usage for this is postmarketOS[1]. This is a build environment
for Alpine Linux. It sets up Alpine Linux in a chroot environment.
Alpine's Qemu packages are installed in the chroot. The Alpine Linux Qemu
package is used to test compiled Alpine Linux system images. This way there
isn't a reliance on the which ever version of Qemu the host system / distro
provides.

postmarketOS executes Qemu on host system outside of the chroot
The Qemu module search path needs to point to the location of the
chroot relative to the host system.

e.g.
The root of the Alpine Linux chroot is:
~/.local/var/pmbootstrap/chroot_native/

Alpine's Qemu is installed at
~/.local/var/pmbootstrap/chroot_native/usr/bin/

The Qemu module search path needs to be:
QEMU_MODULE_DIR=~/.local/var/pmbootstrap/chroot_native/usr/lib/qemu/

[1] https://postmarketos.org/

Signed-off-by: ryang <decatf@gmail.com>
Message-Id: <20180704181010.GA918@computer>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqemu-guest-agent: freeze-hook to ignore dpkg files as well
Christian Ehrhardt [Wed, 13 Dec 2017 10:17:52 +0000 (11:17 +0100)]
qemu-guest-agent: freeze-hook to ignore dpkg files as well

The hook already skips a set of rpm upgrade artifacts.
Do the same with such files that might be created by dpkg.

Fixes: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1484990

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Message-Id: <1513160272-15921-1-git-send-email-christian.ehrhardt@canonical.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agohw/intc/apic: Switch away from old_mmio
Peter Maydell [Fri, 3 Aug 2018 10:19:43 +0000 (11:19 +0100)]
hw/intc/apic: Switch away from old_mmio

Switch the apic away from using the old_mmio MemoryRegionOps
accessor functions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180803101943.23722-1-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqom: convert the CPU list to RCU
Emilio G. Cota [Sun, 19 Aug 2018 09:13:35 +0000 (05:13 -0400)]
qom: convert the CPU list to RCU

Iterating over the list without using atomics is undefined behaviour,
since the list can be modified concurrently by other threads (e.g.
every time a new thread is created in user-mode).

Fix it by implementing the CPU list as an RCU QTAILQ. This requires
a little bit of extra work to traverse list in reverse order (see
previous patch), but other than that the conversion is trivial.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-12-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agospapr: do not use CPU_FOREACH_REVERSE
Emilio G. Cota [Sun, 19 Aug 2018 09:13:34 +0000 (05:13 -0400)]
spapr: do not use CPU_FOREACH_REVERSE

This paves the way for implementing the CPU list with an RCU list,
which cannot be traversed in reverse order.

Note that this is the only caller of CPU_FOREACH_REVERSE.

Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-11-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests: add test-rcu-tailq
Emilio G. Cota [Sun, 19 Aug 2018 09:13:33 +0000 (05:13 -0400)]
tests: add test-rcu-tailq

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-10-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests: add test-list-simpleq
Emilio G. Cota [Sun, 19 Aug 2018 09:13:32 +0000 (05:13 -0400)]
tests: add test-list-simpleq

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-9-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotest-rcu-list: abstract the list implementation
Emilio G. Cota [Sun, 19 Aug 2018 09:13:31 +0000 (05:13 -0400)]
test-rcu-list: abstract the list implementation

So that we can test other implementations.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-8-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotest-rcu-list: access goflag with atomics
Emilio G. Cota [Sun, 19 Aug 2018 09:13:29 +0000 (05:13 -0400)]
test-rcu-list: access goflag with atomics

Instead of declaring it volatile.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-6-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agorcu_queue: add RCU QTAILQ
Emilio G. Cota [Sun, 19 Aug 2018 09:13:28 +0000 (05:13 -0400)]
rcu_queue: add RCU QTAILQ

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-5-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agorcu_queue: add RCU QSIMPLEQ
Emilio G. Cota [Sun, 19 Aug 2018 09:13:27 +0000 (05:13 -0400)]
rcu_queue: add RCU QSIMPLEQ

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-4-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agorcu_queue: remove barrier from QLIST_EMPTY_RCU
Emilio G. Cota [Sun, 19 Aug 2018 09:13:26 +0000 (05:13 -0400)]
rcu_queue: remove barrier from QLIST_EMPTY_RCU

It's unnecessary because the pointer isn't dereferenced.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-3-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agorcu_queue: use atomic_set in QLIST_REMOVE_RCU
Emilio G. Cota [Sun, 19 Aug 2018 09:13:25 +0000 (05:13 -0400)]
rcu_queue: use atomic_set in QLIST_REMOVE_RCU

To avoid undefined behaviour.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-2-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotarget-i386: fix segment limit check in ljmp
Andrew Oates [Thu, 16 Aug 2018 01:19:03 +0000 (21:19 -0400)]
target-i386: fix segment limit check in ljmp

The current implementation has three bugs,
 * segment limits are not enforced in protected mode if the L bit is set
   in the target segment descriptor
 * segment limits are not enforced in compatibility mode (ljmp to 32-bit
   code segment in long mode)
 * #GP(new_cs) is generated rather than #GP(0)

Now the segment limits are enforced if we're not in long mode OR the
target code segment doesn't have the L bit set.

Signed-off-by: Andrew Oates <aoates@google.com>
Message-Id: <20180816011903.39816-1-andrew@andrewoates.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotarget-i386: Fix lcall/ljmp to call gate in IA-32e mode
Andrew Oates [Sun, 19 Aug 2018 18:17:25 +0000 (14:17 -0400)]
target-i386: Fix lcall/ljmp to call gate in IA-32e mode

Currently call gates are always treated as 32-bit gates.  In IA-32e mode
(either compatibility or 64-bit submode), system segment descriptors are
always 64-bit.  Treating them as 32-bit has the expected unfortunate
effect: only the lower 32 bits of the offset are loaded, the stack
pointer is truncated, a bad new stack pointer is loaded from the TSS (if
switching privilege levels), etc.

This change adds support for 64-bit call gate to the lcall and ljmp
instructions.  Additionally, there should be a check for non-canonical
stack pointers, but I've omitted that since there doesn't seem to be
checks for non-canonical addresses in this code elsewhere.

I've left the raise_exception_err_ra lines unwapped at 80 columns to
match the style in the rest of the file.

Signed-off-by: Andrew Oates <aoates@google.com>
Message-Id: <20180819181725.34098-1-andrew@andrewoates.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agobuild-sys: remove glib_subprocess check
Marc-André Lureau [Mon, 30 Jul 2018 15:36:39 +0000 (17:36 +0200)]
build-sys: remove glib_subprocess check

The check should be unnecessary since commit
e7b3af81597db1a6b55f2c15d030d703c6b2c6ac "glib: bump min required glib
library version to 2.40".

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180730153639.26466-1-marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agokvm: add call to qemu_add_opts() for -overcommit option
Prasad Singamsetty [Wed, 15 Aug 2018 17:57:04 +0000 (13:57 -0400)]
kvm: add call to qemu_add_opts() for -overcommit option

qemu command fails to process -overcommit option. Add the missing
call to qemu_add_opts() in vl.c.

Signed-off-by: Prasad Singamsetty <prasad.singamsetty@oracle.com>
Message-Id: <20180815175704.105902-1-prasad.singamsetty@oracle.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agolsi_scsi: add support for PPR Extended Message
George Kennedy [Fri, 17 Aug 2018 17:25:48 +0000 (19:25 +0200)]
lsi_scsi: add support for PPR Extended Message

The LSI 53c895a code does not handle the PPR Extended Message. Add
support to handle PPR Extended Message like SDTR and WDTR are handled.
That is, to skip past the message bytes and ignore the message.

Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoi386: Fix arch_query_cpu_model_expansion() leak
Eduardo Habkost [Thu, 16 Aug 2018 18:35:09 +0000 (15:35 -0300)]
i386: Fix arch_query_cpu_model_expansion() leak

Reported by Coverity:

Error: RESOURCE_LEAK (CWE-772): [#def439]
qemu-2.12.0/target/i386/cpu.c:3179: alloc_fn: Storage is returned from allocation function "qdict_new".
qemu-2.12.0/qobject/qdict.c:34:5: alloc_fn: Storage is returned from allocation function "g_malloc0".
qemu-2.12.0/qobject/qdict.c:34:5: var_assign: Assigning: "qdict" = "g_malloc0(4120UL)".
qemu-2.12.0/qobject/qdict.c:37:5: return_alloc: Returning allocated memory "qdict".
qemu-2.12.0/target/i386/cpu.c:3179: var_assign: Assigning: "props" = storage returned from "qdict_new()".
qemu-2.12.0/target/i386/cpu.c:3217: leaked_storage: Variable "props" going out of scope leaks the storage it points to.

This was introduced by commit b8097deb359b ("i386: Improve
query-cpu-model-expansion full mode").

The leak is only theoretical: if ret->model->props is set to
props, the qapi_free_CpuModelExpansionInfo() call will free props
too in case of errors.  The only way for this to not happen is if
we enter the default branch of the switch statement, which would
never happen because all CpuModelExpansionType values are being
handled.

It's still worth to change this to make the allocation logic
easier to follow and make the Coverity error go away.  To make
everything simpler, initialize ret->model and ret->model->props
earlier in the function.

While at it, remove redundant check for !prop because prop is
always initialized at the beginning of the function.

Fixes: b8097deb359bbbd92592b9670adfe9e245b2d0bd
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20180816183509.8231-1-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agofw_cfg: import & use linux/qemu_fw_cfg.h
Marc-André Lureau [Fri, 17 Aug 2018 15:59:10 +0000 (17:59 +0200)]
fw_cfg: import & use linux/qemu_fw_cfg.h

Use kernel common header for fw_cfg.

(unfortunately, optionrom.h must have its own define, since it's
actually an assembler header)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180817155910.5722-2-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
5 years agoupdate-linux-headers.sh: add qemu_fw_cfg.h
Marc-André Lureau [Fri, 17 Aug 2018 15:59:09 +0000 (17:59 +0200)]
update-linux-headers.sh: add qemu_fw_cfg.h

The fw_cfg header was added during 4.17 cycle.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180817155910.5722-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
5 years agocheckpatch: allow space in more places before a bracket
Heinrich Schuchardt [Tue, 10 Apr 2018 23:34:14 +0000 (16:34 -0700)]
checkpatch: allow space in more places before a bracket

Allow a space between a colon and subsequent opening bracket.  This
sequence may occur in inline assembler statements like

asm(
"ldr %[out], [%[in]]\n\t"
: [out] "=r" (ret)
: [in] "r" (addr)
);

Allow a space between a comma and subsequent opening bracket.  This
sequence may occur in designated initializers.

To ease backporting the patch, I am also changing the comma-bracket
detection (added in QEMU by commit 409db6eb7199af7a2f09f746bd1b793e9daefe5f)
to use the same regex as brackets and colons (as done independently
by Linux commit daebc534ac15f991961a5bb433e515988220e9bf).

Link: http://lkml.kernel.org/r/20180403191655.23700-1-xypron.glpk@gmx.de
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agohmp-commands-info: add sync-profile
Emilio G. Cota [Tue, 8 Aug 2017 17:54:42 +0000 (13:54 -0400)]
hmp-commands-info: add sync-profile

The command introduced here is just for developers. This means that:

- the info displayed and the output format could change in the future
- the command is only meant to be used from HMP, not from QMP

Sample output:

(qemu) sync-profile
sync-profile is off
(qemu) info sync-profile
Type               Object  Call site  Wait Time (s)         Count  Average (us)
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
(qemu) sync-profile on
(qemu) sync-profile
sync-profile is on
(qemu) info sync-profile 15
Type               Object  Call site                 Wait Time (s)         Count  Average (us)
----------------------------------------------------------------------------------------------
condvar    0x55a01813ced0  cpus.c:1165                    91.38235          2842      32154.24
BQL mutex  0x55a0171b7140  cpus.c:1434                    12.56490          5787       2171.23
BQL mutex  0x55a0171b7140  accel/tcg/cpu-exec.c:432        7.75846          2844       2728.01
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:870          5.09889          2884       1767.99
BQL mutex  0x55a0171b7140  accel/tcg/cpu-exec.c:529        3.46140          3254       1063.74
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:804          0.76333          8655         88.20
BQL mutex  0x55a0171b7140  cpus.c:1466                     0.60893          2941        207.05
BQL mutex  0x55a0171b7140  util/main-loop.c:236            0.00894          6425          1.39
mutex      [           3]  util/qemu-timer.c:520           0.00342         50611          0.07
mutex      [           2]  util/qemu-timer.c:426           0.00254         31336          0.08
mutex      [           3]  util/qemu-timer.c:234           0.00107         19275          0.06
mutex      0x55a0171d9960  vl.c:763                        0.00043          6425          0.07
mutex      0x55a0180d1bb0  monitor.c:458                   0.00015          1603          0.09
mutex      0x55a0180e4c78  chardev/char.c:109              0.00002           217          0.08
mutex      0x55a0180d1bb0  monitor.c:448                   0.00001           162          0.08
----------------------------------------------------------------------------------------------
(qemu) info sync-profile -m 15
Type               Object  Call site                 Wait Time (s)         Count  Average (us)
----------------------------------------------------------------------------------------------
condvar    0x55a01813ced0  cpus.c:1165                    95.11196          3051      31174.03
BQL mutex  0x55a0171b7140  accel/tcg/cpu-exec.c:432        7.92108          3052       2595.37
BQL mutex  0x55a0171b7140  cpus.c:1434                    13.38253          6210       2155.00
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:870          5.09901          3093       1648.57
BQL mutex  0x55a0171b7140  accel/tcg/cpu-exec.c:529        4.21123          3468       1214.31
BQL mutex  0x55a0171b7140  cpus.c:1466                     0.60895          3156        192.95
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:804          0.76337          9282         82.24
BQL mutex  0x55a0171b7140  util/main-loop.c:236            0.00944          6889          1.37
mutex      0x55a01813ce80  tcg/tcg.c:397                   0.00000            24          0.15
mutex      0x55a0180d1bb0  monitor.c:458                   0.00018          1922          0.09
mutex      [           2]  util/qemu-timer.c:426           0.00266         32710          0.08
mutex      0x55a0180e4c78  chardev/char.c:109              0.00002           260          0.08
mutex      0x55a0180d1bb0  monitor.c:448                   0.00001           187          0.08
mutex      0x55a0171d9960  vl.c:763                        0.00047          6889          0.07
mutex      [           3]  util/qemu-timer.c:520           0.00362         53377          0.07
----------------------------------------------------------------------------------------------
(qemu) info sync-profile -m -n 15
Type               Object  Call site                 Wait Time (s)         Count  Average (us)
----------------------------------------------------------------------------------------------
condvar    0x55a01813ced0  cpus.c:1165                   101.39331          3398      29839.12
BQL mutex  0x55a0171b7140  accel/tcg/cpu-exec.c:432        7.92112          3399       2330.43
BQL mutex  0x55a0171b7140  cpus.c:1434                    14.28280          6922       2063.39
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:870          5.77505          3445       1676.36
BQL mutex  0x55a0171b7140  accel/tcg/cpu-exec.c:529        5.66139          3883       1457.99
BQL mutex  0x55a0171b7140  cpus.c:1466                     0.60901          3519        173.06
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:804          0.76351         10338         73.85
BQL mutex  0x55a0171b7140  util/main-loop.c:236            0.01032          7664          1.35
mutex      0x55a0180e4f08  util/qemu-timer.c:426           0.00041           901          0.45
mutex      0x55a01813ce80  tcg/tcg.c:397                   0.00000            24          0.15
mutex      0x55a0180d1bb0  monitor.c:458                   0.00022          2319          0.09
mutex      0x55a0180e4c78  chardev/char.c:109              0.00003           306          0.08
mutex      0x55a0180e4f08  util/qemu-timer.c:520           0.00068          8565          0.08
mutex      0x55a0180d1bb0  monitor.c:448                   0.00002           215          0.08
mutex      0x55a0180e4f78  util/qemu-timer.c:426           0.00247         34224          0.07
----------------------------------------------------------------------------------------------
(qemu) sync-profile reset
(qemu) info sync-profile -m 2
Type               Object  Call site               Wait Time (s)         Count  Average (us)
--------------------------------------------------------------------------------------------
condvar    0x55a01813ced0  cpus.c:1165                   2.78756            99      28157.12
BQL mutex  0x55a0171b7140  accel/tcg/cputlb.c:870        0.33054           102       3240.55
--------------------------------------------------------------------------------------------
(qemu) sync-profile off
(qemu) sync-profile
sync-profile is off
(qemu) sync-profile reset
(qemu) info sync-profile
Type               Object  Call site  Wait Time (s)         Count  Average (us)
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agohmp-commands: add sync-profile
Emilio G. Cota [Wed, 15 Aug 2018 20:00:03 +0000 (16:00 -0400)]
hmp-commands: add sync-profile

The command introduced here is just for developers. This means that:

- the interface implemented here could change in the future
- the command is only meant to be used from HMP, not from QMP

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agovl: add -enable-sync-profile
Emilio G. Cota [Wed, 15 Aug 2018 15:42:49 +0000 (11:42 -0400)]
vl: add -enable-sync-profile

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests/atomic_add-bench: add -p to enable sync profiler
Emilio G. Cota [Wed, 15 Aug 2018 15:43:44 +0000 (11:43 -0400)]
tests/atomic_add-bench: add -p to enable sync profiler

When used together with -m, this allows us to benchmark the
profiler's performance impact on qemu_mutex_lock.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqsp: track BQL callers explicitly
Emilio G. Cota [Sat, 28 Oct 2017 06:16:41 +0000 (02:16 -0400)]
qsp: track BQL callers explicitly

The BQL is acquired via qemu_mutex_lock_iothread(), which makes
the profiler assign the associated wait time (i.e. most of
BQL wait time) entirely to that function. This loses the original
call site information, which does not help diagnose BQL contention.
Fix it by tracking the callers explicitly.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqsp: support call site coalescing
Emilio G. Cota [Fri, 17 Aug 2018 02:41:01 +0000 (22:41 -0400)]
qsp: support call site coalescing

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqsp: add qsp_reset
Emilio G. Cota [Fri, 17 Aug 2018 03:29:49 +0000 (23:29 -0400)]
qsp: add qsp_reset

I first implemented this by deleting all entries in the global
hash table. But doing that safely slows down profiling, since
we'd need to introduce rcu_read_lock/unlock in the fast path.

What's implemented here avoids messing with the thread-local
data in the global hash table. It achieves this by taking a snapshot
of the current state, so that subsequent reports present the delta
wrt to the snapshot.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqsp: add sort_by option to qsp_report
Emilio G. Cota [Fri, 17 Aug 2018 03:14:40 +0000 (23:14 -0400)]
qsp: add sort_by option to qsp_report

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqsp: QEMU's Synchronization Profiler
Emilio G. Cota [Tue, 8 Aug 2017 17:53:15 +0000 (13:53 -0400)]
qsp: QEMU's Synchronization Profiler

The goal of this module is to profile synchronization primitives (i.e.
mutexes, recursive mutexes and condition variables) so that scalability
issues can be quickly diagnosed.

Sync primitives are profiled by QSP based on the vaddr of the object accessed
as well as the call site (file:line_nr). That means the same object called
from two different call sites will be tracked in separate entries, which
might be reported together or separately (see subsequent commit on
call site coalescing).

Some perf numbers:

Host: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
Command: taskset -c 0 tests/atomic_add-bench -d 5 -m

- Before: 54.80 Mops/s
- After:  54.75 Mops/s

That is, a negligible slowdown due to the now indirect call to
qemu_mutex_lock. Note that using a branch instead of an indirect
call introduces a more severe slowdown (53.65 Mops/s, i.e. 2% slowdown).

Enabling the profiler (with -p, added in this series) is more interesting:

- No profiling: 54.75 Mops/s
- W/ profiling: 12.53 Mops/s

That is, a 4.36X slowdown.

We can break down this slowdown by removing the get_clock calls or
the entry lookup:

- No profiling:     54.75 Mops/s
- W/o get_clock:    25.37 Mops/s
- W/o entry lookup: 19.30 Mops/s
- W/ profiling:     12.53 Mops/s

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoseqlock: constify seqlock_read_begin
Emilio G. Cota [Sat, 18 Aug 2018 04:25:12 +0000 (00:25 -0400)]
seqlock: constify seqlock_read_begin

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests/device-introspect: Test with all machines, not only with "none"
Thomas Huth [Thu, 16 Aug 2018 11:35:57 +0000 (13:35 +0200)]
tests/device-introspect: Test with all machines, not only with "none"

Certain device introspection crashes used to only happen if you were
using a certain machine, e.g. if the machine was using serial_hd() or
nd_table[], and a device was trying to use these in its instance_init
function, too.

To be able to catch these problems, let's extend the device-introspect
test to check the devices on all machine types, with and without the
"-nodefaults" parameter (since this makes a difference sometimes, too).
Since this is a rather slow operation, and most of the problems are
already handled by testing with the "none" machine only, the test with
all machines is only run in the "make check SPEED=slow" mode.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-8-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests/device-introspection: Check that the qom-tree and qtree do not change
Thomas Huth [Thu, 16 Aug 2018 11:35:56 +0000 (13:35 +0200)]
tests/device-introspection: Check that the qom-tree and qtree do not change

Introspection should not change the qom-tree / qtree, so we should check
this in the device-introspect-test, too. This patch helped to find lots
of instrospection bugs during the QEMU v3.0 soft/hard-freeze period in the
last two months.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-7-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests: Skip old versioned machine types in quick testing mode
Thomas Huth [Thu, 16 Aug 2018 11:35:55 +0000 (13:35 +0200)]
tests: Skip old versioned machine types in quick testing mode

The tests that check something for all machine types currently spend
a lot of time checking old machine types (like "pc-i440fx-2.0" for
example). The chances that we find something new there in addition
to checking the latest version of a machine type are pretty low, so
we should not waste the time of the developers by testing this again
and again in the "quick" testing mode.
Thus let's add some code to determine whether we are testing a current
machine type or an old one, and only test the old types if we are
running in "SPEED=slow" mode.
This decreases the testing time quite a bit now, e.g. the qom-test
now finishes within 4 seconds for qemu-system-x86_64 instead of 30
seconds when testing all machines.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-6-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agohw/timer/mc146818rtc: Fix introspection problem
Thomas Huth [Thu, 16 Aug 2018 11:35:54 +0000 (13:35 +0200)]
hw/timer/mc146818rtc: Fix introspection problem

There is currently a funny problem with the "mc146818rtc" device:
1) Start QEMU like this:
   qemu-system-ppc64 -M pseries -S
2) At the HMP monitor, enter "info qom-tree". Note that there is an
   entry for "/rtc (spapr-rtc)".
3) Introspect the mc146818rtc device like this:
   device_add mc146818rtc,help
4) Run "info qom-tree" again. The "/rtc" entry is gone now!

The rtc_finalize() function of the mc146818rtc device has two bugs: First,
it tries to remove a "rtc" property, while the rtc_realizefn() added a
"rtc-time" property instead. And second, it should have been done in an
unrealize function, not in a finalize function, to avoid that this causes
problems during introspection.

But since adding aliases to the global machine state should not be done
from a device's realize function anyway, let's rather fix this issue
by moving the creation of the alias to the code that creates the device
(and thus is run from the machine init functions instead), i.e. the
mc146818_rtc_init() function for most machines. The prep machines are
special, since the mc146818rtc device is created here in the realize
function of the i82378 device. Since we certainly don't want to add the
alias there, we add it to some code that is called from the ibm_40p_init()
machine init function instead.
Since the alias is now only created during the machine init, we can remove
the object_property_del() completely.

Fixes: 654a36d857ff949e0d1989904b76f53fded9dc83
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-5-git-send-email-thuth@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agohw/timer/mc146818rtc: White space clean-up
Thomas Huth [Thu, 16 Aug 2018 11:35:53 +0000 (13:35 +0200)]
hw/timer/mc146818rtc: White space clean-up

mc146818rtc.c still contains some TABs. Replace them with spaces.
And while we're at it, also delete trailing whitespace in this file.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-4-git-send-email-thuth@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agonet: Silence 'has no peer' messages in testing mode
Thomas Huth [Thu, 16 Aug 2018 11:35:52 +0000 (13:35 +0200)]
net: Silence 'has no peer' messages in testing mode

When running qtests with -nodefaults, we are not interested in
these 'XYZ has no peer' messages.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-3-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests/migration-test: Silence the kvm_hv message by default
Thomas Huth [Thu, 16 Aug 2018 11:35:51 +0000 (13:35 +0200)]
tests/migration-test: Silence the kvm_hv message by default

When running "make check" on a non-POWER host, the output is quite
distorted like this:

  [...]
  GTESTER check-qtest-nios2
  GTESTER check-qtest-or1k
  GTESTER check-qtest-ppc64
Skipping test: kvm_hv not available Skipping test: kvm_hv not available Skipping test: kvm_hv not available Skipping test: kvm_hv not available   GTESTER check-qtest-ppcemb
  GTESTER check-qtest-ppc
  GTESTER check-qtest-riscv32
  GTESTER check-qtest-riscv64
  [...]

Move the check to the beginning of the main function instead, so that
we do not have to test the condition again and again for each test,
and better use g_test_message() instead of g_print() here, like it is
also done in ufd_version_check() already.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1534419358-10932-2-git-send-email-thuth@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoMAINTAINERS: add maintainers for qtest
Paolo Bonzini [Tue, 14 Aug 2018 15:40:41 +0000 (17:40 +0200)]
MAINTAINERS: add maintainers for qtest

Thomas has been doing a lot of work on qom-test and device-introspection-test,
and Laurent has ported libqos to sPAPR and co-mentored Emanuele on the
upcoming qtest device framework.  They deserve recognition. :)

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agomegasas: fix sglist leak
Marc-André Lureau [Tue, 14 Aug 2018 14:12:46 +0000 (16:12 +0200)]
megasas: fix sglist leak

tests/cdrom-test -p /x86_64/cdrom/boot/megasas

Produces the following ASAN leak.

==25700==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 16 byte(s) in 1 object(s) allocated from:
    #0 0x7f06f8faac48 in malloc (/lib64/libasan.so.5+0xeec48)
    #1 0x7f06f87a73c5 in g_malloc (/lib64/libglib-2.0.so.0+0x523c5)
    #2 0x55a729f17738 in pci_dma_sglist_init /home/elmarco/src/qq/include/hw/pci/pci.h:818
    #3 0x55a729f2a706 in megasas_map_dcmd /home/elmarco/src/qq/hw/scsi/megasas.c:698
    #4 0x55a729f39421 in megasas_handle_dcmd /home/elmarco/src/qq/hw/scsi/megasas.c:1574
    #5 0x55a729f3f70d in megasas_handle_frame /home/elmarco/src/qq/hw/scsi/megasas.c:1955
    #6 0x55a729f40939 in megasas_mmio_write /home/elmarco/src/qq/hw/scsi/megasas.c:2119
    #7 0x55a729f41102 in megasas_port_write /home/elmarco/src/qq/hw/scsi/megasas.c:2170
    #8 0x55a729220e60 in memory_region_write_accessor /home/elmarco/src/qq/memory.c:527
    #9 0x55a7292212b3 in access_with_adjusted_size /home/elmarco/src/qq/memory.c:594
    #10 0x55a72922cf70 in memory_region_dispatch_write /home/elmarco/src/qq/memory.c:1473
    #11 0x55a7290f5907 in flatview_write_continue /home/elmarco/src/qq/exec.c:3255
    #12 0x55a7290f5ceb in flatview_write /home/elmarco/src/qq/exec.c:3294
    #13 0x55a7290f6457 in address_space_write /home/elmarco/src/qq/exec.c:3384
    #14 0x55a7290f64a8 in address_space_rw /home/elmarco/src/qq/exec.c:3395
    #15 0x55a72929ecb0 in kvm_handle_io /home/elmarco/src/qq/accel/kvm/kvm-all.c:1729
    #16 0x55a7292a0db5 in kvm_cpu_exec /home/elmarco/src/qq/accel/kvm/kvm-all.c:1969
    #17 0x55a7291c4212 in qemu_kvm_cpu_thread_fn /home/elmarco/src/qq/cpus.c:1215
    #18 0x55a72a966a6c in qemu_thread_start /home/elmarco/src/qq/util/qemu-thread-posix.c:504
    #19 0x7f06ed486593 in start_thread (/lib64/libpthread.so.0+0x7593)

Move the qemu_sglist_destroy() from megasas_complete_command() to
megasas_unmap_frame(), so map/unmap are balanced.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180814141247.32336-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
5 years agochardev/char-fe: Fix typos
Julia Suvorova [Mon, 13 Aug 2018 09:34:02 +0000 (12:34 +0300)]
chardev/char-fe: Fix typos

Fixup some typos in the comments.

Signed-off-by: Julia Suvorova <jusual@mail.ru>
Message-Id: <20180813093402.10852-1-jusual@mail.ru>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoqemu-pr-helper: Fix build on CentOS 7
Murilo Opsfelder Araujo [Fri, 10 Aug 2018 14:11:16 +0000 (11:11 -0300)]
qemu-pr-helper: Fix build on CentOS 7

After commit b3f1c8c413bc83e4a2cc7a63e4eddf9fe6449052 "qemu-pr-helper: use new
libmultipath API", QEMU started using new libmultipath API, which is not
available on CentOS 7.x.

This fixes that by probing the new libmultipath API in configure.  If it fails,
then try probing the old API.  If it fails, then consider libmultipath not
available.

With this, configure script defines CONFIG_MPATH_NEW_API that is used in
scsi/qemu-pr-helper.c to use the new libmultipath API.

Fixes: b3f1c8c413bc83e4a2cc7a63e4eddf9fe6449052
BugLink: https://bugs.launchpad.net/qemu/+bug/1786343
Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com>
Message-Id: <20180810141116.24016-1-muriloo@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agocheckpatch: fix filename detection when using -f
Paolo Bonzini [Fri, 10 Aug 2018 14:35:19 +0000 (16:35 +0200)]
checkpatch: fix filename detection when using -f

Fix $realfile filename when using -f/--file to not remove first level
directory as if the filename was used in a -P1 patch.  Only strip the
first level directory (typically a or b) for P1 patches.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(extracted from Linux commit 2b7ab45395dc4d91ef30985f76d90a8f28f58c27)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agofix "Missing break in switch" coverity reports
Paolo Bonzini [Wed, 1 Aug 2018 15:14:09 +0000 (17:14 +0200)]
fix "Missing break in switch" coverity reports

Many of these are marked as "intentional/fix required" because they
just need adding a fall through comment.  This is exactly what this
patch does, except for target/mips/translate.c where it is easier to
duplicate the code, and hw/audio/sb16.c where I consulted the DOSBox
sources and decide to just remove the LOG_UNIMP before the fallthrough.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoes1370: simplify MemoryRegionOps
Paolo Bonzini [Wed, 1 Aug 2018 15:15:41 +0000 (17:15 +0200)]
es1370: simplify MemoryRegionOps

Use the automatic subregister extraction from the memory API, and avoid
that Coverity complains about missing fallthrough comments.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoscsi: mptsas: Mark as storage device
Guenter Roeck [Tue, 31 Jul 2018 22:28:53 +0000 (15:28 -0700)]
scsi: mptsas: Mark as storage device

mptsas1068 is currently listed as uncategorized device.
Mark it as storage device.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-Id: <1533076133-22745-1-git-send-email-linux@roeck-us.net>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agotests: virtio: separate ccw tests from libqos
Paolo Bonzini [Wed, 1 Aug 2018 13:26:22 +0000 (15:26 +0200)]
tests: virtio: separate ccw tests from libqos

Because qtest does not support s390 channel I/O, s390 only performs smoke tests on
those few devices that do not have any functional tests.  Therefore, every time we
add functional tests for a virtio device, the choice is between removing
those tests from the s390 suite (so that s390 actually _loses_ coverage)
or sprinkling the test with architecture checks.

This patch simply creates a ccw-specific test that only performs smoke tests on
all virtio-ccw devices.  If channel I/O support is ever added to qtest and libqos,
then this file can go away.  In the meanwhile, it simplifies maintenance and
makes sure that all virtio devices are tested.

Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoMerge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request...
Peter Maydell [Tue, 21 Aug 2018 10:36:14 +0000 (11:36 +0100)]
Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging

linux-user fixes:
- netlink fixes (add missing types, fix MSG_TRUNC)
- sh4 fix (tcg state)
- sparc32plus fix (truncate address space to 32bit)
- add x86_64 binfmt data

# gpg: Signature made Mon 20 Aug 2018 21:24:40 BST
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-3.1-pull-request:
  linux-user: add QEMU_IFLA_INFO_KIND nested type for tun
  linux-user: update netlink route types
  linux-user: introduce QEMU_RTA_* to use with rtattr_type_t
  linux-user: fix recvmsg()/recvfrom() with netlink and MSG_TRUNC
  sh4: fix use_icount with linux-user
  linux-user: fix 32bit g2h()/h2g()
  qemu-binfmt-conf.sh: add x86_64 target

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agoMerge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
Peter Maydell [Tue, 21 Aug 2018 09:23:53 +0000 (10:23 +0100)]
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc: fixes

This includes nvdimm persistence fixes queued before the release.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon 20 Aug 2018 11:38:11 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  migration/ram: ensure write persistence on loading all data to PMEM.
  migration/ram: Add check and info message to nvdimm post copy.
  mem/nvdimm: ensure write persistence to PMEM in label emulation
  hostmem-file: add the 'pmem' option
  configure: add libpmem support
  memory, exec: switch file ram allocation functions to 'flags' parameters
  memory, exec: Expose all memory block related flags.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agoMerge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc.for-upstream-20180820...
Peter Maydell [Tue, 21 Aug 2018 08:24:19 +0000 (09:24 +0100)]
Merge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc.for-upstream-20180820' into staging

qemu-sparc.for-upstream queue

# gpg: Signature made Mon 20 Aug 2018 19:38:04 BST
# gpg:                using RSA key 5BC2C56FAE0F321F
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/qemu-sparc.for-upstream-20180820:
  sun4m: don't use legacy fw_cfg_init_mem() function
  sun4u: ensure kernel_top is always initialised

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agolinux-user: add QEMU_IFLA_INFO_KIND nested type for tun
Laurent Vivier [Mon, 20 Aug 2018 17:15:57 +0000 (19:15 +0200)]
linux-user: add QEMU_IFLA_INFO_KIND nested type for tun

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-5-laurent@vivier.eu>

5 years agolinux-user: update netlink route types
Laurent Vivier [Mon, 20 Aug 2018 17:15:56 +0000 (19:15 +0200)]
linux-user: update netlink route types

Add RTA_PREF and RTA_CACHEINFO.

Fix following errors when we start gedit:

  Unknown host RTA type: 12
  Unknown host RTA type: 20

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-4-laurent@vivier.eu>

5 years agolinux-user: introduce QEMU_RTA_* to use with rtattr_type_t
Laurent Vivier [Mon, 20 Aug 2018 17:15:55 +0000 (19:15 +0200)]
linux-user: introduce QEMU_RTA_* to use with rtattr_type_t

Following commit will introduce RTA_PREF that appears only with
kernel v4.1. To avoid to manage a specific case for it, this patch
introduces the full list of rtattr_type_t prefixed with QEMU_ (as we
did for IFLA values)

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-3-laurent@vivier.eu>
[lv: added more RTA_* from linux v4.18]

5 years agolinux-user: fix recvmsg()/recvfrom() with netlink and MSG_TRUNC
Laurent Vivier [Mon, 20 Aug 2018 17:15:54 +0000 (19:15 +0200)]
linux-user: fix recvmsg()/recvfrom() with netlink and MSG_TRUNC

If recvmsg()/recvfrom() are used with the MSG_TRUNC flag, they return the
real length even if it was longer than the passed buffer.
So when we translate the buffer we must check we don't go beyond the
end of the buffer.

Bug: https://github.com/vivier/qemu-m68k/issues/33
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-2-laurent@vivier.eu>

5 years agosun4m: don't use legacy fw_cfg_init_mem() function
Mark Cave-Ayland [Fri, 10 Aug 2018 11:41:10 +0000 (12:41 +0100)]
sun4m: don't use legacy fw_cfg_init_mem() function

Instead initialise the device via qdev to allow us to set device properties
directly as required.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
5 years agosun4u: ensure kernel_top is always initialised
Mark Cave-Ayland [Fri, 10 Aug 2018 10:40:37 +0000 (11:40 +0100)]
sun4u: ensure kernel_top is always initialised

Valgrind reports that when loading a non-ELF kernel, kernel_top may be used
uninitialised when checking for an initrd.

Since there are no known non-ELF kernels for SPARC64 then we can simply
initialise kernel_top to 0 and then skip the initrd load process if it hasn't
been set by load_elf().

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
5 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20180820' into staging
Peter Maydell [Mon, 20 Aug 2018 16:41:18 +0000 (17:41 +0100)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20180820' into staging

First round of s390x patches for 3.1:
- add compat machine for 3.1
- remove deprecated 's390-squash-mcss' option
- cpu models: add "max" cpu model, enhance feature group code
- kvm: add support for etoken facility and huge page backing

# gpg: Signature made Mon 20 Aug 2018 13:47:38 BST
# gpg:                using RSA key DECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>"
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20180820:
  s390x: Enable KVM huge page backing support
  s390x/kvm: add etoken facility
  linux-headers: update
  s390x/cpumodel: Add "-cpu max" support
  s390x: remove 's390-squash-mcss' option
  s390x/cpumodel: enum type S390FeatGroup now gets generated
  s390x: introduce 3.1 compat machine

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agotests/vm: Clean out old working directories on build
Peter Maydell [Mon, 20 Aug 2018 12:48:11 +0000 (13:48 +0100)]
tests/vm: Clean out old working directories on build

When we do a build inside one of the BSD VMs, first
delete any stale old build directories from the VM's
/var/tmp. This prevents the VM from running out of
disk space after it has been used for a dozen or
so builds.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20180820124811.7982-1-peter.maydell@linaro.org

5 years agoMerge remote-tracking branch 'remotes/marcel/tags/rdma-pull-request' into staging
Peter Maydell [Mon, 20 Aug 2018 14:44:40 +0000 (15:44 +0100)]
Merge remote-tracking branch 'remotes/marcel/tags/rdma-pull-request' into staging

RDMA queue

# gpg: Signature made Sat 18 Aug 2018 16:01:46 BST
# gpg:                using RSA key 36D4C0F0CF2FE46D
# gpg: Good signature from "Marcel Apfelbaum <marcel.apfelbaum@zoho.com>"
# gpg:                 aka "Marcel Apfelbaum <marcel@redhat.com>"
# gpg:                 aka "Marcel Apfelbaum <marcel.apfelbaum@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: B1C6 3A57 F92E 08F2 640F  31F5 36D4 C0F0 CF2F E46D

* remotes/marcel/tags/rdma-pull-request:
  config: split PVRDMA from RDMA
  hw/pvrdma: remove not needed include
  hw/rdma: Add reference to pci_dev in backend_dev
  hw/rdma: Bugfix - Support non-aligned buffers
  hw/rdma: Print backend QP number in hex format
  hw/rdma: Cosmetic change - move to generic function
  hw/pvrdma: Cosmetic change - indent right
  hw/rdma: Reorder resource cleanup
  hw/rdma: Do not allocate memory for non-dma MR
  hw/rdma: Delete useless structure RdmaRmUserMR
  hw/pvrdma: Make default pkey 0xFFFF
  hw/pvrdma: Clean CQE before use
  hw/rdma: Modify debug macros
  hw/pvrdma: Bugfix - provide the correct attr_mask to query_qp
  hw/rdma: Make distinction between device init and start modes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agoMerge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180820' into...
Peter Maydell [Mon, 20 Aug 2018 12:22:21 +0000 (13:22 +0100)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180820' into staging

target-arm queue:
 * Fix crash on conditional instruction in an IT block
 * docs/generic-loader: mention U-Boot and Intel HEX executable formats
 * hw/intc/arm_gicv3_its: downgrade error_report to warn_report in kvm_arm_its_reset
 * imx_serial: Generate interrupt on receive data ready if enabled
 * Fix various minor bugs in AArch32 Hyp related coprocessor registers
 * Permit accesses to ELR_Hyp from Hyp mode via MSR/MRS (banked)
 * Implement AArch32 ERET instruction
 * hw/arm/virt: Add virt-3.1 machine type
 * sdhci: add i.MX SD Stable Clock bit
 * Remove now-obsolete MMIO request_ptr APIs
 * hw/timer/m48t59: Move away from old_mmio accessors
 * hw/watchdog/cmsdk_apb_watchdog: Implement CMSDK APB watchdog module
 * nvic: Expose NMI line
 * hw/dma/pl080: cleanups and new features required for use in MPS boards

# gpg: Signature made Mon 20 Aug 2018 11:30:12 BST
# gpg:                using RSA key 3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20180820: (25 commits)
  hw/dma/pl080: Remove hw_error() if DMA is enabled
  hw/dma/pl080: Correct bug in register address decode logic
  hw/dma/pl080: Provide device reset function
  hw/dma/pl080: Don't use CPU address space for DMA accesses
  hw/dma/pl080: Support all three interrupt lines
  hw/dma/pl080: Allow use as embedded-struct device
  nvic: Expose NMI line
  hw/watchdog/cmsdk_apb_watchdog: Implement CMSDK APB watchdog module
  hw/timer/m48t59: Move away from old_mmio accessors
  hw/misc: Remove mmio_interface device
  memory: Remove MMIO request_ptr APIs
  hw/ssi/xilinx_spips: Remove unneeded MMIO request_ptr code
  sdhci: add i.MX SD Stable Clock bit
  hw/arm/virt: Add virt-3.1 machine type
  target/arm: Implement AArch32 ERET instruction
  target/arm: Permit accesses to ELR_Hyp from Hyp mode via MSR/MRS (banked)
  target/arm: Implement ESR_EL2/HSR for AArch32 and no-EL2
  target/arm: Implement AArch32 Hyp FARs
  target/arm: Implement AArch32 HVBAR
  target/arm: Add missing .cp = 15 to HMAIR1 and HAMAIR1 regdefs
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agos390x: Enable KVM huge page backing support
Janosch Frank [Thu, 2 Aug 2018 07:02:01 +0000 (08:02 +0100)]
s390x: Enable KVM huge page backing support

QEMU has had huge page support for a longer time already, but KVM
memory management under s390x needed some changes to work with huge
backings.

Now that we have support, let's enable it if requested and
available. Otherwise we now properly tell the user if there is no
support and back out instead of failing to run the VM later on.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180802070201.257406-1-frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agos390x/kvm: add etoken facility
Christian Borntraeger [Tue, 31 Jul 2018 09:04:48 +0000 (11:04 +0200)]
s390x/kvm: add etoken facility

Provide the etoken facility. We need to handle cpu model, migration and
clear reset.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20180731090448.36662-3-borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agolinux-headers: update
Cornelia Huck [Wed, 8 Aug 2018 14:19:49 +0000 (16:19 +0200)]
linux-headers: update

Update to Linux upstream commit 2ad0d5269970
("Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net")

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agos390x/cpumodel: Add "-cpu max" support
David Hildenbrand [Wed, 25 Jul 2018 09:12:33 +0000 (11:12 +0200)]
s390x/cpumodel: Add "-cpu max" support

The "max" CPU model behaves like "-cpu host" when KVM is enabled, and like
a CPU with the maximum possible feature set when TCG is enabled.

While the "host" model can not be used under TCG ("kvm_required"), the
"max" model can and "Enables all features supported by the accelerator in
the current host".

So we can treat "host" just as a special case of "max" (like x86 does).
It differs to the "qemu" CPU model under TCG such that compatibility
handling will not be performed and that some experimental CPU features
not yet part of the "qemu" model might be indicated.

These are right now under TCG (see "qemu_MAX"):
- stfle53
- msa5-base
- zpci

This will result right now in the following warning when starting QEMU TCG
with the "max" model:
    "qemu-system-s390x: warning: 'msa5-base' requires 'kimd-sha-512'."

The "qemu" model (used as default in QEMU under TCG) will continue to
work without such warnings. The "max" model in the current form
might be interesting for kvm-unit-tests (where we would e.g. now also
test "msa5-base").

The "max" model is neither static nor migration safe (like the "host"
model). It is independent of the machine but dependends on the accelerator.
It can be used to detect the maximum CPU model also under TCG from upper
layers without having to care about CPU model names for CPU model
expansion.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180725091233.3300-1-david@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
[CH: minor wording changes]
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agos390x: remove 's390-squash-mcss' option
Cornelia Huck [Mon, 23 Jul 2018 16:32:21 +0000 (18:32 +0200)]
s390x: remove 's390-squash-mcss' option

This option has been deprecated for two releases; remove it.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agos390x/cpumodel: enum type S390FeatGroup now gets generated
Michael Mueller [Wed, 25 Jul 2018 14:36:17 +0000 (16:36 +0200)]
s390x/cpumodel: enum type S390FeatGroup now gets generated

The enumeration type S390FeatGroup is now generated as well.
This shall simplify the definition of new feature groups
without the requirement to modify existing code.

Signed-off-by: Michael Mueller <mimu@linux.ibm.com>
Message-Id: <20180725143617.8731-1-mimu@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agos390x: introduce 3.1 compat machine
Cornelia Huck [Mon, 23 Jul 2018 13:00:54 +0000 (15:00 +0200)]
s390x: introduce 3.1 compat machine

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
5 years agohw/dma/pl080: Remove hw_error() if DMA is enabled
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/dma/pl080: Remove hw_error() if DMA is enabled

The PL08x model currently will unconditionally call hw_error()
if the DMA engine is enabled by the guest. This has been
present since the PL080 model was edded in 2006, and is
presumably either unintentional debug code left enabled,
or a guard against untested DMA engine code being used.

Remove the hw_error(), since we now have a guest which
will actually try to use the DMA engine (the self-test
binary for the AN505 MPS2 FPGA image).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agohw/dma/pl080: Correct bug in register address decode logic
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/dma/pl080: Correct bug in register address decode logic

A bug in the handling of the register address decode logic
for the PL08x meant that we were incorrectly treating
accesses to the DMA channel registers (DMACCxSrcAddr,
DMACCxDestaddr, DMACCxLLI, DMACCxControl, DMACCxConfiguration)
as bad offsets. Fix this long-standing bug.

Fixes: https://bugs.launchpad.net/qemu/+bug/1637974
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agohw/dma/pl080: Provide device reset function
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/dma/pl080: Provide device reset function

The PL080/PL081 model is missing a reset function; implement it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agohw/dma/pl080: Don't use CPU address space for DMA accesses
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/dma/pl080: Don't use CPU address space for DMA accesses

Currently our PL080/PL081 model uses a combination of the CPU's
address space (via cpu_physical_memory_{read,write}()) and the
system address space for performing DMA accesses.

For the PL081s in the MPS FPGA images, their DMA accesses
must go via Master Security Controllers. Switch the
PL080/PL081 model to take a MemoryRegion property which
defines its downstream for making DMA accesses.

Since the PL08x are only used in two board models, we
make provision of the 'downstream' link mandatory and convert
both users at once, rather than having it be optional with
a default to the system address space.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agohw/dma/pl080: Support all three interrupt lines
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/dma/pl080: Support all three interrupt lines

The PL080 and PL081 have three outgoing interrupt lines:
 * DMACINTERR signals DMA errors
 * DMACINTTC is the DMA count interrupt
 * DMACINTR is a combined interrupt, the logical OR of the other two

We currently only implement DMACINTR, because that's all the
realview and versatile boards needed, but the instances of the
PL081 in the MPS2 firmware images use all three interrupt lines.
Implement the missing DMACINTERR and DMACINTTC.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agohw/dma/pl080: Allow use as embedded-struct device
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/dma/pl080: Allow use as embedded-struct device

Create a new include file for the pl081's device struct,
type macros, etc, so that it can be instantiated using
the "embedded struct" coding style.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agonvic: Expose NMI line
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
nvic: Expose NMI line

On real v7M hardware, the NMI line is an externally visible signal
that an SoC or board can toggle to assert an NMI. Expose it in
our QEMU NVIC and armv7m container objects so that a board model
can wire it up if it needs to.

In particular, the MPS2 watchdog is wired to NMI.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
5 years agohw/watchdog/cmsdk_apb_watchdog: Implement CMSDK APB watchdog module
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/watchdog/cmsdk_apb_watchdog: Implement CMSDK APB watchdog module

The Arm Cortex-M System Design Kit includes a simple watchdog module
based on a 32-bit down-counter. Implement this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agohw/timer/m48t59: Move away from old_mmio accessors
Peter Maydell [Mon, 20 Aug 2018 10:24:33 +0000 (11:24 +0100)]
hw/timer/m48t59: Move away from old_mmio accessors

Move the m48t59 device away from using old_mmio MemoryRegionOps
accessors.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-id: 20180802180602.22047-1-peter.maydell@linaro.org

5 years agohw/misc: Remove mmio_interface device
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
hw/misc: Remove mmio_interface device

The mmio_interface device was a purely internal artifact
of the implementation of the memory subsystem's request_ptr
APIs. Now that we have removed those APIs, we can remove
the mmio_interface device too.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com>
Message-id: 20180817114619.22354-4-peter.maydell@linaro.org

5 years agomemory: Remove MMIO request_ptr APIs
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
memory: Remove MMIO request_ptr APIs

Remove the obsolete MMIO request_ptr APIs; they have no
users now.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com>
Message-id: 20180817114619.22354-3-peter.maydell@linaro.org

5 years agohw/ssi/xilinx_spips: Remove unneeded MMIO request_ptr code
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
hw/ssi/xilinx_spips: Remove unneeded MMIO request_ptr code

We now support direct execution from MMIO regions in the
core memory subsystem. This means that we don't need to
have device-specific support for it, and we can remove
the request_ptr handling from the Xilinx SPIPS device.
(It was broken anyway due to race conditions, and disabled
by default.)

This device is the only in-tree user of this API.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com>
Message-id: 20180817114619.22354-2-peter.maydell@linaro.org

5 years agosdhci: add i.MX SD Stable Clock bit
Hans-Erik Floryd [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
sdhci: add i.MX SD Stable Clock bit

Add the ESDHC PRSSTAT_SDSTB bit, using the value of SDHC_CLOCK_INT_STABLE.
Freescale recommends checking this bit when changing clock frequency.

Signed-off-by: Hans-Erik Floryd <hans-erik.floryd@rt-labs.com>
Message-id: 1534507843-4251-1-git-send-email-hans-erik.floryd@rt-labs.com
[PMM: fixed indentation]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agohw/arm/virt: Add virt-3.1 machine type
Andrew Jones [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
hw/arm/virt: Add virt-3.1 machine type

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agotarget/arm: Implement AArch32 ERET instruction
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
target/arm: Implement AArch32 ERET instruction

ARMv7VE introduced the ERET instruction, which is necessary to
return from an exception taken to Hyp mode. Implement this.
In A32 encoding it is a completely new encoding; in T32 it
is an adjustment of the behaviour of the existing
"SUBS PC, LR, #<imm8>" instruction.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-10-peter.maydell@linaro.org

5 years agotarget/arm: Permit accesses to ELR_Hyp from Hyp mode via MSR/MRS (banked)
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
target/arm: Permit accesses to ELR_Hyp from Hyp mode via MSR/MRS (banked)

The MSR (banked) and MRS (banked) instructions allow accesses to ELR_Hyp
from either Monitor or Hyp mode. Our translate time check
was overly strict and only permitted access from Monitor mode.

The runtime check we do in msr_mrs_banked_exc_checks() had the
correct code in it, but never got there because of the earlier
"currmode == tgtmode" check. Special case ELR_Hyp.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-9-peter.maydell@linaro.org

5 years agotarget/arm: Implement ESR_EL2/HSR for AArch32 and no-EL2
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
target/arm: Implement ESR_EL2/HSR for AArch32 and no-EL2

The AArch32 HSR is the equivalent of AArch64 ESR_EL2;
we can implement it by marking our existing ESR_EL2 regdef
as STATE_BOTH. It also needs to be "RES0 from EL3 if
EL2 not implemented", so add the missing stanza to
el3_no_el2_cp_reginfo.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-8-peter.maydell@linaro.org

5 years agotarget/arm: Implement AArch32 Hyp FARs
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
target/arm: Implement AArch32 Hyp FARs

The AArch32 virtualization extensions support these fault address
registers:
 * HDFAR: aliased with AArch64 FAR_EL2[31:0] and AArch32 DFAR(S)
 * HIFAR: aliased with AArch64 FAR_EL2[63:32] and AArch32 IFAR(S)

Implement the accessors for these. This fixes in passing a bug
where we weren't implementing the "RES0 from EL3 if EL2 not
implemented" behaviour for AArch64 FAR_EL2.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-7-peter.maydell@linaro.org

5 years agotarget/arm: Implement AArch32 HVBAR
Peter Maydell [Mon, 20 Aug 2018 10:24:32 +0000 (11:24 +0100)]
target/arm: Implement AArch32 HVBAR

Implement the AArch32 HVBAR register; we can do this just by
making the existing VBAR_EL2 regdefs be STATE_BOTH.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-5-peter.maydell@linaro.org

5 years agotarget/arm: Add missing .cp = 15 to HMAIR1 and HAMAIR1 regdefs
Peter Maydell [Mon, 20 Aug 2018 10:24:31 +0000 (11:24 +0100)]
target/arm: Add missing .cp = 15 to HMAIR1 and HAMAIR1 regdefs

ARMCPRegInfo structs will default to .cp = 15 if they
are ARM_CP_STATE_BOTH, but not if they are ARM_CP_STATE_AA32
(because a coprocessor number of 0 is valid for AArch32).
We forgot to explicitly set .cp = 15 for the HMAIR1 and
HAMAIR1 regdefs, which meant they would UNDEF when the guest
tried to access them under cp15.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-3-peter.maydell@linaro.org

5 years agotarget/arm: Correct typo in HAMAIR1 regdef name
Peter Maydell [Mon, 20 Aug 2018 10:24:31 +0000 (11:24 +0100)]
target/arm: Correct typo in HAMAIR1 regdef name

We implement the HAMAIR1 register as RAZ/WI; we had a typo in the
regdef, though, and were incorrectly naming it HMAIR1 (which is
a different register which we also implement as RAZ/WI).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20180814124254.5229-2-peter.maydell@linaro.org

5 years agoimx_serial: Generate interrupt on receive data ready if enabled
Hans-Erik Floryd [Mon, 20 Aug 2018 10:24:31 +0000 (11:24 +0100)]
imx_serial: Generate interrupt on receive data ready if enabled

Generate an interrupt if USR2_RDR and UCR4_DREN are both set.

Signed-off-by: Hans-Erik Floryd <hans-erik.floryd@rt-labs.com>
Message-id: 1534341354-11956-1-git-send-email-hans-erik.floryd@rt-labs.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agohw/intc/arm_gicv3_its: downgrade error_report to warn_report in kvm_arm_its_reset
Jia He [Mon, 20 Aug 2018 10:24:31 +0000 (11:24 +0100)]
hw/intc/arm_gicv3_its: downgrade error_report to warn_report in kvm_arm_its_reset

In scripts/arch-run.bash of kvm-unit-tests, it will check the qemu
output log with:
if [ -z "$(echo "$errors" | grep -vi warning)" ]; then

Thus without the warning prefix, all of the test fail.

Since it is not unrecoverable error in kvm_arm_its_reset for
current implementation, downgrading the report from error to
warn makes sense.

Signed-off-by: Jia He <jia.he@hxt-semitech.com>
Message-id: 1531969910-32843-1-git-send-email-jia.he@hxt-semitech.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agodocs/generic-loader: mention U-Boot and Intel HEX executable formats
Stefan Hajnoczi [Mon, 20 Aug 2018 10:24:31 +0000 (11:24 +0100)]
docs/generic-loader: mention U-Boot and Intel HEX executable formats

The generic loader device supports the U-Boot and Intel HEX executable
formats in addition to the document raw and ELF formats.  Reword the
documentation to include these formats and explain how various options
depend on the executable format.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20180816145554.9814-1-stefanha@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agotarget/arm: Fix crash on conditional instruction in an IT block
Roman Kapl [Mon, 20 Aug 2018 10:24:31 +0000 (11:24 +0100)]
target/arm: Fix crash on conditional instruction in an IT block

If an instruction is conditional (like CBZ) and it is executed
conditionally (using the ITx instruction), a jump to an undefined
label is generated, and QEMU crashes.

CBZ in IT block is an UNPREDICTABLE behavior, but we should not
crash.  Honouring the condition code is allowed by the spec in this
case (constrained unpredictable, ARMv8, section K1.1.7), and matches
what we do for other "UNPREDICTABLE inside an IT block" instructions.

Fix the 'skip on condition' code to create a new label only if it
does not already exist.  Previously multiple labels were created, but
only the last one of them was set.

Signed-off-by: Roman Kapl <rka@sysgo.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180816120533.6587-1-rka@sysgo.com
[PMM: fixed ^ 1 being applied to wrong argument, fixed typo]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agotests/boot-serial-test: Bump timeout to 6 minutes
Peter Maydell [Fri, 17 Aug 2018 16:14:04 +0000 (17:14 +0100)]
tests/boot-serial-test: Bump timeout to 6 minutes

On a SPARC host that I'm using as a build test machine, the
boot-serial-test for the SPARC guest machines takes about 65
seconds to execute. This means that it hits the current
60 second timer on these tests. Push the timeout up so
that it doesn't trigger spuriously on slow hosts like this one.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-id: 20180817161404.9420-1-peter.maydell@linaro.org

5 years agoMerge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into...
Peter Maydell [Mon, 20 Aug 2018 08:48:03 +0000 (09:48 +0100)]
Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

Machine queue, 2018-08-17

* Allow machine classes to specify if boot device suffixes should
  be ignored by get_boot_devices_list()
* Tiny coding style fixup

# gpg: Signature made Fri 17 Aug 2018 19:29:22 BST
# gpg:                using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/machine-next-pull-request:
  fw_cfg: ignore suffixes in the bootdevice list dependent on machine class
  sysbus: always allow explicit_ofw_unit_address() to override address generation
  machine: Fix coding style at machine_run_board_init()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
5 years agosh4: fix use_icount with linux-user
Laurent Vivier [Sat, 11 Aug 2018 08:23:28 +0000 (10:23 +0200)]
sh4: fix use_icount with linux-user

This fixes java in a linux-user chroot:
  $ java --version
  qemu-sh4: .../accel/tcg/cpu-exec.c:634: cpu_loop_exec_tb: Assertion `use_icount' failed.
  qemu: uncaught target signal 6 (Aborted) - core dumped
  Aborted (core dumped)

In gen_conditional_jump() in the GUSA_EXCLUSIVE part, we must reset
base.is_jmp to DISAS_NEXT after the gen_goto_tb() as it is done in
gen_delayed_conditional_jump() after the gen_jump().

Bug: https://bugs.launchpad.net/qemu/+bug/1768246
Fixes: 4834871bc95b67343248100e2a75ae0d287bc08b
       ("target/sh4: Convert to DisasJumpType")
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20180811082328.11268-1-laurent@vivier.eu>

5 years agoconfig: split PVRDMA from RDMA
Marcel Apfelbaum [Thu, 16 Aug 2018 15:16:37 +0000 (18:16 +0300)]
config: split PVRDMA from RDMA

In some BSD systems RDMA migration is possible while
the pvrdma device can't be used because the mremap system call
is missing.

Reported-by: Rebecca Cran <rebecca@bluestop.org>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <20180816151637.24553-1-marcel.apfelbaum@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>