Merge tag 'pull-request-2022-09-20' of https://gitlab.com/thuth/qemu into staging

* Skip tests if the corresponding feature is missing
* Update NetBSD VM test to version 9.3
* Update the FreeBSD CI to version 13.1
* Some small fixes for the qtests
* Update wordings in the QEMU guest-agent

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# gpg: Signature made Tue 20 Sep 2022 09:22:45 EDT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2022-09-20' of https://gitlab.com/thuth/qemu:
  qga: Replace 'blacklist' and 'whitelist' in the guest agent sources
  qga: Replace 'blacklist' command line and config file options by 'block-rpcs'
  gitlab-ci: Update the FreeBSD 13 job from 13.0 to 13.1
  tests: sb16 has both pc and q35 tests
  tests: Only run intel-hda-tests if machine type is compiled in
  bios-tables-test: Only run test for machine types compiled in
  bios-tables-test: Sort all x86_64 tests by machine type
  bios-tables-test: Make oem-fields tests be consistent
  meson-build: Enable CONFIG_REPLICATION only when replication is set
  tests: Fix error strings
  qtest/fuzz-lsi53c895a-test: set guest RAM to 2G
  tests/qtest: npcm7xx-emc-test: Skip checking MAC
  .gitlab-ci.d/windows.yml: Drop the sed processing in the 64-bit build
  tests/vm: update NetBSD to 9.3
  tests: mark io-command test as skipped if socat is missing

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* add help option for -audio and -audiodev
* another missing memory barrier for dirty pages
* target/i386: Raise #GP on unaligned m128 accesses
* coverity fixes + improvements to components
* add MMX and 3DNow! tests
* SSE4a fixes
* target/i386: TCG translation cleanups
* update qboot submodule

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# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (21 commits)
  qboot: update to latest submodule
  build: remove extra parentheses causing missing rebuilds
  target/i386: introduce insn_get_addr
  target/i386: REPZ and REPNZ are mutually exclusive
  target/i386: fix INSERTQ implementation
  target/i386: correctly mask SSE4a bit indices in register operands
  audio: add help option for -audio and -audiodev
  tests/tcg: remove old SSE tests
  tests/tcg: refine MMX support in SSE tests
  tests/tcg: i386: add MMX and 3DNow! tests
  tests/tcg: i386: fix typos in 3DNow! instructions
  tests: unit: add NULL-pointer check
  tests: test-qga: close socket on failure to connect
  tests: unit: simplify test-visitor-serialization list tests
  smbios: sanitize type from external type before checking have_fields_bitmap
  coverity: put NUBus under m68k component
  coverity: add new RISC-V component
  spapr_pci: fix leak in spapr_phb_vfio_get_loc_code
  kvm: fix memory leak on failure to read stats descriptors
  target/i386: Raise #GP on unaligned m128 accesses when required.
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'pull-loongarch-20220920' of https://gitlab.com/gaosong/qemu into staging

v2: fix compile error.

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# gpg: Can't check signature: No public key

* tag 'pull-loongarch-20220920' of https://gitlab.com/gaosong/qemu:
  hw/loongarch: Improve acpi dsdt table
  hw/loongarch: Support memory hotplug
  hw/loongarch: Fix acpi ged irq number in dsdt table
  hw/loongarch: Add RAMFB to dynamic_sysbus_devices list
  hw/loongarch: Add hotplug handler for machine
  hw/loongarch: Add platform bus support
  hw/loongarch: Add interrupt information to FDT table
  hw/loongarch: Support fw_cfg dma function
  hw/loongarch: Remove vga device when loongarch init

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

qga: Replace 'blacklist' and 'whitelist' in the guest agent sources

Let's use better, more inclusive wording here.

Message-Id: <20220727092135.302915-3-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

qga: Replace 'blacklist' command line and config file options by 'block-rpcs'

Let's use a more appropriate wording for this command line and config
file option. The old ones are still accepted for compatibility reasons,
but marked as deprecated now so that it could be removed in a future
version of QEMU.

This change is based on earlier patches from Philippe Mathieu-Daudé,
with the idea for the new option name suggested by BALATON Zoltan.

And while we're at it, replace the "?" in the help text with "help"
since that does not have the problem of conflicting with the wildcard
character of the shells.

Message-Id: <20220727092135.302915-2-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

gitlab-ci: Update the FreeBSD 13 job from 13.0 to 13.1

The FreeBSD 13 job in our CI started failing since the python port
stopped working after 13.1 has been released. Thus update our CI
job to FreeBSD 13.1 to get it working again.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220920102041.45067-1-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests: sb16 has both pc and q35 tests

Check that the machines are compiled in before calling it

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902173452.1904-6-quintela@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests: Only run intel-hda-tests if machine type is compiled in

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902173452.1904-5-quintela@redhat.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Signed-off-by: Thomas Huth <thuth@redhat.com>

bios-tables-test: Only run test for machine types compiled in

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902173452.1904-4-quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

bios-tables-test: Sort all x86_64 tests by machine type

No code change here, just move test around.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902173452.1904-3-quintela@redhat.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Signed-off-by: Thomas Huth <thuth@redhat.com>

bios-tables-test: Make oem-fields tests be consistent

Every other test function is named:

test_acpi_<machine>_<test>()

Just make this test the same.  Once there, rename "acpi/oem-fields" to
"acpi/piix4/oem-fields" so it is consistent with everything else.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902173452.1904-2-quintela@redhat.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

meson-build: Enable CONFIG_REPLICATION only when replication is set

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902165126.1482-8-quintela@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests: Fix error strings

They were copy-pasted from e1000e and never changed.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20220902165126.1482-7-quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

hw/loongarch: Improve acpi dsdt table

Cleanup the previous pci information in acpi dsdt table.
And using the common acpi_dsdt_add_gpex function to build
the gpex and pci information.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-10-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Support memory hotplug

Add hotplug/unplug interface for memory device.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-9-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Fix acpi ged irq number in dsdt table

In dsdt, acpi ged irq should use gsi number, and the
VIRT_SCI_IRQ means it.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-8-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Add RAMFB to dynamic_sysbus_devices list

Add RAMFB device to dynamic_sysbus_devices list so that it can be
hotpluged to the machine.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-7-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Add hotplug handler for machine

Add hotplug handler for LoongArch virt machine and now only support
the dynamic sysbus device.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-6-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Add platform bus support

Add platform bus support and add the bus information such as address,
size, irq number to FDT table.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-5-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Add interrupt information to FDT table

Add interrupt information to FDT table, such as interrupt
controller info, compatiable info, etc.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-4-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

qboot: update to latest submodule

Include patch "Place setup_data at location specified by host"
from Jason A. Donenfeld.

Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

build: remove extra parentheses causing missing rebuilds

Because of two stray parentheses at the end of the definition of
ninja-cmd-goals, the test that is last in the .check-TESTSUITENAME.deps
variable will not be rebuilt.  Fix that.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386: introduce insn_get_addr

The "O" operand type in the Intel SDM needs to load an 8- to 64-bit
unsigned value, while insn_get is limited to 32 bits.  Extract the code
out of disas_insn and into a separate function.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386: REPZ and REPNZ are mutually exclusive

The later prefix wins if both are present, make it show in s->prefix too.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386: fix INSERTQ implementation

INSERTQ is defined to not modify any bits in the lower 64 bits of the
destination, other than the ones being replaced with bits from the
source operand.  QEMU instead is using unshifted bits from the source
for those bits.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386: correctly mask SSE4a bit indices in register operands

SSE4a instructions EXTRQ and INSERTQ have two bit index operands, that can be
immediates or taken from an XMM register.  In both cases, the fields are
6-bit wide and the top two bits in the byte are ignored.  translate.c is
doing that correctly for the immediate case, but not for the XMM case, so
fix it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

audio: add help option for -audio and -audiodev

add a simple help option for -audio and -audiodev
to show the list of available drivers, and document them.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20220908081441.7111-1-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests/tcg: remove old SSE tests

The new testsuite is much more comprehensive, so remove the old one;
it is also buggy (the pinsrw test uses incorrect constraints, with =
instead of +, and the golden output for the fxsave tests differs depending
on how the C library uses SSE and AVX instructions).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests/tcg: refine MMX support in SSE tests

Extend the support to memory operands, and skip MMX instructions that
were introduced in SSE times, because they are now covered in test-mmx.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests/tcg: i386: add MMX and 3DNow! tests

Adjust the test-avx.py generator to produce tests specifically for
MMX and 3DNow.  Using a separate generator introduces some code
duplication, but is a simpler approach because of test-avx's extra
complexity to support 3- and 4-operand AVX instructions.

If needed, a common library can be introduced later.

While at it, for consistency move all the -cpu max rules to the
same place.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qtest/fuzz-lsi53c895a-test: set guest RAM to 2G

test_lsi_do_msgout_cancel_req does not run on machines with small size
memory. Reduce guest memory from 4G to 2G to alleviate the problem.

Reported-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Mauro Matteo Cascella <mcascell@redhat.com>
Message-Id: <20220902133853.834065-1-mcascell@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/qtest: npcm7xx-emc-test: Skip checking MAC

The register tests walks all the registers to verify they are initially
0 when appropriate.  However, if the MAC address is set in the register
space, this should not be checked against 0.

Reviewed-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Patrick Venture <venture@google.com>
Message-Id: <20220906163138.2831353-1-venture@google.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.gitlab-ci.d/windows.yml: Drop the sed processing in the 64-bit build

The sed processing of build/config-host.mak seems to be no longer
needed, and there is no such in the 32-bit build too. Drop it.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20220908132817.1831008-5-bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/vm: update NetBSD to 9.3

Update NetBSD to 9.3

Signed-off-by: Brad Smith <brad@comstyle.com>
Message-Id: <YxacoSbT1cZR4SKr@humpty.home.comstyle.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests: mark io-command test as skipped if socat is missing

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220901110414.2892954-1-marcandre.lureau@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

hw/loongarch: Support fw_cfg dma function

Support fw_cfg dma function for LoongArch virt machine.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-3-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

hw/loongarch: Remove vga device when loongarch init

Remove the vga device when loongarch machine init and
we will support other display device in the future.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-2-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>

tests/tcg: i386: fix typos in 3DNow! instructions

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests: unit: add NULL-pointer check

In CID 1432593, Coverity complains that the result of qdict_crumple()
might leak if it is not a dictionary.  This is not a practical concern
since the test would fail immediately with a NULL pointer dereference
in qdict_size().

However, it is not nice to depend on qdict_size() crashing, so add an
explicit assertion that that the crumpled object was indeed a dictionary.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests: test-qga: close socket on failure to connect

Reported by Coverity as CID 1432543.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests: unit: simplify test-visitor-serialization list tests

test-visitor-serialization list tests is using an "if" to pick either the first
element of the list or the next one.  This was done presumably to mimic the
code that creates the list, which has to fill in either the head pointer
or the next pointer of the last element.  However, the code in the insert
phase is a pretty standard singly-linked list insertion, while the one
in the visit phase looks weird and even looks at the first item twice:
this is confusing because the test puts in 32 items and finishes with
an assertion that i == 33.

So, move the "else" step in a separate switch statement, and change
the do...while loop to a while, because cur_head has already been
initialized beforehand.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

smbios: sanitize type from external type before checking have_fields_bitmap

test_bit uses header->type as an offset; if the file incorrectly specifies a
type greater than 127, smbios_entry_add will read and write garbage.

To fix this, just pass the smbios data through, assuming the user knows what
to do.  Reported by Coverity as CID 1487255.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

coverity: put NUBus under m68k component

It is only used by the Q800 emulation, so put it under that architecture.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

coverity: add new RISC-V component

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

spapr_pci: fix leak in spapr_phb_vfio_get_loc_code

Overwriting "path" in the second call to g_strdup_printf() causes a memory leak,
even if the variable itself is g_autofree.

Reported by Coverity as CID 1460454.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

kvm: fix memory leak on failure to read stats descriptors

Reported by Coverity as CID 1490142.  Since the size is constant and the
lifetime is the same as the StatsDescriptors struct, embed the struct
directly instead of using a separate allocation.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386: Raise #GP on unaligned m128 accesses when required.

Many instructions which load/store 128-bit values are supposed to
raise #GP when the memory operand isn't 16-byte aligned. This includes:
 - Instructions explicitly requiring memory alignment (Exceptions Type 1
   in the "AVX and SSE Instruction Exception Specification" section of
   the SDM)
 - Legacy SSE instructions that load/store 128-bit values (Exceptions
   Types 2 and 4).

This change sets MO_ALIGN_16 on 128-bit memory accesses that require
16-byte alignment. It adds cpu_record_sigbus and cpu_do_unaligned_access
hooks that simulate a #GP exception in qemu-user and qemu-system,
respectively.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/217
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ricky Zhou <ricky@rzhou.org>
Message-Id: <20220830034816.57091-2-ricky@rzhou.org>
[Do not bother checking PREFIX_VEX, since AVX is not supported. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

KVM: use store-release to mark dirty pages as harvested

The following scenario can happen if QEMU sets more RESET flags while
the KVM_RESET_DIRTY_RINGS ioctl is ongoing on another host CPU:

    CPU0                     CPU1               CPU2
    ------------------------ ------------------ ------------------------
                                                fill gfn0
                                                store-rel flags for gfn0
                                                fill gfn1
                                                store-rel flags for gfn1
    load-acq flags for gfn0
    set RESET for gfn0
    load-acq flags for gfn1
    set RESET for gfn1
    do ioctl! ----------->
                             ioctl(RESET_RINGS)
                                                fill gfn2
                                                store-rel flags for gfn2
    load-acq flags for gfn2
    set RESET for gfn2
                             process gfn0
                             process gfn1
                             process gfn2
    do ioctl!
    etc.

The three load-acquire in CPU0 synchronize with the three store-release
in CPU2, but CPU0 and CPU1 are only synchronized up to gfn1 and CPU1
may miss gfn2's fields other than flags.

The kernel must be able to cope with invalid values of the fields, and
userspace *will* invoke the ioctl once more.  However, once the RESET flag
is cleared on gfn2, it is lost forever, therefore in the above scenario
CPU1 must read the correct value of gfn2's fields.

Therefore RESET must be set with a store-release, that will synchronize
with KVM's load-acquire in CPU1.

Cc: Gavin Shan <gshan@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Merge tag 'pull-hmp-20220915a' of https://gitlab.com/dagrh/qemu into staging

HMP pull 2022-09-15

A set of 3 small additions/fixes.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* tag 'pull-hmp-20220915a' of https://gitlab.com/dagrh/qemu:
  hmp: Fix ordering of text
  monitor/hmp: print trace as option in help for log command
  monitor: Support specified vCPU registers

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'pull-semi-20220914' of https://gitlab.com/rth7680/qemu into staging

Convert m68k to semihosting/syscalls.h.
Convert nios2 to semihosting/syscalls.h.
Allow optional use of semihosting from userspace.

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# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
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* tag 'pull-semi-20220914' of https://gitlab.com/rth7680/qemu:
  target/riscv: Honour -semihosting-config userspace=on and enable=on
  target/xtensa: Honour -semihosting-config userspace=on
  target/nios2: Honour -semihosting-config userspace=on
  target/mips: Honour -semihosting-config userspace=on
  target/m68k: Honour -semihosting-config userspace=on
  target/arm: Honour -semihosting-config userspace=on
  semihosting: Allow optional use of semihosting from userspace
  target/m68k: Convert semihosting errno to gdb remote errno
  target/m68k: Use semihosting/syscalls.h
  target/nios2: Convert semihosting errno to gdb remote errno
  target/nios2: Use semihosting/syscalls.h

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'pull-arm-20220914' of https://gitlab.com/rth7680/qemu into staging

Add cortex-a35.
Fix bcm2835 framebuffer for rpi firmware.
Add FEAT_ETS.
Add FEAT_PMUv3p5.
Cleanups to armv7m_load_kernel.

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* tag 'pull-arm-20220914' of https://gitlab.com/rth7680/qemu:
  target/arm: Make boards pass base address to armv7m_load_kernel()
  target/arm: Remove useless TARGET_BIG_ENDIAN check in armv7m_load_kernel()
  target/arm: Report FEAT_PMUv3p5 for TCG '-cpu max'
  target/arm: Support 64-bit event counters for FEAT_PMUv3p5
  target/arm: Implement FEAT_PMUv3p5 cycle counter disable bits
  target/arm: Rename pmu_8_n feature test functions
  target/arm: Detect overflow when calculating next PMU interrupt
  target/arm: Honour MDCR_EL2.HPMD in Secure EL2
  target/arm: Ignore PMCR.D when PMCR.LC is set
  target/arm: Don't mishandle count when enabling or disabling PMU counters
  target/arm: Correct value returned by pmu_counter_mask()
  target/arm: Don't corrupt high half of PMOVSR when cycle counter overflows
  target/arm: Add missing space in comment
  target/arm: Advertise FEAT_ETS for '-cpu max'
  target/arm: Implement ID_DFR1
  target/arm: Implement ID_MMFR5
  target/arm: Sort KVM reads of AArch32 ID registers into encoding order
  target/arm: Make cpregs 0, c0, c{3-15}, {0-7} correctly RAZ in v8
  hw/arm/bcm2835_property: Add support for RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS
  target/arm: Add cortex-a35

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'tpm-pull-2022-09-13-1' of https://github.com/stefanberger/qemu-tpm into staging

Merge tpm 2022/09/13 v1

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* tag 'tpm-pull-2022-09-13-1' of https://github.com/stefanberger/qemu-tpm:
  tpm_emulator: Have swtpm relock storage upon migration fall-back
  tpm_emulator: Use latest tpm_ioctl.h from swtpm project
  tpm_crb: Avoid backend startup just before shutdown under Xen
  tpm_emulator: Avoid double initialization during migration

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

hmp: Fix ordering of text

Fix the ordering of the help text so it's always after the commands
being defined.  A few had got out of order.  Keep 'info' at the end.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

monitor/hmp: print trace as option in help for log command

The below is printed when printing help information in qemu-system-x86_64
command line, and when CONFIG_TRACE_LOG is enabled:

----------------------------
$ qemu-system-x86_64 -d help
... ...
trace:PATTERN   enable trace events

Use "-d trace:help" to get a list of trace events.
----------------------------

However, the options of "trace:PATTERN" are only printed by
"qemu-system-x86_64 -d help", but missing in hmp "help log" command.

Fixes: c84ea00dc2 ("log: add "-d trace:PATTERN"")
Cc: Joe Jin <joe.jin@oracle.com>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Message-Id: <20220831213943.8155-1-dongli.zhang@oracle.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

monitor: Support specified vCPU registers

Originally we have to get all the vCPU registers and parse the
specified one. To improve the performance of this usage, allow user
specified vCPU id to query registers.

Run a VM with 16 vCPU, use bcc tool to track the latency of
'hmp_info_registers':
'info registers -a' uses about 3ms;
'info registers 12' uses about 150us.

Cc: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-Id: <20220802073720.1236988-2-pizhenwei@bytedance.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

target/arm: Make boards pass base address to armv7m_load_kernel()

Currently armv7m_load_kernel() takes the size of the block of memory
where it should load the initial guest image, but assumes that it
should always load it at address 0.  This happens to be true of all
our M-profile boards at the moment, but it isn't guaranteed to always
be so: M-profile CPUs can be configured (via init-svtor and
init-nsvtor, which match equivalent hardware configuration signals)
to have the initial vector table at any address, not just zero.  (For
instance the Teeny board has the boot ROM at address 0x0200_0000.)

Add a base address argument to armv7m_load_kernel(), so that
callers now pass in both base address and size. All the current
callers pass 0, so this is not a behaviour change.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220823160417.3858216-3-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Remove useless TARGET_BIG_ENDIAN check in armv7m_load_kernel()

Arm system emulation targets always have TARGET_BIG_ENDIAN clear, so
there is no need to have handling in armv7m_load_kernel() for the
case when it is defined.  Remove the unnecessary code.

Side notes:
 * our M-profile implementation is always little-endian (that is, it
   makes the IMPDEF choice that the read-only AIRCR.ENDIANNESS is 0)
 * if we did want to handle big-endian ELF files here we should do it
   the way that hw/arm/boot.c:arm_load_elf() does, by looking at the
   ELF header to see what endianness the file itself is

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220823160417.3858216-2-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Report FEAT_PMUv3p5 for TCG '-cpu max'

Update the ID registers for TCG's '-cpu max' to report a FEAT_PMUv3p5
compliant PMU.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-11-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Support 64-bit event counters for FEAT_PMUv3p5

With FEAT_PMUv3p5, the event counters are now 64 bit, rather than 32
bit.  (Previously, only the cycle counter could be 64 bit, and other
event counters were always 32 bits).  For any given event counter,
whether the overflow event is noted for overflow from bit 31 or from
bit 63 is controlled by a combination of PMCR.LP, MDCR_EL2.HLP and
MDCR_EL2.HPMN.

Implement the 64-bit event counter handling.  We choose to make our
counters always 64 bits, and mask out the top 32 bits on read or
write of PMXEVCNTR for CPUs which don't have FEAT_PMUv3p5.

(Note that the changes to pmenvcntr_op_start() and
pmenvcntr_op_finish() bring their logic closer into line with that of
pmccntr_op_start() and pmccntr_op_finish(), which already had to cope
with the overflow being either at 32 or 64 bits.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-10-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Implement FEAT_PMUv3p5 cycle counter disable bits

FEAT_PMUv3p5 introduces new bits which disable the cycle
counter from counting:
 * MDCR_EL2.HCCD disables the counter when in EL2
 * MDCR_EL3.SCCD disables the counter when Secure

Add the code to support these bits.

(Note that there is a third documented counter-disable
bit, MDCR_EL3.MCCD, which disables the counter when in
EL3. This is not present until FEAT_PMUv3p7, so is
out of scope for now.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-9-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Rename pmu_8_n feature test functions

Our feature test functions that check the PMU version are named
isar_feature_{aa32,aa64,any}_pmu_8_{1,4}.  This doesn't match the
current Arm ARM official feature names, which are FEAT_PMUv3p1 and
FEAT_PMUv3p4.  Rename these functions to _pmuv3p1 and _pmuv3p4.

This commit was created with:
  sed -i -e 's/pmu_8_/pmuv3p/g' target/arm/*.[ch]

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-8-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Detect overflow when calculating next PMU interrupt

In pmccntr_op_finish() and pmevcntr_op_finish() we calculate the next
point at which we will get an overflow and need to fire the PMU
interrupt or set the overflow flag.  We do this by calculating the
number of nanoseconds to the overflow event and then adding it to
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL).  However, we don't check
whether that signed addition overflows, which can happen if the next
PMU interrupt would happen massively far in the future (250 years or
more).

Since QEMU assumes that "when the QEMU_CLOCK_VIRTUAL rolls over" is
"never", the sensible behaviour in this situation is simply to not
try to set the timer if it would be beyond that point.  Detect the
overflow, and skip setting the timer in that case.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-7-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Honour MDCR_EL2.HPMD in Secure EL2

The logic in pmu_counter_enabled() for handling the 'prohibit event
counting' bits MDCR_EL2.HPMD and MDCR_EL3.SPME is written in a way
that assumes that EL2 is never Secure.  This used to be true, but the
architecture now permits Secure EL2, and QEMU can emulate this.

Refactor the prohibit logic so that we effectively OR together
the various prohibit bits when they apply, rather than trying to
construct an if-else ladder where any particular state of the CPU
ends up in exactly one branch of the ladder.

This fixes the Secure EL2 case and also is a better structure for
adding the PMUv8.5 bits MDCR_EL2.HCCD and MDCR_EL3.SCCD.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-6-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Ignore PMCR.D when PMCR.LC is set

The architecture requires that if PMCR.LC is set (for a 64-bit cycle
counter) then PMCR.D (which enables the clock divider so the counter
ticks every 64 cycles rather than every cycle) should be ignored.  We
were always honouring PMCR.D; fix the bug so we correctly ignore it
in this situation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-5-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Don't mishandle count when enabling or disabling PMU counters

The PMU cycle and event counter infrastructure design requires that
operations on the PMU register fields are wrapped in pmu_op_start()
and pmu_op_finish() calls (or their more specific pmmcntr and
pmevcntr equivalents).  This includes any changes to registers which
affect whether the counter should be enabled or disabled, but we
forgot to do this.

The effect of this bug is that in sequences like:
 * disable the cycle counter (PMCCNTR) using the PMCNTEN register
 * write a value such as 0xfffff000 to the PMCCNTR
 * restart the counter by writing to PMCNTEN
the value written to the cycle counter is corrupted, and it starts
counting from the wrong place. (Essentially, we fail to record that
the QEMU_CLOCK_VIRTUAL timestamp when the counter should be considered
to have started counting is the point when PMCNTEN is written to enable
the counter.)

Add the necessary bracketing calls, so that updates to the various
registers which affect whether the PMU is counting are handled
correctly.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-4-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Correct value returned by pmu_counter_mask()

pmu_counter_mask() accidentally returns a value with bits [63:32]
set, because the expression it returns is evaluated as a signed value
that gets sign-extended to 64 bits.  Force the whole expression to be
evaluated with 64-bit arithmetic with ULL suffixes.

The main effect of this bug was that a guest could write to the bits
in the high half of registers like PMCNTENSET_EL0 that are supposed
to be RES0.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-3-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Don't corrupt high half of PMOVSR when cycle counter overflows

When the cycle counter overflows, we are intended to set bit 31 in PMOVSR
to indicate this. However a missing ULL suffix means that we end up
setting all of bits 63-31. Fix the bug.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-2-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Add missing space in comment

Fix a missing space before a comment terminator.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220819110052.2942289-7-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Advertise FEAT_ETS for '-cpu max'

The architectural feature FEAT_ETS (Enhanced Translation
Synchronization) is a set of tightened guarantees about memory
ordering involving translation table walks:

 * if memory access RW1 is ordered-before memory access RW2 then it
   is also ordered-before any translation table walk generated by RW2
   that generates a translation fault, address size fault or access
   fault

 * TLB maintenance on non-exec-permission translations is guaranteed
   complete after a DSB (ie it does not need the context
   synchronization event that you have to have if you don’t have
   FEAT_ETS)

For QEMU’s implementation we don’t reorder translation table walk
accesses, and we guarantee to finish the TLB maintenance as soon as
the TLB op is done (the tlb_flush functions will complete at the end
of the TLB, and TLB ops always end the TB because they’re sysreg
writes).

So we’re already compliant and all we need to do is say so in the ID
registers for the 'max' CPU.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220819110052.2942289-6-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Implement ID_DFR1

In Armv8.6, a new AArch32 ID register ID_DFR1 is defined; implement
it. We don't have any CPUs with features that they need to advertise
here yet, but plumbing in the ID register gives it the right name
when debugging and will help in future when we do add a CPU that
has non-zero ID_DFR1 fields.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220819110052.2942289-5-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Implement ID_MMFR5

In Armv8.6 a new AArch32 ID register ID_MMFR5 is defined.
Implement this; we want to be able to use it to report to
the guest that we implement FEAT_ETS.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220819110052.2942289-4-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Sort KVM reads of AArch32 ID registers into encoding order

The code that reads the AArch32 ID registers from KVM in
kvm_arm_get_host_cpu_features() does so almost but not quite in
encoding order.  Move the read of ID_PFR2 down so it's really in
encoding order.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220819110052.2942289-3-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Make cpregs 0, c0, c{3-15}, {0-7} correctly RAZ in v8

In the AArch32 ID register scheme, coprocessor registers with
encoding cp15, 0, c0, c{0-7}, {0-7} are all in the space covered by
what in v6 and v7 was called the "CPUID scheme", and are supposed to
RAZ if they're not allocated to a specific ID register.  For our
pre-v8 CPUs we get this right, because the regdefs in
id_pre_v8_midr_cp_reginfo[] cover these RAZ requirements.  However
for v8 we failed to put in the necessary patterns to cover this, so
we end up UNDEFing on everything we didn't have an ID register for.
This is a problem because in Armv8 some encodings in 0, c0, c3, {0-7}
are now being used for new ID registers, and guests might thus start
trying to read them.  (We already have one of these: ID_PFR2.)

For v8 CPUs, we already have regdefs for 0, c0, c{0-2}, {0-7} (that
is, the space is completely allocated with no reserved spaces).  Add
entries to v8_idregs[] covering 0, c0, c3, {0-7}:
 * c3, {0-2} is the reserved AArch32 space corresponding to the
   AArch64 MVFR[012]_EL1
 * c3, {3,5,6,7} are reserved RAZ for both AArch32 and AArch64
   (in fact some of these are given defined meanings in Armv8.6,
   but we don't implement them yet)
 * c3, 4 is ID_PFR2 (already defined)

We then programmatically add RAZ patterns for AArch32 for
0, c0, c{4..15}, {0-7}:
 * c4-c7 are unused, and not shared with AArch64 (these
   are the encodings corresponding to where the AArch64
   specific ID registers live in the system register space)
 * c8-c15 weren't required to RAZ in v6/v7, but v8 extends
   the AArch32 reserved-should-RAZ space to cover these;
   the equivalent area of the AArch64 sysreg space is not
   defined as must-RAZ

Note that the architecture allows some registers in this space
to return an UNKNOWN value; we always return 0.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220819110052.2942289-2-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

hw/arm/bcm2835_property: Add support for RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS

In more recent Raspbian OS Linux kernels, the fb driver gives up
immediately if RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS fails or no
displays are reported.

This change simply always reports one display. It makes bcm2835_fb work
again with these more recent kernels.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Enrik Berkhan <Enrik.Berkhan@inka.de>
Message-Id: <20220812143519.59134-1-Enrik.Berkhan@inka.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Add cortex-a35

Add cortex A35 core and enable it for virt board.

Signed-off-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Joe Komlodi <komlodi@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220819002015.1663247-1-wuhaotsh@google.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/riscv: Honour -semihosting-config userspace=on and enable=on

The riscv target incorrectly enabled semihosting always, whether the
user asked for it or not.  Call semihosting_enabled() passing the
correct value to the is_userspace argument, which fixes this and also
handles the userspace=on argument.  Because we do this at translate
time, we no longer need to check the privilege level in
riscv_cpu_do_interrupt().

Note that this is a behaviour change: we used to default to
semihosting being enabled, and now the user must pass
"-semihosting-config enable=on" if they want it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220822141230.3658237-8-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/xtensa: Honour -semihosting-config userspace=on

Honour the commandline -semihosting-config userspace=on option,
instead of always permitting userspace semihosting calls in system
emulation mode, by passing the correct value to the is_userspace
argument of semihosting_enabled().

Note that this is a behaviour change: if the user wants to
do semihosting calls from userspace they must now specifically
enable them on the command line.

xtensa semihosting is not implemented for linux-user builds.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-7-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/nios2: Honour -semihosting-config userspace=on

Honour the commandline -semihosting-config userspace=on option,
instead of always permitting userspace semihosting calls in system
emulation mode, by passing the correct value to the is_userspace
argument of semihosting_enabled().

Note that this is a behaviour change: if the user wants to
do semihosting calls from userspace they must now specifically
enable them on the command line.

nios2 semihosting is not implemented for linux-user builds.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-6-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/mips: Honour -semihosting-config userspace=on

Honour the commandline -semihosting-config userspace=on option,
instead of always permitting userspace semihosting calls in system
emulation mode, by passing the correct value to the is_userspace
argument of semihosting_enabled().

Note that this is a behaviour change: if the user wants to
do semihosting calls from userspace they must now specifically
enable them on the command line.

MIPS semihosting is not implemented for linux-user builds.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-5-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/m68k: Honour -semihosting-config userspace=on

Honour the commandline -semihosting-config userspace=on option,
instead of never permitting userspace semihosting calls in system
emulation mode, by passing the correct value to the is_userspace
argument of semihosting_enabled(), instead of manually checking and
always forbidding semihosting if the guest is in userspace.

(Note that target/m68k doesn't support semihosting at all
in the linux-user build.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-4-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Honour -semihosting-config userspace=on

Honour the commandline -semihosting-config userspace=on option,
instead of never permitting userspace semihosting calls in system
emulation mode, by passing the correct value to the is_userspace
argument of semihosting_enabled(), instead of manually checking and
always forbidding semihosting if the guest is in userspace and this
isn't the linux-user build.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-3-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

semihosting: Allow optional use of semihosting from userspace

Currently our semihosting implementations generally prohibit use of
semihosting calls in system emulation from the guest userspace.  This
is a very long standing behaviour justified originally "to provide
some semblance of security" (since code with access to the
semihosting ABI can do things like read and write arbitrary files on
the host system).  However, it is sometimes useful to be able to run
trusted guest code which performs semihosting calls from guest
userspace, notably for test code.  Add a command line suboption to
the existing semihosting-config option group so that you can
explicitly opt in to semihosting from guest userspace with
 -semihosting-config userspace=on

(There is no equivalent option for the user-mode emulator, because
there by definition all code runs in userspace and has access to
semihosting already.)

This commit adds the infrastructure for the command line option and
adds a bool 'is_user' parameter to the function
semihosting_userspace_enabled() that target code can use to check
whether it should be permitting the semihosting call for userspace.
It mechanically makes all the callsites pass 'false', so they
continue checking "is semihosting enabled in general".  Subsequent
commits will make each target that implements semihosting honour the
userspace=on option by passing the correct value and removing
whatever "don't do this for userspace" checking they were doing by
hand.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-2-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/m68k: Convert semihosting errno to gdb remote errno

The semihosting abi used by m68k uses the gdb remote
protocol filesys errnos.

Acked-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/m68k: Use semihosting/syscalls.h

This separates guest file descriptors from host file descriptors,
and utilizes shared infrastructure for integration with gdbstub.

Acked-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/nios2: Convert semihosting errno to gdb remote errno

The semihosting abi used by nios2 uses the gdb remote
protocol filesys errnos.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/nios2: Use semihosting/syscalls.h

This separates guest file descriptors from host file descriptors,
and utilizes shared infrastructure for integration with gdbstub.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tpm_emulator: Have swtpm relock storage upon migration fall-back

Swtpm may release the lock once the last one of its state blobs has been
migrated out. In case of VM migration failure QEMU now needs to notify
swtpm that it should again take the lock, which it can otherwise only do
once it has received the first TPM command from the VM.

Only try to send the lock command if swtpm supports it. It will not have
released the lock (and support shared storage setups) if it doesn't
support the locking command since the functionality of releasing the lock
upon state blob reception and the lock command were added to swtpm
'together'.

If QEMU sends the lock command and the storage has already been locked
no error is reported.

If swtpm does not receive the lock command (from older version of QEMU),
it will lock the storage once the first TPM command has been received. So
sending the lock command is an optimization.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20220912174741.1542330-3-stefanb@linux.ibm.com

tpm_emulator: Use latest tpm_ioctl.h from swtpm project

Use the latest tpm_ioctl.h from upstream swtpm project.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20220912174741.1542330-2-stefanb@linux.ibm.com

tpm_crb: Avoid backend startup just before shutdown under Xen

When running under Xen and the guest reboots, it boots into a new domain
with a new QEMU process (and a new swtpm process if using the emulator
backend). The existing reset function is triggered just before the old
QEMU process exists which causes QEMU to startup the TPM backend and
then immediately shut it down. This is probably harmless but when using
the emulated backend, it wastes CPU and IO time reloading state, etc.

Fix this by calling the reset function directly from realize() when
running under Xen. During a reboot, this will be called by the QEMU
process for the new domain.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Message-id: 20220826143841.1515326-1-ross.lagerwall@citrix.com
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

tpm_emulator: Avoid double initialization during migration

When resuming after a migration, the backend sends CMD_INIT to the
emulator from the startup callback, then it sends the migration state
from the vmstate to the emulator, then it sends CMD_INIT again. Skip the
first CMD_INIT during a migration to avoid initializing the TPM twice.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

Merge tag 'pull-qapi-2022-09-07' of git://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2022-09-07

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# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
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# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2022-09-07' of git://repo.or.cz/qemu/armbru:
  qapi: fix examples of events missing timestamp
  qapi: fix example of query-hotpluggable-cpus command
  qapi: fix examples of blockdev-add with qcow2
  qapi: fix example of MEM_UNPLUG_ERROR event
  qapi: fix example of DEVICE_UNPLUG_GUEST_ERROR event
  qapi: fix example of NIC_RX_FILTER_CHANGED event
  qapi: fix example of BLOCK_JOB_READY event
  qapi: fix example of query-dump-guest-memory-capability command
  qapi: fix example of query-vnc command
  qapi: fix example of query-ballon command

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

qapi: fix examples of events missing timestamp

I've used real timestamp and changing them one by one so they would
not be all equal.

Problem was noticed when using the example as a test case for Go
bindings.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-11-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of query-hotpluggable-cpus command

The example return type has the wrong member name. Fix it.

Problem was noticed when using the example as a test case for Go
bindings.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-10-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix examples of blockdev-add with qcow2

The examples use "qcow2" driver with the wrong member name for
BlockdevRef alternate type. This patch changes all wrong member names
from "file" to "data-file" which is the correct member name in
BlockdevOptionsQcow2 for the BlockdevRef field.

Problem was noticed when using the example as a test case for Go
bindings.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-9-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of MEM_UNPLUG_ERROR event

Example output was missing ',' delimiter. Fix it.

Problem was noticed when trying to load the example into python's json
library.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-8-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of DEVICE_UNPLUG_GUEST_ERROR event

Example output is missing a ',' delimiter and it has an extra ending
curly bracket. Fix it.

Problem was noticed when trying to load the example into python's json
library.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-7-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of NIC_RX_FILTER_CHANGED event

Example output has an extra ending curly bracket. Fix it.

Problem was noticed when trying to load the example into python's json
library.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-6-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of BLOCK_JOB_READY event

Example output is missing ',' delimiter. Fix it.

Problem was noticed when trying to load the example into python's json
library.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-5-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of query-dump-guest-memory-capability command

Example output is missing closing curly brackets. Fix it.

Problem was noticed when trying to load the example into python's json
library.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-4-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: fix example of query-vnc command

Example output has an extra ',' delimiter in member "websocket" and it
lacks it in "family" member. Fix it.

Problem was noticed when trying to load the example into python's json
library.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-3-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>