Merge tag 'accel-cpus-20250309' of https://github.com/philmd/qemu into staging

Generic CPUs / accelerators patch queue

- Reduce "exec/tb-flush.h" inclusion on linux-user
- Consider alignment in bsd

Merge tag 'accel-cpus-20250309' of https://github.com/philmd/qemu into staging

Generic CPUs / accelerators patch queue

- Reduce "exec/tb-flush.h" inclusion on linux-user
- Consider alignment in bsd-user's mmap_find_vma()
- Unify MMAP common user emulation API
- Simplify cpu-target.c further
- Prefer cached CpuClass over CPU_GET_CLASS() macro
- Restrict CPU has_work() handlers to system emulation
- Consolidate core exec/vCPU section in MAINTAINERS

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# Primary key fingerprint: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE

* tag 'accel-cpus-20250309' of https://github.com/philmd/qemu: (38 commits)
MAINTAINERS: Consolidate core exec/vCPU handling section
cpus: Remove CPUClass::has_work() handler
target/xtensa: Move has_work() from CPUClass to SysemuCPUOps
target/tricore: Move has_work() from CPUClass to SysemuCPUOps
target/sparc: Move has_work() from CPUClass to SysemuCPUOps
target/sh4: Move has_work() from CPUClass to SysemuCPUOps
target/s390x: Move has_work() from CPUClass to SysemuCPUOps
target/s390x: Restrict I/O handler installers to system emulation
target/rx: Move has_work() from CPUClass to SysemuCPUOps
target/riscv: Move has_work() from CPUClass to SysemuCPUOps
target/ppc: Move has_work() from CPUClass to SysemuCPUOps
target/openrisc: Move has_work() from CPUClass to SysemuCPUOps
target/mips: Move has_work() from CPUClass to SysemuCPUOps
target/microblaze: Move has_work() from CPUClass to SysemuCPUOps
target/m68k: Move has_work() from CPUClass to SysemuCPUOps
target/loongarch: Move has_work() from CPUClass to SysemuCPUOps
target/i386: Move has_work() from CPUClass to SysemuCPUOps
target/hppa: Move has_work() from CPUClass to SysemuCPUOps
target/hexagon: Remove CPUClass:has_work() handler
target/avr: Move has_work() from CPUClass to SysemuCPUOps
...

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

show more ...

gdbstub: Prefer cached CpuClass over CPU_GET_CLASS() macro

CpuState caches its CPUClass since commit 6fbdff87062
("cpu: cache CPUClass in CPUState for hot code paths"),
use it.

Signed-off-by: Phili

gdbstub: Prefer cached CpuClass over CPU_GET_CLASS() macro

CpuState caches its CPUClass since commit 6fbdff87062
("cpu: cache CPUClass in CPUState for hot code paths"),
use it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250122093028.52416-9-philmd@linaro.org>

show more ...

Merge tag 'pull-10.0-testing-and-gdstub-updates-100225-1' of https://gitlab.com/stsquad/qemu into staging

testing and gdbstub updates:

- add a check-rust test to docker builds
- re-factor the q

Merge tag 'pull-10.0-testing-and-gdstub-updates-100225-1' of https://gitlab.com/stsquad/qemu into staging

testing and gdbstub updates:

- add a check-rust test to docker builds
- re-factor the qtest logic to be cleaner
- fix tests to not clock_step when no timers enabled
- roll-up log prefix into qtest_send
- cleaner error reporting when qtest_clock_set fails
- revert old deadlock fix now tests are updated
- only run full set of migration tests under HW acceleration
- support late attachment to user-mode gdbstubs

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# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-10.0-testing-and-gdstub-updates-100225-1' of https://gitlab.com/stsquad/qemu:
tests/tcg: Add late gdbstub attach test
docs/user: Document the %d placeholder and suspend=n QEMU_GDB features
gdbstub: Allow late attachment
osdep: Introduce qemu_kill_thread()
user: Introduce host_interrupt_signal
user: Introduce user/signal.h
gdbstub: Try unlinking the unix socket before binding
gdbstub: Allow the %d placeholder in the socket path
tests/qtest/migration: Pick smoke tests
tests/qtest/migration: Add --full option
Revert "util/timer: avoid deadlock when shutting down"
tests/qtest: tighten up the checks on clock_step
tests/qtest: rename qtest_send_prefix and roll-up into qtest_send
tests/qtest: simplify qtest_process_inbuf
tests/qtest: don't step clock at start of npcm7xx periodic IRQ test
tests/qtest: don't attempt to clock_step while waiting for virtio ISR
tests/docker: replicate the check-rust-tools-nightly CI job

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

show more ...

gdbstub: Allow late attachment

Allow debugging individual processes in multi-process applications by
starting them with export QEMU_GDB=/tmp/qemu-%d.sock,suspend=n.
Currently one would have to attac

gdbstub: Allow late attachment

Allow debugging individual processes in multi-process applications by
starting them with export QEMU_GDB=/tmp/qemu-%d.sock,suspend=n.
Currently one would have to attach to every process to ensure the app
makes progress.

In case suspend=n is not specified, the flow remains unchanged. If it
is specified, then accepting the client connection is delegated to a
thread. In the future this machinery may be reused for handling
reconnections and interruptions.

On accepting a connection, the thread schedules gdb_handlesig() on the
first CPU and wakes it up with host_interrupt_signal. Note that the
result of this gdb_handlesig() invocation is handled, as opposed to
many other existing call sites. These other call sites probably need to
be fixed separately.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20250117001542.8290-7-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250207153112.3939799-16-alex.bennee@linaro.org>

show more ...

gdbstub: Try unlinking the unix socket before binding

In case an emulated process execve()s another emulated process, bind()
will fail, because the socket already exists. So try deleting it. Use
the

gdbstub: Try unlinking the unix socket before binding

In case an emulated process execve()s another emulated process, bind()
will fail, because the socket already exists. So try deleting it. Use
the existing unix_listen() function which does this. Link qemu-user
with qemu-sockets.c and add the monitor_get_fd() stub.

Note that it is not possible to handle this in do_execv(): deleting
gdbserver_user_state.socket_path before safe_execve() is not correct,
because the latter may fail, and afterwards we may lose control.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250117001542.8290-3-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250207153112.3939799-12-alex.bennee@linaro.org>

show more ...

gdbstub: Allow the %d placeholder in the socket path

Just like for QEMU_LOG_FILENAME, replace %d with PID in the GDB socket
path. This allows running multi-process applications with, e.g.,
export QE

gdbstub: Allow the %d placeholder in the socket path

Just like for QEMU_LOG_FILENAME, replace %d with PID in the GDB socket
path. This allows running multi-process applications with, e.g.,
export QEMU_GDB=/tmp/qemu-%d.sock. Currently this is not possible,
since the first process will cause the subsequent ones to fail due to
not being able to bind() the GDB socket.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20250117001542.8290-2-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250207153112.3939799-11-alex.bennee@linaro.org>

show more ...

Merge tag 'pull-10.0-gdb-plugins-doc-updates-170125-1' of https://gitlab.com/stsquad/qemu into staging

semihosting, plugin and doc updates:

- log a guest_error for failed semihosting open()
- c

Merge tag 'pull-10.0-gdb-plugins-doc-updates-170125-1' of https://gitlab.com/stsquad/qemu into staging

semihosting, plugin and doc updates:

- log a guest_error for failed semihosting open()
- clean up semihosting includes to reduce build duplication
- re-factor misc device initialisation to fail with &error_exit
- propagate Error * to gdbserver_start sub-functions
- fix 32-bit build of plugins and re-enable by default
- ensure IRQs don't preempt io recompiled instructions
- remove usage of gcc_struct to enable clang builds
- enable clang/lld to build plugins on windows
- various small kdoc typo fixes
- add perl scripts to editorconfig
- remove unused field from MemoryRegion
- make kdoc script a dependency so doc rebuilds get triggered
- expand developer documentation:
- notes on git-publish
- describe usage of b4
- setting up build dependencies
- codebase layout
- add a glossary of common terms
- optimise the windows ndis script

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# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-10.0-gdb-plugins-doc-updates-170125-1' of https://gitlab.com/stsquad/qemu: (37 commits)
scripts/nsis.py: Run dependency check for each DLL file only once
docs: add a glossary
docs/devel: add a codebase section
docs/devel: add information on how to setup build environments
docs/devel: add b4 for patch retrieval
docs/devel: add git-publish for patch submitting
docs/sphinx: include kernel-doc script as a dependency
include/exec: remove warning_printed from MemoryRegion
include/exec: fix some copy and paste errors in kdoc
tests/qtest: fix some copy and paste errors in kdoc
editorconfig: update for perl scripts
plugins: fix kdoc annotation
plugins: enable linking with clang/lld
docs/devel/style: add a section about bitfield, and disallow them for packed structures
win32: remove usage of attribute gcc_struct
accel/tcg: also suppress asynchronous IRQs for cpu_io_recompile
configure: reenable plugins by default for 32-bit hosts
contrib/plugins/hotpages: fix 32-bit build
contrib/plugins/hwprofile: fix 32-bit build
contrib/plugins/cflow: fix 32-bit build
...

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

show more ...

system: propagate Error to gdbserver_start (and other device setups)

This started as a clean-up to properly pass a Error handler to the
gdbserver_start so we could do the right thing for command lin

system: propagate Error to gdbserver_start (and other device setups)

This started as a clean-up to properly pass a Error handler to the
gdbserver_start so we could do the right thing for command line and
HMP invocations.

Now that we have cleaned up foreach_device_config_or_exit() in earlier
patches we can further simplify by it by passing &error_fatal instead
of checking the return value. Having a return value is still useful
for HMP though so tweak the return to use a simple bool instead.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-11-alex.bennee@linaro.org>

show more ...

Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial patches for 2024-09-20

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Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial patches for 2024-09-20

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# gpg: Signature made Fri 20 Sep 2024 08:30:29 BST
# gpg: using RSA key 64AA2AB531D56903366BFEF982AA4A243B1E9478
# gpg: Good signature from "Michael Tokarev <mjt@debian.org>" [full]
# gpg: aka "Michael Tokarev <mjt@corpit.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@tls.msk.ru>" [full]
# Primary key fingerprint: 9D8B E14E 3F2A 9DD7 9199 28F1 61AD 3D98 ECDF 2C8E
# Subkey fingerprint: 64AA 2AB5 31D5 6903 366B FEF9 82AA 4A24 3B1E 9478

* tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu: (22 commits)
license: Update deprecated SPDX tag GPL-2.0 to GPL-2.0-only
license: Update deprecated SPDX tag GPL-2.0+ to GPL-2.0-or-later
license: Update deprecated SPDX tag LGPL-2.0+ to LGPL-2.0-or-later
license: Simplify GPL-2.0-or-later license descriptions
tests/functional: Correct typo in test_netdev_ethtool.py SPDX tag
tests/bench: Rename test_akcipher_keys.inc -> test_akcipher_keys.c.inc
target/hexagon: Rename macros.inc -> macros.h.inc
tests/functional: Put the or1k_sim test into the slow category
tests/qemu-iotests/testenv: Use the "r2d" machine for sh4/sh4eb
tests/qemu-iotests/testenv: Use the "virt" machine for or1k
util/cutils: Remove unused qemu_get_exec_dir
hw/sysbus: Remove unused sysbus_mmio_unmap
envlist: Remove unused envlist_parse
hw/display: Fix mirrored output in dm163
hw/virtio/Kconfig: Include vhost-user-scmi only on arm targets
tests/unit: Really build pbkdf test on macOS
hw/loongarch/virt: Add description for virt machine type
hw/mips/jazz: fix typo in in-built NIC alias
ppc: fix incorrect spelling of PowerMac
linux-user/syscall.c: eliminate other explicit LFS usages
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

license: Update deprecated SPDX tag LGPL-2.0+ to LGPL-2.0-or-later

The 'LGPL-2.0+' license identifier has been deprecated since license
list version 2.0rc2 [1] and replaced by the 'LGPL-2.0-or-later

license: Update deprecated SPDX tag LGPL-2.0+ to LGPL-2.0-or-later

The 'LGPL-2.0+' license identifier has been deprecated since license
list version 2.0rc2 [1] and replaced by the 'LGPL-2.0-or-later' [2]
tag.

[1] https://spdx.org/licenses/LGPL-2.0+.html
[2] https://spdx.org/licenses/LGPL-2.0-or-later.html

Mechanical patch running:

$ sed -i -e s/LGPL-2.0+/LGPL-2.0-or-later/ \
$(git grep -l 'SPDX-License-Identifier: LGPL-2.0+$')

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

show more ...

Merge tag 'pull-maintainer-july24-050724-1' of https://gitlab.com/stsquad/qemu into staging

Updates for testing, plugins, gdbstub

- restore some 32 bit host builds and testing
- move some physm

Merge tag 'pull-maintainer-july24-050724-1' of https://gitlab.com/stsquad/qemu into staging

Updates for testing, plugins, gdbstub

- restore some 32 bit host builds and testing
- move some physmem tracepoint definitions
- use --userns keep-id for podman builds
- cleanup check-tcg compiler flag checking for Arm
- fix some casting in fcvt test
- tweak check-tcg inline asm for clang
- suppress some invalid clang warnings
- disable KVM for the TCI builds
- improve the insn tracking plugin
- cleanups to the lockstep plugin
- free plugin data on cpu finalise
- assert cpu->index assigned
- move qemu_plugin_vcpu_init__async into plugin code
- add support for dynamic gdb command tables
- allow targets to extend gdb capabilities
- enable user-mode MTE support

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# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]

* tag 'pull-maintainer-july24-050724-1' of https://gitlab.com/stsquad/qemu: (40 commits)
tests/tcg/aarch64: Add MTE gdbstub tests
gdbstub: Add support for MTE in user mode
gdbstub: Use true to set cmd_startswith
gdbstub: Pass CPU context to command handler
gdbstub: Make hex conversion function non-internal
target/arm: Factor out code for setting MTE TCF0 field
target/arm: Make some MTE helpers widely available
target/arm: Fix exception case in allocation_tag_mem_probe
gdbstub: Add support for target-specific stubs
gdbstub: Move GdbCmdParseEntry into a new header file
gdbstub: Clean up process_string_cmd
accel/tcg: Move qemu_plugin_vcpu_init__async() to plugins/
plugins: Free CPUPluginState before destroying vCPU state
plugins: Ensure vCPU index is assigned in init/exit hooks
plugins/lockstep: clean-up output
plugins/lockstep: mention the one-insn-per-tb option
plugins/lockstep: make mixed-mode safe
plugins/lockstep: preserve sock_path
test/plugins: preserve the instruction record over translations
test/plugin: make insn plugin less noisy by default
...

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

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gdbstub: Move GdbCmdParseEntry into a new header file

Move GdbCmdParseEntry and its associated types into a separate header
file to allow the use of GdbCmdParseEntry and other gdbstub command
functi

gdbstub: Move GdbCmdParseEntry into a new header file

Move GdbCmdParseEntry and its associated types into a separate header
file to allow the use of GdbCmdParseEntry and other gdbstub command
functions outside of gdbstub.c.

Since GdbCmdParseEntry and get_param are now public, kdoc
GdbCmdParseEntry and rename get_param to gdb_get_cmd_param.

This commit also makes gdb_put_packet public since is used in gdbstub
command handling.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240628050850.536447-3-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-32-alex.bennee@linaro.org>

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Merge tag 'pull-maintainer-june24-240624-1' of https://gitlab.com/stsquad/qemu into staging

maintainer updates (plugins, gdbstub):

- add missing include guard comment to gdbstub.h
- move gdbstu

Merge tag 'pull-maintainer-june24-240624-1' of https://gitlab.com/stsquad/qemu into staging

maintainer updates (plugins, gdbstub):

- add missing include guard comment to gdbstub.h
- move gdbstub enums into separate header
- move qtest_[get|set]_virtual_clock functions
- allow plugins to manipulate the virtual clock
- introduce an Instructions Per Second plugin
- fix inject_mem_cb rw mask tests
- allow qemu_plugin_vcpu_mem_cb to shortcut when no memory cbs

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# gpg: Signature made Mon 24 Jun 2024 02:19:54 AM PDT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]

* tag 'pull-maintainer-june24-240624-1' of https://gitlab.com/stsquad/qemu:
accel/tcg: Avoid unnecessary call overhead from qemu_plugin_vcpu_mem_cb
plugins: fix inject_mem_cb rw masking
contrib/plugins: add Instructions Per Second (IPS) example for cost modeling
plugins: add migration blocker
plugins: add time control API
qtest: move qtest_{get, set}_virtual_clock to accel/qtest/qtest.c
sysemu: generalise qtest_warp_clock as qemu_clock_advance_virtual_time
qtest: use cpu interface in qtest_clock_warp
sysemu: add set_virtual_time to accel ops
plugins: Ensure register handles are not NULL
gdbstub: move enums into separate header
include/exec: add missing include guard comment

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

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gdbstub: move enums into separate header

This is an experiment to further reduce the amount we throw into the
exec headers. It might not be as useful as I initially thought because
just under half o

gdbstub: move enums into separate header

This is an experiment to further reduce the amount we throw into the
exec headers. It might not be as useful as I initially thought because
just under half of the users also need gdbserver_start().

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240620152220.2192768-3-alex.bennee@linaro.org>

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Merge tag 'pull-maintainer-final-130324-1' of https://gitlab.com/stsquad/qemu into staging

final updates for 9.0 (testing, gdbstub):

- fix the over rebuilding of test VMs
- support Xfer:siginfo

Merge tag 'pull-maintainer-final-130324-1' of https://gitlab.com/stsquad/qemu into staging

final updates for 9.0 (testing, gdbstub):

- fix the over rebuilding of test VMs
- support Xfer:siginfo:read in gdbstub
- fix double close() in gdbstub

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# gpg: Signature made Wed 13 Mar 2024 11:45:01 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-maintainer-final-130324-1' of https://gitlab.com/stsquad/qemu:
gdbstub: Fix double close() of the follow-fork-mode socket
tests/tcg: Add multiarch test for Xfer:siginfo:read stub
gdbstub: Add Xfer:siginfo:read stub
gdbstub: Save target's siginfo
linux-user: Move tswap_siginfo out of target code
gdbstub: Rename back gdb_handlesig
tests/vm: ensure we build everything by default

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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gdbstub: Fix double close() of the follow-fork-mode socket

When the terminal GDB_FORK_ENABLED state is reached, the coordination
socket is not needed anymore and is therefore closed. However, if the

gdbstub: Fix double close() of the follow-fork-mode socket

When the terminal GDB_FORK_ENABLED state is reached, the coordination
socket is not needed anymore and is therefore closed. However, if there
is a communication error between QEMU gdbstub and GDB, the generic
error handling code attempts to close it again.

Fix by closing it later - before returning - instead.

Fixes: Coverity CID 1539966
Fixes: d547e711a8a5 ("gdbstub: Implement follow-fork-mode child")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240312001813.13720-1-iii@linux.ibm.com>

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gdbstub: Add Xfer:siginfo:read stub

Add stub to handle Xfer:siginfo:read packet query that requests the
machine's siginfo data.

This is used when GDB user executes 'print $_siginfo' and when the
ma

gdbstub: Add Xfer:siginfo:read stub

Add stub to handle Xfer:siginfo:read packet query that requests the
machine's siginfo data.

This is used when GDB user executes 'print $_siginfo' and when the
machine stops due to a signal, for instance, on SIGSEGV. The information
in siginfo allows GDB to determiner further details on the signal, like
the fault address/insn when the SIGSEGV is caught.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-Id: <20240309030901.1726211-5-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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gdbstub: Save target's siginfo

Save target's siginfo into gdbserver_state so it can be used later, for
example, in any stub that requires the target's si_signo and si_code.

This change affects only

gdbstub: Save target's siginfo

Save target's siginfo into gdbserver_state so it can be used later, for
example, in any stub that requires the target's si_signo and si_code.

This change affects only linux-user mode.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-4-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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gdbstub: Rename back gdb_handlesig

Rename gdb_handlesig_reason back to gdb_handlesig. There is no need to
add a wrapper for gdb_handlesig and rename it when a new parameter is
added.

Signed-off-by:

gdbstub: Rename back gdb_handlesig

Rename gdb_handlesig_reason back to gdb_handlesig. There is no need to
add a wrapper for gdb_handlesig and rename it when a new parameter is
added.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-2-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

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Merge tag 'pull-maintainer-updates-060324-1' of https://gitlab.com/stsquad/qemu into staging

maintainer updates (tests, gdbstub, plugins):

- expand QOS_PATH_MAX_ELEMENT_SIZE to avoid LTO issues

Merge tag 'pull-maintainer-updates-060324-1' of https://gitlab.com/stsquad/qemu into staging

maintainer updates (tests, gdbstub, plugins):

- expand QOS_PATH_MAX_ELEMENT_SIZE to avoid LTO issues
- support fork-follow-mode in gdbstub
- new thread-safe scoreboard API for TCG plugins
- suppress showing opcodes in plugin disassembly

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# gpg: Signature made Wed 06 Mar 2024 12:38:18 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-maintainer-updates-060324-1' of https://gitlab.com/stsquad/qemu: (29 commits)
target/riscv: honour show_opcodes when disassembling
target/loongarch: honour show_opcodes when disassembling
disas/hppa: honour show_opcodes
disas: introduce show_opcodes
plugins: cleanup codepath for previous inline operation
plugins: remove non per_vcpu inline operation from API
contrib/plugins/howvec: migrate to new per_vcpu API
contrib/plugins/hotblocks: migrate to new per_vcpu API
tests/plugin/bb: migrate to new per_vcpu API
tests/plugin/insn: migrate to new per_vcpu API
tests/plugin/mem: migrate to new per_vcpu API
tests/plugin: add test plugin for inline operations
plugins: add inline operation per vcpu
plugins: implement inline operation relative to cpu_index
plugins: define qemu_plugin_u64
plugins: scoreboard API
tests/tcg: Add two follow-fork-mode tests
gdbstub: Implement follow-fork-mode child
gdbstub: Introduce gdb_handle_detach_user()
gdbstub: Introduce gdb_handle_set_thread_user()
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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gdbstub: Implement follow-fork-mode child

Currently it's not possible to use gdbstub for debugging linux-user
code that runs in a forked child, which is normally done using the `set
follow-fork-mode

gdbstub: Implement follow-fork-mode child

Currently it's not possible to use gdbstub for debugging linux-user
code that runs in a forked child, which is normally done using the `set
follow-fork-mode child` GDB command. Purely on the protocol level, the
missing piece is the fork-events feature.

However, a deeper problem is supporting $Hg switching between different
processes - right now it can do only threads. Implementing this for the
general case would be quite complicated, but, fortunately, for the
follow-fork-mode case there are a few factors that greatly simplify
things: fork() happens in the exclusive section, there are only two
processes involved, and before one of them is resumed, the second one
is detached.

This makes it possible to implement a simplified scheme: the parent and
the child share the gdbserver socket, it's used only by one of them at
any given time, which is coordinated through a separate socketpair. The
processes can read from the gdbserver socket only one byte at a time,
which is not great for performance, but, fortunately, the
follow-fork-mode handling involves only a few messages.

Advertise the fork-events support, and remember whether GDB has it
as well. Implement the state machine that is initialized on fork(),
decides the current owner of the gdbserver socket, and is terminated
when one of the two processes is detached. The logic for the parent and
the child is the same, only the initial state is different.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-12-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-13-alex.bennee@linaro.org>

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gdbstub: Introduce gdb_handle_detach_user()

The upcoming follow-fork-mode child support needs to perform certain
actions when GDB detaches from the stopped parent or the stopped child.
Introduce a u

gdbstub: Introduce gdb_handle_detach_user()

The upcoming follow-fork-mode child support needs to perform certain
actions when GDB detaches from the stopped parent or the stopped child.
Introduce a user-specific hook for this.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-11-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-12-alex.bennee@linaro.org>

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gdbstub: Introduce gdb_handle_set_thread_user()

The upcoming follow-fork-mode child support needs to perform certain
actions when GDB switches between the stopped parent and the stopped
child. Intro

gdbstub: Introduce gdb_handle_set_thread_user()

The upcoming follow-fork-mode child support needs to perform certain
actions when GDB switches between the stopped parent and the stopped
child. Introduce a user-specific hook for this.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-10-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-11-alex.bennee@linaro.org>

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gdbstub: Introduce gdb_handle_query_supported_user()

The upcoming follow-fork-mode child support requires advertising the
fork-events feature, which is user-specific. Introduce a user-specific
hook

gdbstub: Introduce gdb_handle_query_supported_user()

The upcoming follow-fork-mode child support requires advertising the
fork-events feature, which is user-specific. Introduce a user-specific
hook for this.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-9-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-10-alex.bennee@linaro.org>

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gdbstub: Call gdbserver_fork() both in parent and in child

The upcoming follow-fork-mode child support requires post-fork message
exchange between the parent and the child. Prepare gdbserver_fork()

gdbstub: Call gdbserver_fork() both in parent and in child

The upcoming follow-fork-mode child support requires post-fork message
exchange between the parent and the child. Prepare gdbserver_fork() for
this purpose. Rename it to gdbserver_fork_end() to better reflect its
purpose.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240219141628.246823-8-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-9-alex.bennee@linaro.org>

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