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Author SHA1 Message Date
Pierrick BouvierandPhilippe Mathieu-Daudé 38838f0837 cpu-target: build compilation unit once for user/system 
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250730220519.1140447-2-pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
 2025-09-02 17:57:05 +02:00
Stefan Hajnoczi f96b157ebb Merge tag 'accel-20250715' of https://github.com/philmd/qemu into staging 
Accelerators patches

- Unify x86/arm hw/xen/arch_hvm.h header
- Move non-system-specific 'accel/accel-ops.h' and 'accel-cpu-ops.h' to accel/
- Move KVM definitions qapi/accelerator.json
- Add @qom-type field to CpuInfoFast QAPI structure
- Display CPU model name in 'info cpus' HMP command
- Introduce @x-accel-stats QMP command
- Add 'info accel' on HMP
- Improve qemu_add_vm_change_state_handler*() docstring
- Extract TCG statistic related code to tcg-stats.c
- Implement AccelClass::get_[vcpu]_stats() handlers for TCG and HVF
- Do not dump NaN in TCG statistics
- Revert incomplete "accel/tcg: Unregister the RCU before exiting RR thread"

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 # gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
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* tag 'accel-20250715' of https://github.com/philmd/qemu:
  system/runstate: Document qemu_add_vm_change_state_handler_prio* in hdr
  system/runstate: Document qemu_add_vm_change_state_handler()
  accel/hvf: Implement AccelClass::get_vcpu_stats() handler
  accel/tcg: Implement AccelClass::get_stats() handler
  accel/tcg: Propagate AccelState to dump_accel_info()
  accel/system: Add 'info accel' on human monitor
  accel/system: Introduce @x-accel-stats QMP command
  accel/tcg: Extract statistic related code to tcg-stats.c
  Revert "accel/tcg: Unregister the RCU before exiting RR thread"
  accel: Extract AccelClass definition to 'accel/accel-ops.h'
  accel: Rename 'system/accel-ops.h' -> 'accel/accel-cpu-ops.h'
  accel/tcg: Do not dump NaN statistics
  hw/core/machine: Display CPU model name in 'info cpus' command
  qapi/machine: Add @qom-type field to CpuInfoFast structure
  qapi/accel: Move definitions related to accelerators in their own file
  hw/arm/xen-pvh: Remove unnecessary 'hw/xen/arch_hvm.h' header
  hw/xen/arch_hvm: Unify x86 and ARM variants

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

Conflicts:
  qapi/machine.json
  Commit 0462da9d6b ("qapi: remove trivial "Returns:" sections")
  removed trivial "Returns:". This caused a conflict with the move from
  machine.json to accelerator.json.
 2025-07-16 07:13:40 -04:00
Philippe Mathieu-Daudé 05927e9dc9 accel: Rename 'system/accel-ops.h' -> 'accel/accel-cpu-ops.h' 
Unfortunately "system/accel-ops.h" handlers are not only
system-specific. For example, the cpu_reset_hold() hook
is part of the vCPU creation, after it is realized.

Mechanical rename to drop 'system' using:

  $ sed -i -e s_system/accel-ops.h_accel/accel-cpu-ops.h_g \
              $(git grep -l system/accel-ops.h)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250703173248.44995-38-philmd@linaro.org>
 2025-07-15 19:34:33 +02:00
Philippe Mathieu-DaudéandMichael S. Tsirkin 749c21cf6d qemu: Convert target_words_bigendian() to TargetInfo API 
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250708215320.70426-6-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2025-07-15 02:56:39 -04:00
Philippe Mathieu-Daudé 3d881164d4 qemu: Convert target_name() to TargetInfo API 
Have target_name() be a target-agnostic method, dispatching
to a per-target TargetInfo singleton structure.
By default a stub singleton is used. No logical change
expected.

Inspired-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250424222112.36194-3-philmd@linaro.org>
 2025-04-25 17:09:58 +02:00
Philippe Mathieu-Daudé 2492008d0d cpus: Move target-agnostic methods out of cpu-target.c 
Various methods of cpu-target.c don't use any target-specific
knowledge at all and can be built once in the target-agnostic
cpu-common.c file.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20250417165430.58213-4-philmd@linaro.org>
 2025-04-25 17:09:58 +02:00
Philippe Mathieu-Daudé 5e15bb7d66 cpus: Replace CPU_RESOLVING_TYPE -> target_cpu_type() 
Replace the target-specific CPU_RESOLVING_TYPE definition
by a call to the target-agnostic target_cpu_type() runtime
helper.

Since the big "cpu.h" is not required anymore in tcg-all.c,
remove it, using the tinier "cpu-param.h" header.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20250417165430.58213-3-philmd@linaro.org>
 2025-04-25 17:09:58 +02:00
Philippe Mathieu-Daudé b939b8e42a exec: Rename target_words_bigendian() -> target_big_endian() 
In commit 98ed8ecfc9 ("exec: introduce target_words_bigendian()
helper") target_words_bigendian() was matching the definition it
was depending on (TARGET_WORDS_BIGENDIAN). Later in commit
ee3eb3a7ce ("Replace TARGET_WORDS_BIGENDIAN") the definition was
renamed as TARGET_BIG_ENDIAN but we didn't update the helper.
Do it now mechanically using:

  $ sed -i -e s/target_words_bigendian/target_big_endian/g \
        $(git grep -wl target_words_bigendian)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20250417210025.68322-1-philmd@linaro.org>
 2025-04-25 17:00:42 +02:00
Philippe Mathieu-Daudé edbb66bb30 cpus: Remove #ifdef check on cpu_list definition 
Since we removed all definitions of cpu_list, the #ifdef
check is always true. Remove it, inlining cpu_list().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20250324185837.46506-7-philmd@linaro.org>
 2025-04-25 12:59:09 +02:00
Philippe Mathieu-Daudé 0a5692fecc cpus: Introduce CPUClass::list_cpus() callback 
Some targets define cpu_list to a method listing their
CPUs on stdout. In order to make list_cpus() generic,
introduce the CPUClass::list_cpus() callback.
When no callback is registered, list_cpus() defaults
to the cpu_list definition.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20250324185837.46506-2-philmd@linaro.org>
 2025-04-25 12:59:09 +02:00
Pierrick BouvierandRichard Henderson d97c3b06de exec/cpu-all: transfer exec/cpu-common include to cpu.h headers 
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250325045915.994760-15-pierrick.bouvier@linaro.org>
 2025-04-23 15:04:57 -07:00
Pierrick BouvierandRichard Henderson 8d535c312c include/exec/cpu-all: move compile time check for CPUArchState to cpu-target.c 
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250325045915.994760-4-pierrick.bouvier@linaro.org>
 2025-04-23 15:04:57 -07:00
Pierrick BouvierandRichard Henderson cfac5cdff5 exec/tswap: target code can use TARGET_BIG_ENDIAN instead of target_words_bigendian() 
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250317183417.285700-2-pierrick.bouvier@linaro.org>
 2025-04-23 13:52:06 -07:00
Philippe Mathieu-Daudé 43610f3184 cpus: Build cpu_exec_[un]realizefn() methods once 
Now that cpu_exec_realizefn() and cpu_exec_unrealizefn()
methods don't use any target specific definition anymore,
we can move them to cpu-common.c to be able to build them
once.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-21-philmd@linaro.org>
 2025-03-09 17:00:47 +01:00
Philippe Mathieu-Daudé ca05578fc8 cpus: Register VMState per user / system emulation 
Simplify cpu-target.c by extracting mixed vmstate code
into the cpu_vmstate_register() / cpu_vmstate_unregister()
helpers, implemented in cpu-user.c and cpu-system.c.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-20-philmd@linaro.org>
 2025-03-09 17:00:46 +01:00
Philippe Mathieu-DaudéandRichard Henderson 6ff5da1600 exec: Declare tlb_flush*() in 'exec/cputlb.h' 
Move CPU TLB related methods to "exec/cputlb.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20241114011310.3615-19-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2025-03-08 07:56:14 -08:00
Philippe Mathieu-Daudé a86cf967a1 cpus: Have cpu_exec_initfn() per user / system emulation 
Slighly simplify cpu-target.c again by extracting cpu_exec_initfn()
to cpu-{system,user}.c, adding an empty stub for user emulation.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-19-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé e3a575f560 cpus: Have cpu_class_init_props() per user / system emulation 
Rather than maintaining a mix of system / user code for CPU
class properties, move system properties to cpu-system.c
and user ones to the new cpu-user.c unit.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-18-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé 530c7139f6 cpus: Restrict cpu_common_post_load() code to TCG 
CPU_INTERRUPT_EXIT was removed in commit 3098dba01c
("Use a dedicated function to request exit from execution
loop"), tlb_flush() and tb_flush() are related to TCG
accelerator.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-17-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé c90476325c cpus: Fix style in cpu-target.c 
Fix style on code we are going to modify.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-16-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé 585d4b1229 accel/tcg: Move cpu_memory_rw_debug() user implementation to user-exec.c 
cpu_memory_rw_debug() system implementation is defined in
system/physmem.c. Move the user one to accel/tcg/user-exec.c
to simplify cpu-target.c maintenance.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250217130610.18313-6-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé eacd1f8445 accel/tcg: Avoid using lock_user() in cpu_memory_rw_debug() 
We checked the page flags with page_get_flags(), so
locking the page is superfluous. Remove the lock_user()
calls and directly use g2h() in place.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250217130610.18313-5-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé 964a4f2c29 accel/tcg: Take mmap lock in the whole cpu_memory_rw_debug() function 
Simplify user implementation of cpu_memory_rw_debug() by
taking the mmap lock globally. See commit 87ab270429
("linux-user: Allow gdbstub to ignore page protection")
for why this lock is necessary.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250217130610.18313-4-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé 0f66536a01 accel: Forward-declare AccelOpsClass in 'qemu/typedefs.h' 
The heavily imported "system/cpus.h" header includes "accel-ops.h"
to get AccelOpsClass type declaration. Reduce headers pressure by
forward declaring it in "qemu/typedefs.h", where we already
declare the AccelCPUState type.

Reduce "system/cpus.h" inclusions by only including
"system/accel-ops.h" when necessary.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-14-philmd@linaro.org>
 2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé b12a0f8566 accel: Rename 'hw/core/accel-cpu.h' -> 'accel/accel-cpu-target.h' 
AccelCPUClass is for accelerator to initialize target specific
features of a vCPU. Not really related to hardware emulation,
rename "hw/core/accel-cpu.h" as "accel/accel-cpu-target.h"
(using the explicit -target suffix).

More importantly, target specific header often access the
target specific definitions which are in each target/FOO/cpu.h
header, usually included generically as "cpu.h" relative to
target/FOO/. However, there is already a "cpu.h" in hw/core/
which takes precedence. This change allows "accel-cpu-target.h"
to include a target "cpu.h".

Mechanical change doing:

 $  git mv include/hw/core/accel-cpu.h \
           include/accel/accel-cpu-target.h
 $  sed -i -e 's,hw/core/accel-cpu.h,accel/accel-cpu-target.h,' \
   $(git grep -l hw/core/accel-cpu.h)

and renaming header guard 'ACCEL_CPU_TARGET_H'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-12-philmd@linaro.org>
 2025-03-06 15:46:17 +01:00