1. Patchew
  2. QEMU
  3. [PATCH 0/9] accel/tcg: Extract some x86-specific code
  4. View patch

[PATCH 7/9] target/i386: Extract x86_need_replay_interrupt() from accel/tcg/

Philippe Mathieu-Daudé posted 9 patches 2 years ago
[PATCH 7/9] target/i386: Extract x86_need_replay_interrupt() from accel/tcg/
Posted by Philippe Mathieu-Daudé 2 years ago 
Move this x86-specific code out of the generic accel/tcg/.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/i386/tcg/helper-tcg.h        |  1 +
 accel/tcg/cpu-exec.c                |  9 ---------
 target/i386/tcg/sysemu/seg_helper.c | 10 ++++++++++
 target/i386/tcg/tcg-cpu.c           |  1 +
 4 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/target/i386/tcg/helper-tcg.h b/target/i386/tcg/helper-tcg.h
index ce34b737bb..253b1f561e 100644
--- a/target/i386/tcg/helper-tcg.h
+++ b/target/i386/tcg/helper-tcg.h
@@ -39,6 +39,7 @@ QEMU_BUILD_BUG_ON(TCG_PHYS_ADDR_BITS > TARGET_PHYS_ADDR_SPACE_BITS);
  */
 void x86_cpu_do_interrupt(CPUState *cpu);
 #ifndef CONFIG_USER_ONLY
+bool x86_need_replay_interrupt(int interrupt_request);
 bool x86_cpu_exec_interrupt(CPUState *cpu, int int_req);
 #endif
 
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 4ab7d6c896..5a978a9e72 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -768,21 +768,12 @@ static inline bool cpu_handle_exception(CPUClass *cc, CPUState *cpu, int *ret)
 }
 
 #ifndef CONFIG_USER_ONLY
-/*
- * CPU_INTERRUPT_POLL is a virtual event which gets converted into a
- * "real" interrupt event later. It does not need to be recorded for
- * replay purposes.
- */
 static inline bool need_replay_interrupt(CPUClass *cc, int interrupt_request)
 {
-#if defined(TARGET_I386)
-    return !(interrupt_request & CPU_INTERRUPT_POLL);
-#else
     if (!cc->tcg_ops->need_replay_interrupt) {
         return true;
     }
     return cc->tcg_ops->need_replay_interrupt(interrupt_request);
-#endif
 }
 #endif /* !CONFIG_USER_ONLY */
 
diff --git a/target/i386/tcg/sysemu/seg_helper.c b/target/i386/tcg/sysemu/seg_helper.c
index 1cb5a0db45..e6f42282bb 100644
--- a/target/i386/tcg/sysemu/seg_helper.c
+++ b/target/i386/tcg/sysemu/seg_helper.c
@@ -127,6 +127,16 @@ void x86_cpu_do_interrupt(CPUState *cs)
     }
 }
 
+bool x86_need_replay_interrupt(int interrupt_request)
+{
+    /*
+     * CPU_INTERRUPT_POLL is a virtual event which gets converted into a
+     * "real" interrupt event later. It does not need to be recorded for
+     * replay purposes.
+     */
+    return !(interrupt_request & CPU_INTERRUPT_POLL);
+}
+
 bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 {
     X86CPU *cpu = X86_CPU(cs);
diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c
index e1405b7be9..255d56d4c3 100644
--- a/target/i386/tcg/tcg-cpu.c
+++ b/target/i386/tcg/tcg-cpu.c
@@ -123,6 +123,7 @@ static const struct TCGCPUOps x86_tcg_ops = {
     .do_unaligned_access = x86_cpu_do_unaligned_access,
     .debug_excp_handler = breakpoint_handler,
     .debug_check_breakpoint = x86_debug_check_breakpoint,
+    .need_replay_interrupt = x86_need_replay_interrupt,
 #endif /* !CONFIG_USER_ONLY */
 };
 
-- 
2.41.0
Re: [PATCH 7/9] target/i386: Extract x86_need_replay_interrupt() from accel/tcg/
Posted by Pavel Dovgalyuk 2 years ago 
Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>

On 24.01.2024 13:16, Philippe Mathieu-Daudé wrote:
> Move this x86-specific code out of the generic accel/tcg/.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   target/i386/tcg/helper-tcg.h        |  1 +
>   accel/tcg/cpu-exec.c                |  9 ---------
>   target/i386/tcg/sysemu/seg_helper.c | 10 ++++++++++
>   target/i386/tcg/tcg-cpu.c           |  1 +
>   4 files changed, 12 insertions(+), 9 deletions(-)
> 
> diff --git a/target/i386/tcg/helper-tcg.h b/target/i386/tcg/helper-tcg.h
> index ce34b737bb..253b1f561e 100644
> --- a/target/i386/tcg/helper-tcg.h
> +++ b/target/i386/tcg/helper-tcg.h
> @@ -39,6 +39,7 @@ QEMU_BUILD_BUG_ON(TCG_PHYS_ADDR_BITS > TARGET_PHYS_ADDR_SPACE_BITS);
>    */
>   void x86_cpu_do_interrupt(CPUState *cpu);
>   #ifndef CONFIG_USER_ONLY
> +bool x86_need_replay_interrupt(int interrupt_request);
>   bool x86_cpu_exec_interrupt(CPUState *cpu, int int_req);
>   #endif
>   
> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> index 4ab7d6c896..5a978a9e72 100644
> --- a/accel/tcg/cpu-exec.c
> +++ b/accel/tcg/cpu-exec.c
> @@ -768,21 +768,12 @@ static inline bool cpu_handle_exception(CPUClass *cc, CPUState *cpu, int *ret)
>   }
>   
>   #ifndef CONFIG_USER_ONLY
> -/*
> - * CPU_INTERRUPT_POLL is a virtual event which gets converted into a
> - * "real" interrupt event later. It does not need to be recorded for
> - * replay purposes.
> - */
>   static inline bool need_replay_interrupt(CPUClass *cc, int interrupt_request)
>   {
> -#if defined(TARGET_I386)
> -    return !(interrupt_request & CPU_INTERRUPT_POLL);
> -#else
>       if (!cc->tcg_ops->need_replay_interrupt) {
>           return true;
>       }
>       return cc->tcg_ops->need_replay_interrupt(interrupt_request);
> -#endif
>   }
>   #endif /* !CONFIG_USER_ONLY */
>   
> diff --git a/target/i386/tcg/sysemu/seg_helper.c b/target/i386/tcg/sysemu/seg_helper.c
> index 1cb5a0db45..e6f42282bb 100644
> --- a/target/i386/tcg/sysemu/seg_helper.c
> +++ b/target/i386/tcg/sysemu/seg_helper.c
> @@ -127,6 +127,16 @@ void x86_cpu_do_interrupt(CPUState *cs)
>       }
>   }
>   
> +bool x86_need_replay_interrupt(int interrupt_request)
> +{
> +    /*
> +     * CPU_INTERRUPT_POLL is a virtual event which gets converted into a
> +     * "real" interrupt event later. It does not need to be recorded for
> +     * replay purposes.
> +     */
> +    return !(interrupt_request & CPU_INTERRUPT_POLL);
> +}
> +
>   bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
>   {
>       X86CPU *cpu = X86_CPU(cs);
> diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c
> index e1405b7be9..255d56d4c3 100644
> --- a/target/i386/tcg/tcg-cpu.c
> +++ b/target/i386/tcg/tcg-cpu.c
> @@ -123,6 +123,7 @@ static const struct TCGCPUOps x86_tcg_ops = {
>       .do_unaligned_access = x86_cpu_do_unaligned_access,
>       .debug_excp_handler = breakpoint_handler,
>       .debug_check_breakpoint = x86_debug_check_breakpoint,
> +    .need_replay_interrupt = x86_need_replay_interrupt,
>   #endif /* !CONFIG_USER_ONLY */
>   };
>
Re: [PATCH 7/9] target/i386: Extract x86_need_replay_interrupt() from accel/tcg/
Posted by Richard Henderson 2 years ago 
On 1/24/24 20:16, Philippe Mathieu-Daudé wrote:
> Move this x86-specific code out of the generic accel/tcg/.
> 
> Signed-off-by: Philippe Mathieu-Daudé<philmd@linaro.org>
> ---
>   target/i386/tcg/helper-tcg.h        |  1 +
>   accel/tcg/cpu-exec.c                |  9 ---------
>   target/i386/tcg/sysemu/seg_helper.c | 10 ++++++++++
>   target/i386/tcg/tcg-cpu.c           |  1 +
>   4 files changed, 12 insertions(+), 9 deletions(-)

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

r~
Re: [PATCH 7/9] target/i386: Extract x86_need_replay_interrupt() from accel/tcg/
Posted by Anton Johansson via 2 years ago 
On 24/01/24, Philippe Mathieu-Daudé wrote:
> Move this x86-specific code out of the generic accel/tcg/.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  target/i386/tcg/helper-tcg.h        |  1 +
>  accel/tcg/cpu-exec.c                |  9 ---------
>  target/i386/tcg/sysemu/seg_helper.c | 10 ++++++++++
>  target/i386/tcg/tcg-cpu.c           |  1 +
>  4 files changed, 12 insertions(+), 9 deletions(-)
> 
> diff --git a/target/i386/tcg/helper-tcg.h b/target/i386/tcg/helper-tcg.h
> index ce34b737bb..253b1f561e 100644
> --- a/target/i386/tcg/helper-tcg.h
> +++ b/target/i386/tcg/helper-tcg.h
> @@ -39,6 +39,7 @@ QEMU_BUILD_BUG_ON(TCG_PHYS_ADDR_BITS > TARGET_PHYS_ADDR_SPACE_BITS);
>   */
>  void x86_cpu_do_interrupt(CPUState *cpu);
>  #ifndef CONFIG_USER_ONLY
> +bool x86_need_replay_interrupt(int interrupt_request);
>  bool x86_cpu_exec_interrupt(CPUState *cpu, int int_req);
>  #endif
>  
> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> index 4ab7d6c896..5a978a9e72 100644
> --- a/accel/tcg/cpu-exec.c
> +++ b/accel/tcg/cpu-exec.c
> @@ -768,21 +768,12 @@ static inline bool cpu_handle_exception(CPUClass *cc, CPUState *cpu, int *ret)
>  }
>  
>  #ifndef CONFIG_USER_ONLY
> -/*
> - * CPU_INTERRUPT_POLL is a virtual event which gets converted into a
> - * "real" interrupt event later. It does not need to be recorded for
> - * replay purposes.
> - */
>  static inline bool need_replay_interrupt(CPUClass *cc, int interrupt_request)
>  {
> -#if defined(TARGET_I386)
> -    return !(interrupt_request & CPU_INTERRUPT_POLL);
> -#else
>      if (!cc->tcg_ops->need_replay_interrupt) {
>          return true;
>      }
>      return cc->tcg_ops->need_replay_interrupt(interrupt_request);
> -#endif
>  }
>  #endif /* !CONFIG_USER_ONLY */
>  
> diff --git a/target/i386/tcg/sysemu/seg_helper.c b/target/i386/tcg/sysemu/seg_helper.c
> index 1cb5a0db45..e6f42282bb 100644
> --- a/target/i386/tcg/sysemu/seg_helper.c
> +++ b/target/i386/tcg/sysemu/seg_helper.c
> @@ -127,6 +127,16 @@ void x86_cpu_do_interrupt(CPUState *cs)
>      }
>  }
>  
> +bool x86_need_replay_interrupt(int interrupt_request)
> +{
> +    /*
> +     * CPU_INTERRUPT_POLL is a virtual event which gets converted into a
> +     * "real" interrupt event later. It does not need to be recorded for
> +     * replay purposes.
> +     */
> +    return !(interrupt_request & CPU_INTERRUPT_POLL);
> +}
> +
>  bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
>  {
>      X86CPU *cpu = X86_CPU(cs);
> diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c
> index e1405b7be9..255d56d4c3 100644
> --- a/target/i386/tcg/tcg-cpu.c
> +++ b/target/i386/tcg/tcg-cpu.c
> @@ -123,6 +123,7 @@ static const struct TCGCPUOps x86_tcg_ops = {
>      .do_unaligned_access = x86_cpu_do_unaligned_access,
>      .debug_excp_handler = breakpoint_handler,
>      .debug_check_breakpoint = x86_debug_check_breakpoint,
> +    .need_replay_interrupt = x86_need_replay_interrupt,
>  #endif /* !CONFIG_USER_ONLY */
>  };
>  
> -- 
> 2.41.0
> 
Ah this makes me happy!:)
Reviewed-by: Anton Johansson <anjo@rev.ng>
Re: [PATCH 7/9] target/i386: Extract x86_need_replay_interrupt() from accel/tcg/
Posted by Philippe Mathieu-Daudé 2 years ago 
On 24/1/24 18:17, Anton Johansson wrote:
> On 24/01/24, Philippe Mathieu-Daudé wrote:
>> Move this x86-specific code out of the generic accel/tcg/.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>>   target/i386/tcg/helper-tcg.h        |  1 +
>>   accel/tcg/cpu-exec.c                |  9 ---------
>>   target/i386/tcg/sysemu/seg_helper.c | 10 ++++++++++
>>   target/i386/tcg/tcg-cpu.c           |  1 +
>>   4 files changed, 12 insertions(+), 9 deletions(-)

> Ah this makes me happy!:)

There are still few more, but this is a start...

$ git grep -wA3 TARGET_I386 accel/tcg
accel/tcg/cpu-exec.c:311:#if defined(TARGET_I386)
accel/tcg/cpu-exec.c-312-                flags |= CPU_DUMP_CCOP;
accel/tcg/cpu-exec.c-313-#endif
--
accel/tcg/cpu-exec.c:727:#if defined(TARGET_I386)
accel/tcg/cpu-exec.c-728-        cc->tcg_ops->fake_user_interrupt(cpu);
accel/tcg/cpu-exec.c:729:#endif /* TARGET_I386 */
--
accel/tcg/cpu-exec.c:826:#if defined(TARGET_I386)
accel/tcg/cpu-exec.c-827-        else if (interrupt_request & 
CPU_INTERRUPT_INIT) {
accel/tcg/cpu-exec.c-828-            X86CPU *x86_cpu = X86_CPU(cpu);
accel/tcg/cpu-exec.c-829-            CPUArchState *env = &x86_cpu->env;
...
accel/tcg/cpu-exec.c:844:#endif /* !TARGET_I386 */
--

> Reviewed-by: Anton Johansson <anjo@rev.ng>

Thanks!

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.