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Re: [Qemu-devel] [PATCH qom-cpu] cpu-exec: Optimize X86CPU usage in cpu_
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCH qom-cpu] cpu-exec: Optimize X86CPU usage in cpu_exec() |
Date: |
Tue, 24 Dec 2013 12:34:12 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 |
Am 24.12.2013 03:52, schrieb Chen Fan:
> On Tue, 2013-12-24 at 03:38 +0100, Andreas Färber wrote:
>> Replace growing numbers of inline x86_env_get_cpu() with x86_cpu variable.
>>
>> Signed-off-by: Andreas Färber <address@hidden>
>> ---
>> cpu-exec.c | 14 ++++++++++----
>> 1 file changed, 10 insertions(+), 4 deletions(-)
>>
>> diff --git a/cpu-exec.c b/cpu-exec.c
>> index 2711c58..f7a215c 100644
>> --- a/cpu-exec.c
>> +++ b/cpu-exec.c
>> @@ -206,6 +206,9 @@ int cpu_exec(CPUArchState *env)
>> (defined(TARGET_M68K) || defined(TARGET_PPC) ||
>> defined(TARGET_S390X)))
>> CPUClass *cc = CPU_GET_CLASS(cpu);
>> #endif
>> +#ifdef TARGET_I386
>> + X86CPU *x86_cpu = X86_CPU(cpu);
>> +#endif
> Hi, Andreas,
> I think this defined grammar should correspond with other, of course
> it's correct also.
Yes, X86_CPU(cpu) == CPU(x86_cpu), so converting at CPU level seemed
more straightforward to me rather than going outwards from embedded env,
given that the number of casts is kept low (once at beginning).
>> int ret, interrupt_request;
>> TranslationBlock *tb;
>> uint8_t *tc_ptr;
>> @@ -320,24 +323,24 @@ int cpu_exec(CPUArchState *env)
>> #if !defined(CONFIG_USER_ONLY)
>> if (interrupt_request & CPU_INTERRUPT_POLL) {
>> cpu->interrupt_request &= ~CPU_INTERRUPT_POLL;
>> - apic_poll_irq(x86_env_get_cpu(env)->apic_state);
>> + apic_poll_irq(x86_cpu->apic_state);
>> }
>> #endif
>> if (interrupt_request & CPU_INTERRUPT_INIT) {
>> cpu_svm_check_intercept_param(env,
>> SVM_EXIT_INIT,
>> 0);
>> - do_cpu_init(x86_env_get_cpu(env));
>> + do_cpu_init(x86_cpu);
>> env->exception_index = EXCP_HALTED;
>> cpu_loop_exit(env);
>> } else if (interrupt_request & CPU_INTERRUPT_SIPI) {
>> - do_cpu_sipi(x86_env_get_cpu(env));
>> + do_cpu_sipi(x86_cpu);
>> } else if (env->hflags2 & HF2_GIF_MASK) {
>> if ((interrupt_request & CPU_INTERRUPT_SMI) &&
>> !(env->hflags & HF_SMM_MASK)) {
>> cpu_svm_check_intercept_param(env, SVM_EXIT_SMI,
>> 0);
>> cpu->interrupt_request &= ~CPU_INTERRUPT_SMI;
>> - do_smm_enter(x86_env_get_cpu(env));
>> + do_smm_enter(x86_cpu);
>> next_tb = 0;
>> } else if ((interrupt_request & CPU_INTERRUPT_NMI)
>> &&
>> !(env->hflags2 & HF2_NMI_MASK)) {
>> @@ -685,6 +688,9 @@ int cpu_exec(CPUArchState *env)
>> (defined(TARGET_M68K) || defined(TARGET_PPC) ||
>> defined(TARGET_S390X)))
>> cc = CPU_GET_CLASS(cpu);
>> #endif
>> +#ifdef TARGET_I386
>> + x86_cpu = X86_CPU(cpu);
>> +#endif
>> }
>> } /* for(;;) */
>>
> Reviewed-by: Chen Fan <address@hidden>
Thanks, applied to qom-cpu:
https://github.com/afaerber/qemu-cpu/commits/qom-cpu
Andreas
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