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target-i386: Eliminate CONFIG_KVM #ifdefs 

The compiler is already able to eliminate the kvm_arch_get_supported_cpuid()
calls in kvm_cpu_fill_host() and filter_features_for_kvm(), so we can
eliminate the CONFIG_KVM #ifdefs there.

Also, kvm_cpu_fill_host() and host_cpuid() don't need to check
CONFIG_KVM, as they don't have any KVM-specific function calls.

Tested to build successfully with CONFIG_KVM disabled, using the
following CFLAGS combinations: "-DNDEBUG", "-DNDEBUG -O', "-DNDEBUG
-O0", "-DNDEBUG -O1", "-DNDEBUG -O2".

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Eduardo Habkost 2014-01-30 17:48:53 -02:00 committed by Paolo Bonzini
parent 48a5f3bcbb
commit c1f412260b
1 changed files with 3 additions and 12 deletions
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15
target-i386/cpu.c
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@ -374,7 +374,6 @@ void disable_kvm_pv_eoi(void)
void host_cpuid(uint32_t function, uint32_t count,
uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx)
{
#if defined(CONFIG_KVM)
uint32_t vec[4];
#ifdef __x86_64__
@ -382,7 +381,7 @@ void host_cpuid(uint32_t function, uint32_t count,
: "=a"(vec[0]), "=b"(vec[1]),
"=c"(vec[2]), "=d"(vec[3])
: "0"(function), "c"(count) : "cc");
#else
#elif defined(__i386__)
asm volatile("pusha \n\t"
"cpuid \n\t"
"mov %%eax, 0(%2) \n\t"
@ -392,6 +391,8 @@ void host_cpuid(uint32_t function, uint32_t count,
"popa"
: : "a"(function), "c"(count), "S"(vec)
: "memory", "cc");
#else
abort();
#endif
if (eax)
@ -402,7 +403,6 @@ void host_cpuid(uint32_t function, uint32_t count,
*ecx = vec[2];
if (edx)
*edx = vec[3];
#endif
}
#define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c)))
@ -1119,7 +1119,6 @@ void x86_cpu_compat_set_features(const char *cpu_model, FeatureWord w,
}
}
#ifdef CONFIG_KVM
static int cpu_x86_fill_model_id(char *str)
{
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
@ -1134,7 +1133,6 @@ static int cpu_x86_fill_model_id(char *str)
}
return 0;
}
#endif
/* Fill a x86_def_t struct with information about the host CPU, and
* the CPU features supported by the host hardware + host kernel
@ -1143,7 +1141,6 @@ static int cpu_x86_fill_model_id(char *str)
*/
static void kvm_cpu_fill_host(x86_def_t *x86_cpu_def)
{
#ifdef CONFIG_KVM
KVMState *s = kvm_state;
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
@ -1173,8 +1170,6 @@ static void kvm_cpu_fill_host(x86_def_t *x86_cpu_def)
kvm_arch_get_supported_cpuid(s, wi->cpuid_eax, wi->cpuid_ecx,
wi->cpuid_reg);
}
#endif /* CONFIG_KVM */
}
static int unavailable_host_feature(FeatureWordInfo *f, uint32_t mask)
@ -1817,7 +1812,6 @@ CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
return cpu_list;
}
#ifdef CONFIG_KVM
static void filter_features_for_kvm(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
@ -1834,7 +1828,6 @@ static void filter_features_for_kvm(X86CPU *cpu)
cpu->filtered_features[w] = requested_features & ~env->features[w];
}
}
#endif
static void cpu_x86_register(X86CPU *cpu, const char *name, Error **errp)
{
@ -2545,9 +2538,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
"Host's CPU doesn't support requested features");
goto out;
}
#ifdef CONFIG_KVM
filter_features_for_kvm(cpu);
#endif
}
#ifndef CONFIG_USER_ONLY