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kvm: Extend kvm_arch_get_supported_cpuid() to support index 

Would use it later for XSAVE related CPUID.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Sheng Yang 2010-06-17 15:18:13 +08:00 committed by Marcelo Tosatti
parent 8935499831
commit c958a8bd9b
2 changed files with 12 additions and 9 deletions
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2
kvm.h
View File

@ -144,7 +144,7 @@ bool kvm_arch_stop_on_emulation_error(CPUState *env);
int kvm_check_extension(KVMState *s, unsigned int extension);
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
int reg);
uint32_t index, int reg);
void kvm_cpu_synchronize_state(CPUState *env);
void kvm_cpu_synchronize_post_reset(CPUState *env);
void kvm_cpu_synchronize_post_init(CPUState *env);

19
target-i386/kvm.c
View File

@ -71,7 +71,8 @@ static struct kvm_cpuid2 *try_get_cpuid(KVMState *s, int max)
return cpuid;
}
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
uint32_t index, int reg)
{
struct kvm_cpuid2 *cpuid;
int i, max;
@ -88,7 +89,8 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
}
for (i = 0; i < cpuid->nent; ++i) {
if (cpuid->entries[i].function == function) {
if (cpuid->entries[i].function == function &&
cpuid->entries[i].index == index) {
switch (reg) {
case R_EAX:
ret = cpuid->entries[i].eax;
@ -110,7 +112,7 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
/* On Intel, kvm returns cpuid according to the Intel spec,
* so add missing bits according to the AMD spec:
*/
cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, R_EDX);
cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, 0, R_EDX);
ret |= cpuid_1_edx & 0x183f7ff;
break;
}
@ -126,7 +128,8 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
#else
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
uint32_t index, int reg)
{
return -1U;
}
@ -178,16 +181,16 @@ int kvm_arch_init_vcpu(CPUState *env)
env->mp_state = KVM_MP_STATE_RUNNABLE;
env->cpuid_features &= kvm_arch_get_supported_cpuid(env, 1, R_EDX);
env->cpuid_features &= kvm_arch_get_supported_cpuid(env, 1, 0, R_EDX);
i = env->cpuid_ext_features & CPUID_EXT_HYPERVISOR;
env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(env, 1, R_ECX);
env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(env, 1, 0, R_ECX);
env->cpuid_ext_features |= i;
env->cpuid_ext2_features &= kvm_arch_get_supported_cpuid(env, 0x80000001,
R_EDX);
0, R_EDX);
env->cpuid_ext3_features &= kvm_arch_get_supported_cpuid(env, 0x80000001,
R_ECX);
0, R_ECX);
cpuid_i = 0;