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i386: kvm: extract CPUID entry lookup to cpuid_find_entry() function

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No behavior change, just code movement.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Eduardo Habkost 2012-10-04 17:48:57 -03:00 committed by Marcelo Tosatti
parent 829ae2f9fa
commit 4fb73f1d3b
1 changed files with 22 additions and 8 deletions
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30
target-i386/kvm.c
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@ -145,11 +145,28 @@ static uint32_t cpuid_entry_get_reg(struct kvm_cpuid_entry2 *entry, int reg)
return ret; return ret;
} }
/* Find matching entry for function/index on kvm_cpuid2 struct
*/
static struct kvm_cpuid_entry2 *cpuid_find_entry(struct kvm_cpuid2 *cpuid,
uint32_t function,
uint32_t index)
{
int i;
for (i = 0; i < cpuid->nent; ++i) {
if (cpuid->entries[i].function == function &&
cpuid->entries[i].index == index) {
return &cpuid->entries[i];
}
}
/* not found: */
return NULL;
}
uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function, uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function,
uint32_t index, int reg) uint32_t index, int reg)
{ {
struct kvm_cpuid2 *cpuid; struct kvm_cpuid2 *cpuid;
int i, max; int max;
uint32_t ret = 0; uint32_t ret = 0;
uint32_t cpuid_1_edx; uint32_t cpuid_1_edx;
bool found = false; bool found = false;
@ -159,13 +176,10 @@ uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function,
max *= 2; max *= 2;
} }
for (i = 0; i < cpuid->nent; ++i) { struct kvm_cpuid_entry2 *entry = cpuid_find_entry(cpuid, function, index);
if (cpuid->entries[i].function == function && if (entry) {
cpuid->entries[i].index == index) { found = true;
struct kvm_cpuid_entry2 *entry = &cpuid->entries[i]; ret = cpuid_entry_get_reg(entry, reg);
found = true;
ret = cpuid_entry_get_reg(entry, reg);
}
} }
/* Fixups for the data returned by KVM, below */ /* Fixups for the data returned by KVM, below */