diff options
| author | Andre Przywara <andre.przywara@amd.com> | 2010-03-11 14:39:01 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-03-13 16:50:54 +0100 |
| commit | 457dfed6146e19e4c7540456533be006076a2307 (patch) | |
| tree | 5b5fcbca1924a07cbb2ce8fa05fdef15047922b3 /target-i386 | |
| parent | ed2c54d4ccfc1f64b174712d0fc02dbe35f75744 (diff) | |
x86/cpuid: remove unnecessary kvm_trim function
Correct me if I am wrong, but kvm_trim looks like a really bloated
implementation of a bitwise AND. So remove this function and replace
it with the real stuff(TM).
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/kvm.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 40f83037d6..f77e4880b3 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -133,19 +133,6 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg) #endif -static void kvm_trim_features(uint32_t *features, uint32_t supported) -{ - int i; - uint32_t mask; - - for (i = 0; i < 32; ++i) { - mask = 1U << i; - if ((*features & mask) && !(supported & mask)) { - *features &= ~mask; - } - } -} - #ifdef CONFIG_KVM_PARA struct kvm_para_features { int cap; @@ -191,18 +178,16 @@ int kvm_arch_init_vcpu(CPUState *env) env->mp_state = KVM_MP_STATE_RUNNABLE; - kvm_trim_features(&env->cpuid_features, - kvm_arch_get_supported_cpuid(env, 1, R_EDX)); + env->cpuid_features &= kvm_arch_get_supported_cpuid(env, 1, R_EDX); i = env->cpuid_ext_features & CPUID_EXT_HYPERVISOR; - kvm_trim_features(&env->cpuid_ext_features, - kvm_arch_get_supported_cpuid(env, 1, R_ECX)); + env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(env, 1, R_ECX); env->cpuid_ext_features |= i; - kvm_trim_features(&env->cpuid_ext2_features, - kvm_arch_get_supported_cpuid(env, 0x80000001, R_EDX)); - kvm_trim_features(&env->cpuid_ext3_features, - kvm_arch_get_supported_cpuid(env, 0x80000001, R_ECX)); + env->cpuid_ext2_features &= kvm_arch_get_supported_cpuid(env, 0x80000001, + R_EDX); + env->cpuid_ext3_features &= kvm_arch_get_supported_cpuid(env, 0x80000001, + R_ECX); cpuid_i = 0; |