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i386: kvm: use a #define for the set of alias feature bits 

Instea of using a hardcoded hex constant, define CPUID_EXT2_AMD_ALIASES
as the set of CPUID[8000_0001].EDX bits that on AMD are the same as the
bits of CPUID[1].EDX.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-By: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Don Slutz <Don@CloudSwitch.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Eduardo Habkost 2012-09-06 10:05:36 +00:00 committed by Blue Swirl
parent b1f4679392
commit 8fad4b44a0
2 changed files with 13 additions and 1 deletions
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12
target-i386/cpu.h
View File

@ -409,6 +409,7 @@
#define CPUID_EXT_HYPERVISOR (1 << 31)
#define CPUID_EXT2_FPU (1 << 0)
#define CPUID_EXT2_VME (1 << 1)
#define CPUID_EXT2_DE (1 << 2)
#define CPUID_EXT2_PSE (1 << 3)
#define CPUID_EXT2_TSC (1 << 4)
@ -436,6 +437,17 @@
#define CPUID_EXT2_3DNOWEXT (1 << 30)
#define CPUID_EXT2_3DNOW (1 << 31)
/* CPUID[8000_0001].EDX bits that are aliase of CPUID[1].EDX bits on AMD CPUs */
#define CPUID_EXT2_AMD_ALIASES (CPUID_EXT2_FPU | CPUID_EXT2_VME | \
CPUID_EXT2_DE | CPUID_EXT2_PSE | \
CPUID_EXT2_TSC | CPUID_EXT2_MSR | \
CPUID_EXT2_PAE | CPUID_EXT2_MCE | \
CPUID_EXT2_CX8 | CPUID_EXT2_APIC | \
CPUID_EXT2_MTRR | CPUID_EXT2_PGE | \
CPUID_EXT2_MCA | CPUID_EXT2_CMOV | \
CPUID_EXT2_PAT | CPUID_EXT2_PSE36 | \
CPUID_EXT2_MMX | CPUID_EXT2_FXSR)
#define CPUID_EXT3_LAHF_LM (1 << 0)
#define CPUID_EXT3_CMP_LEG (1 << 1)
#define CPUID_EXT3_SVM (1 << 2)

2
target-i386/kvm.c
View File

@ -165,7 +165,7 @@ uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function,
* so add missing bits according to the AMD spec:
*/
cpuid_1_edx = kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX);
ret |= cpuid_1_edx & 0x183f3ff;
ret |= cpuid_1_edx & CPUID_EXT2_AMD_ALIASES;
break;
}
break;