Re: [libvirt] [Qemu-devel] [PATCH qom-cpu 5/9] target-i386: Add ECX information to FeatureWordInfo

FEAT_7_0_EBX uses ECX as input, so we have to take that into account when reporting feature word values. Signed-off-by: Eduardo Habkost <ehabkost(a)redhat.com&gt; --- target-i386/cpu.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 110ef98..314931e 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -151,8 +151,10 @@ static const char *cpuid_7_0_ebx_feature_name[] = { typedef struct FeatureWordInfo { const char **feat_names; - uint32_t cpuid_eax; /* Input EAX for CPUID */ - int cpuid_reg; /* R_* register constant */ + uint32_t cpuid_eax; /* Input EAX for CPUID */

+ bool cpuid_needs_ecx; /* CPUID instruction uses ECX as input */

+ uint32_t cpuid_ecx; /* Input ECX value for CPUID */ + int cpuid_reg; /* output register (R_* constant) */ } FeatureWordInfo; static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { @@ -186,7 +188,9 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { }, [FEAT_7_0_EBX] = { .feat_names = cpuid_7_0_ebx_feature_name, - .cpuid_eax = 7, .cpuid_reg = R_EBX, + .cpuid_eax = 7, + .cpuid_needs_ecx = true, .cpuid_ecx = 0, + .cpuid_reg = R_EBX, }, };