| Message ID | 20230626083317.144746-2-pbonzini@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | target/i386: allow using named CPU modeles with user mode emulation | expand |
On 6/26/23 10:33, Paolo Bonzini wrote: > ARCH_CAPABILITIES is only accessible through a read-only MSR, so it has > no impact on any user-mode operation (user-mode cannot read the MSR). > So do not bother printing warnings about it in user mode emulation. > > Signed-off-by: Paolo Bonzini<pbonzini@redhat.com> > --- > target/i386/cpu.c | 7 +++++++ > 1 file changed, 7 insertions(+) Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index c0fb6b3ad92..8387843c4d9 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1069,6 +1069,13 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .msr = { .index = MSR_IA32_ARCH_CAPABILITIES, }, + /* + * FEAT_ARCH_CAPABILITIES only affects a read-only MSR, which + * cannot be read from user mode. Therefore, it has no impact + > on any user-mode operation, and warnings about unsupported + * features do not matter. + */ + .tcg_features = ~0U, }, [FEAT_CORE_CAPABILITY] = { .type = MSR_FEATURE_WORD,
ARCH_CAPABILITIES is only accessible through a read-only MSR, so it has no impact on any user-mode operation (user-mode cannot read the MSR). So do not bother printing warnings about it in user mode emulation. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- target/i386/cpu.c | 7 +++++++ 1 file changed, 7 insertions(+)