| Message ID | 20240115091325.1904229-3-xiaoyao.li@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | i386/cpu: Two minor fixes for x86_cpu_enable_xsave_components() | expand |
On 1/15/2024 5:13 PM, Li, Xiaoyao wrote: > The value of FEAT_XSAVE_XCR0_HI leaf and FEAT_XSAVE_XSS_HI leaf also > need to be masked by XCR0 and XSS mask respectively, to make it > logically correct. > > Fixes: 301e90675c3f ("target/i386: Enable support for XSAVES based features") > Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> > --- > target/i386/cpu.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/target/i386/cpu.c b/target/i386/cpu.c > index b445e2957c4f..a5c08944a483 100644 > --- a/target/i386/cpu.c > +++ b/target/i386/cpu.c > @@ -6946,9 +6946,9 @@ static void x86_cpu_enable_xsave_components(X86CPU *cpu) > } > > env->features[FEAT_XSAVE_XCR0_LO] = mask & CPUID_XSTATE_XCR0_MASK; > - env->features[FEAT_XSAVE_XCR0_HI] = mask >> 32; > + env->features[FEAT_XSAVE_XCR0_HI] = (mask & CPUID_XSTATE_XCR0_MASK) >> 32; > env->features[FEAT_XSAVE_XSS_LO] = mask & CPUID_XSTATE_XSS_MASK; > - env->features[FEAT_XSAVE_XSS_HI] = mask >> 32; > + env->features[FEAT_XSAVE_XSS_HI] = (mask & CPUID_XSTATE_XSS_MASK) >> 32; > } Thanks for fixing this! Reviewed-by: Yang Weijiang <weijiang.yang@intel.com> > > /***** Steps involved on loading and filtering CPUID data
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index b445e2957c4f..a5c08944a483 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6946,9 +6946,9 @@ static void x86_cpu_enable_xsave_components(X86CPU *cpu) } env->features[FEAT_XSAVE_XCR0_LO] = mask & CPUID_XSTATE_XCR0_MASK; - env->features[FEAT_XSAVE_XCR0_HI] = mask >> 32; + env->features[FEAT_XSAVE_XCR0_HI] = (mask & CPUID_XSTATE_XCR0_MASK) >> 32; env->features[FEAT_XSAVE_XSS_LO] = mask & CPUID_XSTATE_XSS_MASK; - env->features[FEAT_XSAVE_XSS_HI] = mask >> 32; + env->features[FEAT_XSAVE_XSS_HI] = (mask & CPUID_XSTATE_XSS_MASK) >> 32; } /***** Steps involved on loading and filtering CPUID data
The value of FEAT_XSAVE_XCR0_HI leaf and FEAT_XSAVE_XSS_HI leaf also need to be masked by XCR0 and XSS mask respectively, to make it logically correct. Fixes: 301e90675c3f ("target/i386: Enable support for XSAVES based features") Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> --- target/i386/cpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)