diff options
| author | Haozhong Zhang <haozhong.zhang@intel.com> | 2016-06-23 14:15:43 +0800 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2016-07-07 15:25:31 -0300 |
| commit | 217f1b4a72153cf8d556e9d45919e9222c38d25e (patch) | |
| tree | e0a87bb9de8d94200d6aa5960490ecdc312eddbd /target-i386 | |
| parent | 87f8b626041ceaea9adcfdbd549359f0ca7b871d (diff) | |
| download | qemu-217f1b4a72153cf8d556e9d45919e9222c38d25e.tar.gz | |
target-i386: Publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg
It's a prerequisite that certain bits of MSR_IA32_FEATURE_CONTROL should
be set before some features (e.g. VMX and LMCE) can be used, which is
usually done by the firmware. This patch adds a fw_cfg file
"etc/msr_feature_control" which contains the advised value of
MSR_IA32_FEATURE_CONTROL and can be used by guest firmware (e.g. SeaBIOS).
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/cpu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index 54c3fd6561..5c7a2791f3 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -332,6 +332,10 @@ #define MSR_TSC_ADJUST 0x0000003b #define MSR_IA32_TSCDEADLINE 0x6e0 +#define FEATURE_CONTROL_LOCKED (1<<0) +#define FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX (1<<2) +#define FEATURE_CONTROL_LMCE (1<<20) + #define MSR_P6_PERFCTR0 0xc1 #define MSR_IA32_SMBASE 0x9e |