Haozhong Zhang <haozhong.zhang@xxxxxxxxx> wrote:
>This patch adds the support to inject SRAR and SRAO as LMCE, i.e. they
>will be injected to only one VCPU rather than broadcast to all
>VCPUs. As KVM reports LMCE support on Intel platforms, this features is
>only available on Intel platforms.
>
>Signed-off-by: Ashok Raj <ashok.raj@xxxxxxxxx>
>Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
>---
>Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
>Cc: Richard Henderson <rth@xxxxxxxxxxx>
>Cc: Eduardo Habkost <ehabkost@xxxxxxxxxx>
>Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
>Cc: Boris Petkov <bp@xxxxxxx>
>Cc: kvm@xxxxxxxxxxxxxxx
>Cc: Tony Luck <tony.luck@xxxxxxxxx>
>Cc: Andi Kleen <andi.kleen@xxxxxxxxx>
>---
> target-i386/cpu.c | 26 ++++++++++++++++++++++++++
> target-i386/cpu.h | 13 ++++++++++++-
> target-i386/kvm.c | 35 +++++++++++++++++++++++++++++++----
> 3 files changed, 69 insertions(+), 5 deletions(-)
...
>@@ -2786,6 +2798,20 @@ static void mce_init(X86CPU *cpu)
> && (cenv->features[FEAT_1_EDX] & (CPUID_MCE | CPUID_MCA)) ==
> (CPUID_MCE | CPUID_MCA)) {
> cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
>+
>+ if (cpu->enable_lmce) {
>+ if (lmce_supported()) {
>+ cenv->mcg_cap |= MCG_LMCE_P;
>+ cenv->msr_ia32_feature_control |=
>+ MSR_IA32_FEATURE_CONTROL_LMCE |
>+ MSR_IA32_FEATURE_CONTROL_LOCKED;
>+ } else {
>+ error_report("Warning: KVM unavailable or not support
>LMCE, "
>+ "LMCE disabled");
"... or LMCE not supported..."
Also, do not split the string for easier grepping.
--
Sent from a small device: formatting sux and brevity is inevitable.
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