diff options
Diffstat (limited to 'target/i386/cpu.h')
| -rw-r--r-- | target/i386/cpu.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 9661f9f..6730df5 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -386,6 +386,7 @@ typedef enum X86Seg { #define ARCH_CAP_TSX_CTRL_MSR (1<<7) #define MSR_IA32_PERF_CAPABILITIES 0x345 +#define PERF_CAP_LBR_FMT 0x3f #define MSR_IA32_TSX_CTRL 0x122 #define MSR_IA32_TSCDEADLINE 0x6e0 @@ -1810,6 +1811,15 @@ struct ArchCPU { */ bool enable_pmu; + /* + * Enable LBR_FMT bits of IA32_PERF_CAPABILITIES MSR. + * This can't be initialized with a default because it doesn't have + * stable ABI support yet. It is only allowed to pass all LBR_FMT bits + * returned by kvm_arch_get_supported_msr_feature()(which depends on both + * host CPU and kernel capabilities) to the guest. + */ + uint64_t lbr_fmt; + /* LMCE support can be enabled/disabled via cpu option 'lmce=on/off'. It is * disabled by default to avoid breaking migration between QEMU with * different LMCE configurations. |