diff options
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/kvm_svm.h | 11 | ||||
| -rw-r--r-- | drivers/kvm/svm.c | 26 |
2 files changed, 20 insertions, 17 deletions
diff --git a/drivers/kvm/kvm_svm.h b/drivers/kvm/kvm_svm.h index a1a9eba50d4..a869983d683 100644 --- a/drivers/kvm/kvm_svm.h +++ b/drivers/kvm/kvm_svm.h @@ -9,17 +9,15 @@ #include "svm.h" #include "kvm.h" -static const u32 host_save_msrs[] = { +static const u32 host_save_user_msrs[] = { #ifdef CONFIG_X86_64 MSR_STAR, MSR_LSTAR, MSR_CSTAR, MSR_SYSCALL_MASK, MSR_KERNEL_GS_BASE, - MSR_FS_BASE, MSR_GS_BASE, + MSR_FS_BASE, #endif MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP, - MSR_IA32_DEBUGCTLMSR, /*MSR_IA32_LASTBRANCHFROMIP, - MSR_IA32_LASTBRANCHTOIP, MSR_IA32_LASTINTFROMIP,MSR_IA32_LASTINTTOIP,*/ }; -#define NR_HOST_SAVE_MSRS ARRAY_SIZE(host_save_msrs) +#define NR_HOST_SAVE_USER_MSRS ARRAY_SIZE(host_save_user_msrs) #define NUM_DB_REGS 4 struct vcpu_svm { @@ -32,7 +30,8 @@ struct vcpu_svm { u64 next_rip; - u64 host_msrs[NR_HOST_SAVE_MSRS]; + u64 host_user_msrs[NR_HOST_SAVE_USER_MSRS]; + u64 host_gs_base; unsigned long host_cr2; unsigned long host_db_regs[NUM_DB_REGS]; unsigned long host_dr6; diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index bddd0238869..9c15f32eea1 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -522,8 +522,6 @@ static void init_vmcb(struct vmcb *vmcb) control->msrpm_base_pa = msrpm_base; control->tsc_offset = 0; control->int_ctl = V_INTR_MASKING_MASK; - if (svm_has(SVM_FEATURE_LBRV)) - control->lbr_ctl = 1ULL; init_seg(&save->es); init_seg(&save->ss); @@ -611,7 +609,7 @@ static void svm_free_vcpu(struct kvm_vcpu *vcpu) static void svm_vcpu_load(struct kvm_vcpu *vcpu) { - int cpu; + int cpu, i; cpu = get_cpu(); if (unlikely(cpu != vcpu->cpu)) { @@ -626,10 +624,18 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu) vcpu->svm->vmcb->control.tsc_offset += delta; vcpu->cpu = cpu; } + + for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++) + rdmsrl(host_save_user_msrs[i], vcpu->svm->host_user_msrs[i]); } static void svm_vcpu_put(struct kvm_vcpu *vcpu) { + int i; + + for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++) + wrmsrl(host_save_user_msrs[i], vcpu->svm->host_user_msrs[i]); + rdtscll(vcpu->host_tsc); put_cpu(); } @@ -815,18 +821,16 @@ static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg) static void load_host_msrs(struct kvm_vcpu *vcpu) { - int i; - - for ( i = 0; i < NR_HOST_SAVE_MSRS; i++) - wrmsrl(host_save_msrs[i], vcpu->svm->host_msrs[i]); +#ifdef CONFIG_X86_64 + wrmsrl(MSR_GS_BASE, vcpu->svm->host_gs_base); +#endif } static void save_host_msrs(struct kvm_vcpu *vcpu) { - int i; - - for ( i = 0; i < NR_HOST_SAVE_MSRS; i++) - rdmsrl(host_save_msrs[i], vcpu->svm->host_msrs[i]); +#ifdef CONFIG_X86_64 + rdmsrl(MSR_GS_BASE, vcpu->svm->host_gs_base); +#endif } static void new_asid(struct kvm_vcpu *vcpu, struct svm_cpu_data *svm_data) |