diff options
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index b80b4d14163..4d179d10637 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -55,6 +55,7 @@ struct vmcs { struct vcpu_vmx { struct kvm_vcpu vcpu; + struct list_head local_vcpus_link; int launched; u8 fail; u32 idt_vectoring_info; @@ -93,6 +94,7 @@ static int init_rmode(struct kvm *kvm); static DEFINE_PER_CPU(struct vmcs *, vmxarea); static DEFINE_PER_CPU(struct vmcs *, current_vmcs); +static DEFINE_PER_CPU(struct list_head, vcpus_on_cpu); static struct page *vmx_io_bitmap_a; static struct page *vmx_io_bitmap_b; @@ -331,6 +333,9 @@ static void __vcpu_clear(void *arg) if (per_cpu(current_vmcs, cpu) == vmx->vmcs) per_cpu(current_vmcs, cpu) = NULL; rdtscll(vmx->vcpu.arch.host_tsc); + list_del(&vmx->local_vcpus_link); + vmx->vcpu.cpu = -1; + vmx->launched = 0; } static void vcpu_clear(struct vcpu_vmx *vmx) @@ -338,7 +343,6 @@ static void vcpu_clear(struct vcpu_vmx *vmx) if (vmx->vcpu.cpu == -1) return; smp_call_function_single(vmx->vcpu.cpu, __vcpu_clear, vmx, 1); - vmx->launched = 0; } static inline void vpid_sync_vcpu_all(struct vcpu_vmx *vmx) @@ -617,6 +621,10 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) vcpu_clear(vmx); kvm_migrate_timers(vcpu); vpid_sync_vcpu_all(vmx); + local_irq_disable(); + list_add(&vmx->local_vcpus_link, + &per_cpu(vcpus_on_cpu, cpu)); + local_irq_enable(); } if (per_cpu(current_vmcs, cpu) != vmx->vmcs) { @@ -1022,6 +1030,7 @@ static void hardware_enable(void *garbage) u64 phys_addr = __pa(per_cpu(vmxarea, cpu)); u64 old; + INIT_LIST_HEAD(&per_cpu(vcpus_on_cpu, cpu)); rdmsrl(MSR_IA32_FEATURE_CONTROL, old); if ((old & (MSR_IA32_FEATURE_CONTROL_LOCKED | MSR_IA32_FEATURE_CONTROL_VMXON_ENABLED)) @@ -1037,8 +1046,19 @@ static void hardware_enable(void *garbage) : "memory", "cc"); } +static void vmclear_local_vcpus(void) +{ + int cpu = raw_smp_processor_id(); + struct vcpu_vmx *vmx, *n; + + list_for_each_entry_safe(vmx, n, &per_cpu(vcpus_on_cpu, cpu), + local_vcpus_link) + __vcpu_clear(vmx); +} + static void hardware_disable(void *garbage) { + vmclear_local_vcpus(); asm volatile (__ex(ASM_VMX_VMXOFF) : : : "cc"); write_cr4(read_cr4() & ~X86_CR4_VMXE); } @@ -2967,7 +2987,7 @@ static void vmx_free_vmcs(struct kvm_vcpu *vcpu) struct vcpu_vmx *vmx = to_vmx(vcpu); if (vmx->vmcs) { - on_each_cpu(__vcpu_clear, vmx, 1); + vcpu_clear(vmx); free_vmcs(vmx->vmcs); vmx->vmcs = NULL; } |