diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/svm.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 10 |
3 files changed, 16 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 1a582f1..ff3bc74 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -403,6 +403,9 @@ static __init int svm_hardware_setup(void) set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_ESP, 1, 1); set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_EIP, 1, 1); + if (boot_cpu_has(X86_FEATURE_NX)) + kvm_enable_efer_bits(EFER_NX); + for_each_online_cpu(cpu) { r = svm_cpu_init(cpu); if (r) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 1157e8a..a509910 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1117,6 +1117,10 @@ static __init int hardware_setup(void) { if (setup_vmcs_config(&vmcs_config) < 0) return -EIO; + + if (boot_cpu_has(X86_FEATURE_NX)) + kvm_enable_efer_bits(EFER_NX); + return alloc_kvm_area(); } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index ec9265b..db16f23 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -41,7 +41,15 @@ | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE)) #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) -static u64 __read_mostly efer_reserved_bits = 0xfffffffffffff2fe; +/* EFER defaults: + * - enable syscall per default because its emulated by KVM + * - enable LME and LMA per default on 64 bit KVM + */ +#ifdef CONFIG_X86_64 +static u64 __read_mostly efer_reserved_bits = 0xfffffffffffffafeULL; +#else +static u64 __read_mostly efer_reserved_bits = 0xfffffffffffffffeULL; +#endif #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU |