Commit f2b4b7dd authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity

KVM: make EFER_RESERVED_BITS configurable for architecture code

This patch give the SVM and VMX implementations the ability to add some bits
the guest can set in its EFER register.
Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 0aac03f0
...@@ -41,7 +41,7 @@ ...@@ -41,7 +41,7 @@
| X86_CR4_OSXMMEXCPT | X86_CR4_VMXE)) | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
#define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
#define EFER_RESERVED_BITS 0xfffffffffffff2fe static u64 __read_mostly efer_reserved_bits = 0xfffffffffffff2fe;
#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM #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 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
...@@ -428,7 +428,7 @@ static u32 emulated_msrs[] = { ...@@ -428,7 +428,7 @@ static u32 emulated_msrs[] = {
static void set_efer(struct kvm_vcpu *vcpu, u64 efer) static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
{ {
if (efer & EFER_RESERVED_BITS) { if (efer & efer_reserved_bits) {
printk(KERN_DEBUG "set_efer: 0x%llx #GP, reserved bits\n", printk(KERN_DEBUG "set_efer: 0x%llx #GP, reserved bits\n",
efer); efer);
kvm_inject_gp(vcpu, 0); kvm_inject_gp(vcpu, 0);
...@@ -452,6 +452,13 @@ static void set_efer(struct kvm_vcpu *vcpu, u64 efer) ...@@ -452,6 +452,13 @@ static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
#endif #endif
void kvm_enable_efer_bits(u64 mask)
{
efer_reserved_bits &= ~mask;
}
EXPORT_SYMBOL_GPL(kvm_enable_efer_bits);
/* /*
* Writes msr value into into the appropriate "register". * Writes msr value into into the appropriate "register".
* Returns 0 on success, non-0 otherwise. * Returns 0 on success, non-0 otherwise.
......
...@@ -430,6 +430,7 @@ void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, ...@@ -430,6 +430,7 @@ void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
unsigned long *rflags); unsigned long *rflags);
void kvm_enable_efer_bits(u64);
int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
......
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