diff mbox

[V2,5/7] KVM, pkeys: Add pkeys support for gva_to_gpa funcions

Message ID 1447660311-12003-6-git-send-email-huaitong.han@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Huaitong Han Nov. 16, 2015, 7:51 a.m. UTC 
This patch adds pkeys support for gva_to_gpa funcions.

Signed-off-by: Huaitong Han <huaitong.han@intel.com>
diff mbox

Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 7a84b83..bd942f3 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3960,6 +3960,7 @@  gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
 			      struct x86_exception *exception)
 {
 	u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
+	access |= kvm_read_cr4_bits(vcpu, X86_CR4_PKE) ? PFERR_PK_MASK : 0;
 	return vcpu->arch.walk_mmu->gva_to_gpa(vcpu, gva, access, exception);
 }
 
@@ -3976,6 +3977,7 @@  gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
 {
 	u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
 	access |= PFERR_WRITE_MASK;
+	access |= kvm_read_cr4_bits(vcpu, X86_CR4_PKE) ? PFERR_PK_MASK : 0;
 	return vcpu->arch.walk_mmu->gva_to_gpa(vcpu, gva, access, exception);
 }
 
@@ -4026,10 +4028,13 @@  static int kvm_fetch_guest_virt(struct x86_emulate_ctxt *ctxt,
 	u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
 	unsigned offset;
 	int ret;
+	gpa_t gpa;
+
+	access |= kvm_read_cr4_bits(vcpu, X86_CR4_PKE) ? PFERR_PK_MASK : 0;
 
 	/* Inline kvm_read_guest_virt_helper for speed.  */
-	gpa_t gpa = vcpu->arch.walk_mmu->gva_to_gpa(vcpu, addr, access|PFERR_FETCH_MASK,
-						    exception);
+	gpa = vcpu->arch.walk_mmu->gva_to_gpa(vcpu, addr,
+			access | PFERR_FETCH_MASK, exception);
 	if (unlikely(gpa == UNMAPPED_GVA))
 		return X86EMUL_PROPAGATE_FAULT;
 
@@ -4050,6 +4055,7 @@  int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
 {
 	struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
 	u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
+	access |= kvm_read_cr4_bits(vcpu, X86_CR4_PKE) ? PFERR_PK_MASK : 0;
 
 	return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, access,
 					  exception);
@@ -4073,9 +4079,13 @@  int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
 	void *data = val;
 	int r = X86EMUL_CONTINUE;
 
+	u32 access = PFERR_WRITE_MASK;
+
+	access |= kvm_read_cr4_bits(vcpu, X86_CR4_PKE) ? PFERR_PK_MASK : 0;
+
 	while (bytes) {
 		gpa_t gpa =  vcpu->arch.walk_mmu->gva_to_gpa(vcpu, addr,
-							     PFERR_WRITE_MASK,
+							     access,
 							     exception);
 		unsigned offset = addr & (PAGE_SIZE-1);
 		unsigned towrite = min(bytes, (unsigned)PAGE_SIZE - offset);