aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/x86.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index be3b4a073e72..d4f1dff258cc 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -828,9 +828,12 @@ int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3)
}
}
- memcpy(mmu->pdptrs, pdpte, sizeof(mmu->pdptrs));
- kvm_register_mark_dirty(vcpu, VCPU_EXREG_PDPTR);
- kvm_make_request(KVM_REQ_LOAD_MMU_PGD, vcpu);
+ kvm_register_mark_available(vcpu, VCPU_EXREG_PDPTR);
+ if (memcmp(mmu->pdptrs, pdpte, sizeof(mmu->pdptrs))) {
+ memcpy(mmu->pdptrs, pdpte, sizeof(mmu->pdptrs));
+ kvm_register_mark_dirty(vcpu, VCPU_EXREG_PDPTR);
+ kvm_make_request(KVM_REQ_LOAD_MMU_PGD, vcpu);
+ }
vcpu->arch.pdptrs_from_userspace = false;
return 1;