KVM: MMU: cleanup pte write path
This patch does:
- call vcpu->arch.mmu.update_pte directly
- use gfn_to_pfn_atomic in update_pte path
The suggestion is from Avi.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index f08314f..c8af099 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -255,6 +255,8 @@
int (*sync_page)(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *sp);
void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
+ void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+ u64 *spte, const void *pte, unsigned long mmu_seq);
hpa_t root_hpa;
int root_level;
int shadow_root_level;
@@ -335,11 +337,6 @@
u64 *last_pte_updated;
gfn_t last_pte_gfn;
- struct {
- pfn_t pfn; /* pfn corresponding to that gfn */
- unsigned long mmu_seq;
- } update_pte;
-
struct fpu guest_fpu;
u64 xcr0;