KVM: MMU: fix accessed bit set on prefault path

Retry #PF is the speculative path, so don't set the accessed bit

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 83d45cf0a61..d475b6b87dc 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2214,7 +2214,8 @@ static void direct_pte_prefetch(struct kvm_vcpu *vcpu, u64 *sptep)
 }
 
 static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,
-                        int map_writable, int level, gfn_t gfn, pfn_t pfn)
+                        int map_writable, int level, gfn_t gfn, pfn_t pfn,
+                        bool prefault)
 {
         struct kvm_shadow_walk_iterator iterator;
         struct kvm_mmu_page *sp;
@@ -2229,7 +2230,7 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,
                                 pte_access &= ~ACC_WRITE_MASK;
                         mmu_set_spte(vcpu, iterator.sptep, ACC_ALL, pte_access,
                                      0, write, 1, &pt_write,
-                                     level, gfn, pfn, false, map_writable);
+                                     level, gfn, pfn, prefault, map_writable);
                         direct_pte_prefetch(vcpu, iterator.sptep);
                         ++vcpu->stat.pf_fixed;
                         break;
@@ -2321,7 +2322,8 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn,
         if (mmu_notifier_retry(vcpu, mmu_seq))
                 goto out_unlock;
         kvm_mmu_free_some_pages(vcpu);
-        r = __direct_map(vcpu, v, write, map_writable, level, gfn, pfn);
+        r = __direct_map(vcpu, v, write, map_writable, level, gfn, pfn,
+                         prefault);
         spin_unlock(&vcpu->kvm->mmu_lock);
 
 
@@ -2685,7 +2687,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, u32 error_code,
                 goto out_unlock;
         kvm_mmu_free_some_pages(vcpu);
         r = __direct_map(vcpu, gpa, write, map_writable,
-                         level, gfn, pfn);
+                         level, gfn, pfn, prefault);
         spin_unlock(&vcpu->kvm->mmu_lock);
 
         return r;