KVM: VMX: Always return old for clear_flush_young() when using EPT
As well as discard fake accessed bit and dirty bit of EPT.
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 0bfe2bd..3da2508 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -711,6 +711,10 @@
u64 *spte;
int young = 0;
+ /* always return old for EPT */
+ if (!shadow_accessed_mask)
+ return 0;
+
spte = rmap_next(kvm, rmapp, NULL);
while (spte) {
int _young;
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 2a69773..7041cc5 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3301,8 +3301,7 @@
kvm_mmu_set_base_ptes(VMX_EPT_READABLE_MASK |
VMX_EPT_WRITABLE_MASK |
VMX_EPT_DEFAULT_MT << VMX_EPT_MT_EPTE_SHIFT);
- kvm_mmu_set_mask_ptes(0ull, VMX_EPT_FAKE_ACCESSED_MASK,
- VMX_EPT_FAKE_DIRTY_MASK, 0ull,
+ kvm_mmu_set_mask_ptes(0ull, 0ull, 0ull, 0ull,
VMX_EPT_EXECUTABLE_MASK);
kvm_enable_tdp();
} else
diff --git a/arch/x86/kvm/vmx.h b/arch/x86/kvm/vmx.h
index 425a134..23e8373 100644
--- a/arch/x86/kvm/vmx.h
+++ b/arch/x86/kvm/vmx.h
@@ -370,8 +370,6 @@
#define VMX_EPT_READABLE_MASK 0x1ull
#define VMX_EPT_WRITABLE_MASK 0x2ull
#define VMX_EPT_EXECUTABLE_MASK 0x4ull
-#define VMX_EPT_FAKE_ACCESSED_MASK (1ull << 62)
-#define VMX_EPT_FAKE_DIRTY_MASK (1ull << 63)
#define VMX_EPT_IDENTITY_PAGETABLE_ADDR 0xfffbc000ul