KVM: MMU: Remove #ifdef CONFIG_X86_64 to support 4 level EPT

PATCH In review Yang, Sheng 1 participant 1 message Apr 25, 2008

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Yang, Sheng

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2008-04-25 08:26 UTC #0 lore raw

PATCH 5/8 KVM: MMU: Remove #ifdef CONFIG_X86_64 to support 4 level EPT

From 169c62e33ea1dbadc8d2fbc3d4880e63caa4d6ab Mon Sep 17 00:00:00 2001
From: Sheng Yang <[email protected]>
Date: Fri, 25 Apr 2008 21:44:42 +0800
Subject: [PATCH 5/8] KVM: MMU: Remove #ifdef CONFIG_X86_64 to support 4 level EPT

Currently EPT level is 4 for both PAE and 32e. The patch remove the #ifdef for alloc root_hpa and free root_hpa to support EPT.

Signed-off-by Sheng Yang <[email protected]>

---
 arch/x86/kvm/mmu.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

arch/x86/kvm/mmu.c +0 -4

index c28a36b..3dbedf1 100644
@@ -1233,7 +1233,6 @@ static void mmu_free_roots(struct kvm_vcpu *vcpu)
 	if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
 		return;
 	spin_lock(&vcpu->kvm->mmu_lock);
-#ifdef CONFIG_X86_64
 	if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_LEVEL) {
 		hpa_t root = vcpu->arch.mmu.root_hpa;

@@ -1245,7 +1244,6 @@ static void mmu_free_roots(struct kvm_vcpu *vcpu)
 		spin_unlock(&vcpu->kvm->mmu_lock);
 		return;
 	}
-#endif
 	for (i = 0; i < 4; ++i) {
 		hpa_t root = vcpu->arch.mmu.pae_root[i];

@@ -1271,7 +1269,6 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
 
 	root_gfn = vcpu->arch.cr3 >> PAGE_SHIFT;
 
-#ifdef CONFIG_X86_64
 	if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_LEVEL) {
 		hpa_t root = vcpu->arch.mmu.root_hpa;

@@ -1286,7 +1283,6 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
 		vcpu->arch.mmu.root_hpa = root;
 		return;
 	}
-#endif
 	metaphysical = !is_paging(vcpu);
 	if (tdp_enabled)
 		metaphysical = 1;

--
1.5.4.5

Currently EPT level is 4 for both PAE and 32e. The patch remove the #ifdef for alloc root_hpa and free root_hpa to support EPT.

Signed-off-by Sheng Yang <[email protected]>

---
 arch/x86/kvm/mmu.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

arch/x86/kvm/mmu.c +0 -4

index c28a36b..3dbedf1 100644
@@ -1233,7 +1233,6 @@ static void mmu_free_roots(struct kvm_vcpu *vcpu)
 	if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
 		return;
 	spin_lock(&vcpu->kvm->mmu_lock);
-#ifdef CONFIG_X86_64
 	if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_LEVEL) {
 		hpa_t root = vcpu->arch.mmu.root_hpa;

@@ -1245,7 +1244,6 @@ static void mmu_free_roots(struct kvm_vcpu *vcpu)
 		spin_unlock(&vcpu->kvm->mmu_lock);
 		return;
 	}
-#endif
 	for (i = 0; i < 4; ++i) {
 		hpa_t root = vcpu->arch.mmu.pae_root[i];

@@ -1271,7 +1269,6 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
 
 	root_gfn = vcpu->arch.cr3 >> PAGE_SHIFT;
 
-#ifdef CONFIG_X86_64
 	if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_LEVEL) {
 		hpa_t root = vcpu->arch.mmu.root_hpa;

@@ -1286,7 +1283,6 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
 		vcpu->arch.mmu.root_hpa = root;
 		return;
 	}
-#endif
 	metaphysical = !is_paging(vcpu);
 	if (tdp_enabled)
 		metaphysical = 1;

Signature · 1 line

1.5.4.5

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