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kvm: mmu: remove is_present_gpte()

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We have two versions of the above function.
To prevent confusion and bugs in the future, remove
the non-FNAME version entirely and replace all calls
with the actual check.

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Bandan Das 2016-07-12 18:18:50 -04:00 committed by Paolo Bonzini
parent 8d5cf1610d
commit 812f30b234
4 changed files with 3 additions and 8 deletions
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2
arch/x86/kvm/mmu.c
View File

@ -3189,7 +3189,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
MMU_WARN_ON(VALID_PAGE(root));
if (vcpu->arch.mmu.root_level == PT32E_ROOT_LEVEL) {
pdptr = vcpu->arch.mmu.get_pdptr(vcpu, i);
if (!is_present_gpte(pdptr)) {
if (!(pdptr & PT_PRESENT_MASK)) {
vcpu->arch.mmu.pae_root[i] = 0;
continue;
}

5
arch/x86/kvm/mmu.h
View File

@ -93,11 +93,6 @@ static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
return kvm_mmu_load(vcpu);
}
static inline int is_present_gpte(unsigned long pte)
{
return pte & PT_PRESENT_MASK;
}
/*
* Currently, we have two sorts of write-protection, a) the first one
* write-protects guest page to sync the guest modification, b) another one is

2
arch/x86/kvm/paging_tmpl.h
View File

@ -131,7 +131,7 @@ static inline void FNAME(protect_clean_gpte)(unsigned *access, unsigned gpte)
static inline int FNAME(is_present_gpte)(unsigned long pte)
{
#if PTTYPE != PTTYPE_EPT
return is_present_gpte(pte);
return pte & PT_PRESENT_MASK;
#else
return pte & 7;
#endif

2
arch/x86/kvm/x86.c
View File

@ -540,7 +540,7 @@ int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3)
goto out;
}
for (i = 0; i < ARRAY_SIZE(pdpte); ++i) {
if (is_present_gpte(pdpte[i]) &&
if ((pdpte[i] & PT_PRESENT_MASK) &&
(pdpte[i] &
vcpu->arch.mmu.guest_rsvd_check.rsvd_bits_mask[0][2])) {
ret = 0;