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yaml
---
r: 215752
b: refs/heads/master
c: e0df7b9
h: refs/heads/master
v: v3
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Dave Hansen authored and Avi Kivity committed Oct 24, 2010
1 parent 7ece299 commit 4efa2b0
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Showing 3 changed files with 11 additions and 9 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 61429142802b068609ffd8ef48d891e05eeea0b9
refs/heads/master: e0df7b9f6cee43c01d6f4a8491bccfd410cb86e1
11 changes: 4 additions & 7 deletions trunk/arch/x86/kvm/mmu.c
Original file line number Diff line number Diff line change
Expand Up @@ -1696,7 +1696,7 @@ void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages)
int used_pages;
LIST_HEAD(invalid_list);

used_pages = kvm->arch.n_alloc_mmu_pages - kvm->arch.n_free_mmu_pages;
used_pages = kvm->arch.n_alloc_mmu_pages - kvm_mmu_available_pages(kvm);
used_pages = max(0, used_pages);

/*
Expand Down Expand Up @@ -2959,18 +2959,15 @@ EXPORT_SYMBOL_GPL(kvm_mmu_unprotect_page_virt);

void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
{
int free_pages;
LIST_HEAD(invalid_list);

free_pages = vcpu->kvm->arch.n_free_mmu_pages;
while (free_pages < KVM_REFILL_PAGES &&
while (kvm_mmu_available_pages(vcpu->kvm) < KVM_REFILL_PAGES &&
!list_empty(&vcpu->kvm->arch.active_mmu_pages)) {
struct kvm_mmu_page *sp;

sp = container_of(vcpu->kvm->arch.active_mmu_pages.prev,
struct kvm_mmu_page, link);
free_pages += kvm_mmu_prepare_zap_page(vcpu->kvm, sp,
&invalid_list);
kvm_mmu_prepare_zap_page(vcpu->kvm, sp, &invalid_list);
++vcpu->kvm->stat.mmu_recycled;
}
kvm_mmu_commit_zap_page(vcpu->kvm, &invalid_list);
Expand Down Expand Up @@ -3145,7 +3142,7 @@ static int mmu_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)
idx = srcu_read_lock(&kvm->srcu);
spin_lock(&kvm->mmu_lock);
npages = kvm->arch.n_alloc_mmu_pages -
kvm->arch.n_free_mmu_pages;
kvm_mmu_available_pages(kvm);
cache_count += npages;
if (!kvm_freed && nr_to_scan > 0 && npages > 0) {
freed_pages = kvm_mmu_remove_some_alloc_mmu_pages(kvm,
Expand Down
7 changes: 6 additions & 1 deletion trunk/arch/x86/kvm/mmu.h
Original file line number Diff line number Diff line change
Expand Up @@ -50,9 +50,14 @@

int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]);

static inline unsigned int kvm_mmu_available_pages(struct kvm *kvm)
{
return kvm->arch.n_free_mmu_pages;
}

static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
{
if (unlikely(vcpu->kvm->arch.n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
if (unlikely(kvm_mmu_available_pages(vcpu->kvm)< KVM_MIN_FREE_MMU_PAGES))
__kvm_mmu_free_some_pages(vcpu);
}

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