diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 9 | ||||
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 1 |
2 files changed, 4 insertions, 6 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 834698d2459..c478ee25de6 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -291,7 +291,6 @@ static int mmu_topup_memory_caches(struct kvm_vcpu *vcpu) { int r; - kvm_mmu_free_some_pages(vcpu); r = mmu_topup_memory_cache(&vcpu->arch.mmu_pte_chain_cache, pte_chain_cache, 4); if (r) @@ -569,9 +568,6 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, { struct kvm_mmu_page *sp; - if (!vcpu->kvm->arch.n_free_mmu_pages) - return NULL; - sp = mmu_memory_cache_alloc(&vcpu->arch.mmu_page_header_cache, sizeof *sp); sp->spt = mmu_memory_cache_alloc(&vcpu->arch.mmu_page_cache, PAGE_SIZE); sp->gfns = mmu_memory_cache_alloc(&vcpu->arch.mmu_page_cache, PAGE_SIZE); @@ -1024,6 +1020,7 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn) page = gfn_to_page(vcpu->kvm, gfn); spin_lock(&vcpu->kvm->mmu_lock); + kvm_mmu_free_some_pages(vcpu); r = __nonpaging_map(vcpu, v, write, gfn, page); spin_unlock(&vcpu->kvm->mmu_lock); @@ -1275,6 +1272,7 @@ int kvm_mmu_load(struct kvm_vcpu *vcpu) if (r) goto out; spin_lock(&vcpu->kvm->mmu_lock); + kvm_mmu_free_some_pages(vcpu); mmu_alloc_roots(vcpu); spin_unlock(&vcpu->kvm->mmu_lock); kvm_x86_ops->set_cr3(vcpu, vcpu->arch.mmu.root_hpa); @@ -1413,6 +1411,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, pgprintk("%s: gpa %llx bytes %d\n", __FUNCTION__, gpa, bytes); mmu_guess_page_from_pte_write(vcpu, gpa, new, bytes); spin_lock(&vcpu->kvm->mmu_lock); + kvm_mmu_free_some_pages(vcpu); ++vcpu->kvm->stat.mmu_pte_write; kvm_mmu_audit(vcpu, "pre pte write"); if (gfn == vcpu->arch.last_pt_write_gfn @@ -1505,7 +1504,6 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva) void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) { - spin_lock(&vcpu->kvm->mmu_lock); while (vcpu->kvm->arch.n_free_mmu_pages < KVM_REFILL_PAGES) { struct kvm_mmu_page *sp; @@ -1514,7 +1512,6 @@ void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) kvm_mmu_zap_page(vcpu->kvm, sp); ++vcpu->kvm->stat.mmu_recycled; } - spin_unlock(&vcpu->kvm->mmu_lock); } int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u32 error_code) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index a35b83a4fef..349920556be 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -402,6 +402,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, page = gfn_to_page(vcpu->kvm, walker.gfn); spin_lock(&vcpu->kvm->mmu_lock); + kvm_mmu_free_some_pages(vcpu); shadow_pte = FNAME(fetch)(vcpu, addr, &walker, user_fault, write_fault, &write_pt, page); pgprintk("%s: shadow pte %p %llx ptwrite %d\n", __FUNCTION__, |