KVM: MMU: Rename kvm_mmu_free_some_pages() to make_mmu_pages_available()

[karo-tx-linux.git] / arch / x86 / kvm / mmu.c

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 38f34c5361f46e842103e2908f482da1c8826c5b..633e30cfbd6393d752fefa2c6c3190e9d9784b56 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1501,12 +1501,14 @@ static void drop_parent_pte(struct kvm_mmu_page *sp,
        mmu_spte_clear_no_track(parent_pte);
 }
 
+static void make_mmu_pages_available(struct kvm_vcpu *vcpu);
+
 static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu,
                                               u64 *parent_pte, int direct)
 {
        struct kvm_mmu_page *sp;
 
-       kvm_mmu_free_some_pages(vcpu);
+       make_mmu_pages_available(vcpu);
 
        sp = mmu_memory_cache_alloc(&vcpu->arch.mmu_page_header_cache);
        sp->spt = mmu_memory_cache_alloc(&vcpu->arch.mmu_page_cache);
@@ -4010,10 +4012,13 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva)
 }
 EXPORT_SYMBOL_GPL(kvm_mmu_unprotect_page_virt);
 
-void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
+static void make_mmu_pages_available(struct kvm_vcpu *vcpu)
 {
        LIST_HEAD(invalid_list);
 
+       if (likely(kvm_mmu_available_pages(vcpu->kvm) >= KVM_MIN_FREE_MMU_PAGES))
+               return;
+
        while (kvm_mmu_available_pages(vcpu->kvm) < KVM_REFILL_PAGES) {
                if (!prepare_zap_oldest_mmu_page(vcpu->kvm, &invalid_list))
                        break;