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authorTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>2013-03-21 19:34:27 +0900
committerMarcelo Tosatti <mtosatti@redhat.com>2013-03-21 19:45:01 -0300
commit81f4f76bbc712a2dff8bb020057c554e285370e1 (patch)
tree14951f49387558deb4258cce5af8c98df9c9f7af /arch/x86/kvm/mmu.c
parent7ddca7e43c8f28f9419da81a0e7730b66aa60fe9 (diff)
KVM: MMU: Rename kvm_mmu_free_some_pages() to make_mmu_pages_available()
The current name "kvm_mmu_free_some_pages" should be used for something that actually frees some shadow pages, as we expect from the name, but what the function is doing is to make some, KVM_MIN_FREE_MMU_PAGES, shadow pages available: it does nothing when there are enough. This patch changes the name to reflect this meaning better; while doing this renaming, the code in the wrapper function is inlined into the main body since the whole function will be inlined into the only caller now. Signed-off-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
-rw-r--r--arch/x86/kvm/mmu.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 38f34c5361f4..633e30cfbd63 100644
--- 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;