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Subject[PATCH 1/5] KVM MMU: fix objects free
Where to alloc, where to free

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
arch/x86/kvm/mmu.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 604eb3f..67da751 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -304,10 +304,11 @@ static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache,
return 0;
}

-static void mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc)
+static void mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc,
+ struct kmem_cache *cache)
{
while (mc->nobjs)
- kfree(mc->objects[--mc->nobjs]);
+ kmem_cache_free(cache, mc->objects[--mc->nobjs]);
}

static int mmu_topup_memory_cache_page(struct kvm_mmu_memory_cache *cache,
@@ -355,10 +356,11 @@ out:

static void mmu_free_memory_caches(struct kvm_vcpu *vcpu)
{
- mmu_free_memory_cache(&vcpu->arch.mmu_pte_chain_cache);
- mmu_free_memory_cache(&vcpu->arch.mmu_rmap_desc_cache);
+ mmu_free_memory_cache(&vcpu->arch.mmu_pte_chain_cache, pte_chain_cache);
+ mmu_free_memory_cache(&vcpu->arch.mmu_rmap_desc_cache, rmap_desc_cache);
mmu_free_memory_cache_page(&vcpu->arch.mmu_page_cache);
- mmu_free_memory_cache(&vcpu->arch.mmu_page_header_cache);
+ mmu_free_memory_cache(&vcpu->arch.mmu_page_header_cache,
+ mmu_page_header_cache);
}

static void *mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc,
@@ -379,7 +381,7 @@ static struct kvm_pte_chain *mmu_alloc_pte_chain(struct kvm_vcpu *vcpu)

static void mmu_free_pte_chain(struct kvm_pte_chain *pc)
{
- kfree(pc);
+ kmem_cache_free(pte_chain_cache, pc);
}

static struct kvm_rmap_desc *mmu_alloc_rmap_desc(struct kvm_vcpu *vcpu)
@@ -390,7 +392,7 @@ static struct kvm_rmap_desc *mmu_alloc_rmap_desc(struct kvm_vcpu *vcpu)

static void mmu_free_rmap_desc(struct kvm_rmap_desc *rd)
{
- kfree(rd);
+ kmem_cache_free(rmap_desc_cache, rd);
}

/*
@@ -897,7 +899,7 @@ static void kvm_mmu_free_page(struct kvm *kvm, struct kvm_mmu_page *sp)
list_del(&sp->link);
__free_page(virt_to_page(sp->spt));
__free_page(virt_to_page(sp->gfns));
- kfree(sp);
+ kmem_cache_free(mmu_page_header_cache, sp);
++kvm->arch.n_free_mmu_pages;
}

--
1.6.1.2


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