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KVM: x86: return 0 in case kvm_mmu_memory_cache has min number of objects

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The code tries to pre-allocate *min* number of objects, so it is ok to
return 0 when the kvm_mmu_memory_cache meets the requirement.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Wei Yang 2018-09-04 23:57:32 +08:00 committed by Paolo Bonzini
parent 55c1dcd80b
commit daefb7949e
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kvm/mmu.c
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@ -932,7 +932,7 @@ static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache,
while (cache->nobjs < ARRAY_SIZE(cache->objects)) {
obj = kmem_cache_zalloc(base_cache, GFP_KERNEL);
if (!obj)
return -ENOMEM;
return cache->nobjs >= min ? 0 : -ENOMEM;
cache->objects[cache->nobjs++] = obj;
}
return 0;
@ -960,7 +960,7 @@ static int mmu_topup_memory_cache_page(struct kvm_mmu_memory_cache *cache,
while (cache->nobjs < ARRAY_SIZE(cache->objects)) {
page = (void *)__get_free_page(GFP_KERNEL_ACCOUNT);
if (!page)
return -ENOMEM;
return cache->nobjs >= min ? 0 : -ENOMEM;
cache->objects[cache->nobjs++] = page;
}
return 0;