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KVM: do not release the error page

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After commit a2766325cf, the error page is replaced by the
error code, it need not be released anymore

[ The patch has been compiling tested for powerpc ]

Signed-off-by: Xiao Guangrong <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
This commit is contained in:
Xiao Guangrong 2012-08-03 15:42:52 +08:00 • committed by Avi Kivity
commit 32cad84f44
8 changed files with 12 additions and 19 deletions
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4
virt/kvm/async_pf.c
View file

@ -111,7 +111,7 @@ void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu)
list_entry(vcpu->async_pf.done.next,
typeof(*work), link);
list_del(&work->link);
if (work->page)
if (!is_error_page(work->page))
kvm_release_page_clean(work->page);
kmem_cache_free(async_pf_cache, work);
}
@ -138,7 +138,7 @@ void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu)
list_del(&work->queue);
vcpu->async_pf.queued--;
if (work->page)
if (!is_error_page(work->page))
kvm_release_page_clean(work->page);
kmem_cache_free(async_pf_cache, work);
}

5
virt/kvm/kvm_main.c
View file

@ -1186,8 +1186,9 @@ EXPORT_SYMBOL_GPL(gfn_to_page);
void kvm_release_page_clean(struct page *page)
{
if (!is_error_page(page))
kvm_release_pfn_clean(page_to_pfn(page));
WARN_ON(is_error_page(page));
kvm_release_pfn_clean(page_to_pfn(page));
}
EXPORT_SYMBOL_GPL(kvm_release_page_clean);