[PATCH v2] KVM: Drop unnecessary initialization of "npages" in hva_to_pfn_slow() initialized and assigned, it is used after assignment

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Used to reduce a mov instruction.

Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>
Signed-off-by: Li kunyu <kunyu@xxxxxxxxxxxx>

v2:
  Change patch title.
---
 virt/kvm/kvm_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 82f2b90718a9..f047799bf19b 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2516,7 +2516,7 @@ static int hva_to_pfn_slow(unsigned long addr, bool *async, bool write_fault,
 {
 	unsigned int flags = FOLL_HWPOISON;
 	struct page *page;
-	int npages = 0;
+	int npages;
 
 	might_sleep();
 
-- 
2.18.2




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