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Message-Id: <20220819022804.483914-1-kunyu@nfschina.com>
Date: Fri, 19 Aug 2022 10:28:04 +0800
From: Li kunyu <kunyu@...china.com>
To: kunyu@...china.com, seanjc@...gle.com
Cc: pbonzini@...hat.com, kvm@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2] KVM: Drop unnecessary initialization of "npages" in hva_to_pfn_slow() initialized and assigned, it is used after assignment
Used to reduce a mov instruction.
Reviewed-by: Sean Christopherson <seanjc@...gle.com>
Signed-off-by: Li kunyu <kunyu@...china.com>
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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