From: Oliver Upton <oupton@google.com>
To: kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>, Oliver Upton <oupton@google.com>
Subject: [PATCH] KVM: Suppress warning in __kvm_gfn_to_hva_cache_init
Date: Tue, 18 Feb 2020 10:47:56 -0800 [thread overview]
Message-ID: <20200218184756.242904-1-oupton@google.com> (raw)
Particularly draconian compilers warn of a possible uninitialized use of
the nr_pages_avail variable. Silence this warning by initializing it to
zero.
Signed-off-by: Oliver Upton <oupton@google.com>
---
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 70f03ce0e5c1..dc8a67ad082d 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2219,7 +2219,7 @@ static int __kvm_gfn_to_hva_cache_init(struct kvm_memslots *slots,
gfn_t start_gfn = gpa >> PAGE_SHIFT;
gfn_t end_gfn = (gpa + len - 1) >> PAGE_SHIFT;
gfn_t nr_pages_needed = end_gfn - start_gfn + 1;
- gfn_t nr_pages_avail;
+ gfn_t nr_pages_avail = 0;
/* Update ghc->generation before performing any error checks. */
ghc->generation = slots->generation;
--
2.25.0.265.gbab2e86ba0-goog
next reply other threads:[~2020-02-18 18:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 18:47 Oliver Upton [this message]
2020-02-18 19:07 ` [PATCH] KVM: Suppress warning in __kvm_gfn_to_hva_cache_init Sean Christopherson
2020-02-18 21:34 ` Oliver Upton
2020-02-18 22:21 ` Sean Christopherson
2020-02-20 11:22 ` Paolo Bonzini
2020-02-21 4:32 ` Oliver Upton
2020-02-21 8:24 ` Paolo Bonzini
2020-02-21 8:34 ` Oliver Upton
2020-02-21 9:05 ` Paolo Bonzini
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