GCC (gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)) complains
of this warning:
arch/x86/kvm//mmu.c:3332:9: warning: ‘leaf’ may be used uninitialized in this function [-Wmaybe-uninitialized]
while (root >= leaf) {
^
arch/x86/kvm//mmu.c:3304:12: note: ‘leaf’ was declared here
int root, leaf;
It's true as shadow_walk_init() may stop the loop
Signed-off-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 70c375f..a8a5b8d 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3301,7 +3301,7 @@ walk_shadow_page_get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr, u64 *sptep)
{
struct kvm_shadow_walk_iterator iterator;
u64 sptes[PT64_ROOT_LEVEL], spte = 0ull;
- int root, leaf;
+ int root, leaf = PT64_ROOT_LEVEL;
bool reserved = false;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
--
2.4.3
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