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KVM: explicitly set rmap_head->val to 0 in pte_list_desc_remove_entry()

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When we reach here, we have desc->sptes[j] = NULL with j = 0.
So we can replace desc->sptes[0] with 0 to make it more clear.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Miaohe Lin 2019-12-05 11:40:16 +08:00 committed by Paolo Bonzini
parent d29c03a587
commit fe3c2b4c22
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/mmu/mmu.c
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@ -1414,7 +1414,7 @@ pte_list_desc_remove_entry(struct kvm_rmap_head *rmap_head,
if (j != 0)
return;
if (!prev_desc && !desc->more)
rmap_head->val = (unsigned long)desc->sptes[0];
rmap_head->val = 0;
else
if (prev_desc)
prev_desc->more = desc->more;