memslot rmap and lpage-info are never partly reused and nothing need
be freed when new memslot is created
Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4be4733..b0be7ec 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6856,19 +6856,22 @@ void kvm_arch_free_memslot(struct kvm_memory_slot *free,
{
int i;
+ if (dont && dont->arch.rmap[0] == free->arch.rmap[0])
+ return;
+
+ /* It is a empty memslot. */
+ if (!free->arch.rmap[0])
+ return;
+
for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) {
- if (!dont || free->arch.rmap[i] != dont->arch.rmap[i]) {
- kvm_kvfree(free->arch.rmap[i]);
- free->arch.rmap[i] = NULL;
- }
+ kvm_kvfree(free->arch.rmap[i]);
+ free->arch.rmap[i] = NULL;
+
if (i == 0)
continue;
- if (!dont || free->arch.lpage_info[i - 1] !=
- dont->arch.lpage_info[i - 1]) {
- kvm_kvfree(free->arch.lpage_info[i - 1]);
- free->arch.lpage_info[i - 1] = NULL;
- }
+ kvm_kvfree(free->arch.lpage_info[i - 1]);
+ free->arch.lpage_info[i - 1] = NULL;
}
}
--
1.7.7.6
--
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