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Subject[PATCH] KVM: SVM: use __GFP_ZERO instead of clear_page()
Date
From: Haiwei Li <lihaiwei@tencent.com>

Use __GFP_ZERO while alloc_page().

Signed-off-by: Haiwei Li <lihaiwei@tencent.com>
---
arch/x86/kvm/svm/avic.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index ac830cd50830..f73f84d56452 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -153,20 +153,18 @@ int avic_vm_init(struct kvm *kvm)
return 0;

/* Allocating physical APIC ID table (4KB) */
- p_page = alloc_page(GFP_KERNEL_ACCOUNT);
+ p_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);
if (!p_page)
goto free_avic;

kvm_svm->avic_physical_id_table_page = p_page;
- clear_page(page_address(p_page));

/* Allocating logical APIC ID table (4KB) */
- l_page = alloc_page(GFP_KERNEL_ACCOUNT);
+ l_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);
if (!l_page)
goto free_avic;

kvm_svm->avic_logical_id_table_page = l_page;
- clear_page(page_address(l_page));

spin_lock_irqsave(&svm_vm_data_hash_lock, flags);
again:
--
2.18.4
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