KVM: SVM: use __GFP_ZERO instead of clear_page()

Use __GFP_ZERO while alloc_page().

Signed-off-by: Haiwei Li <lihaiwei@tencent.com>
Message-Id: <20200916083621.5512-1-lihaiwei.kernel@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index ac830cd..f73f84d 100644 (file)
--- 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: