From: lihaiwei.kernel@gmail.com
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org
Cc: pbonzini@redhat.com, sean.j.christopherson@intel.com,
vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com,
joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, hpa@zytor.com, Haiwei Li <lihaiwei@tencent.com>
Subject: [PATCH] KVM: SVM: use __GFP_ZERO instead of clear_page()
Date: Wed, 16 Sep 2020 16:36:21 +0800 [thread overview]
Message-ID: <20200916083621.5512-1-lihaiwei.kernel@gmail.com> (raw)
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
next reply other threads:[~2020-09-16 8:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 8:36 lihaiwei.kernel [this message]
2020-09-17 9:45 ` [PATCH] KVM: SVM: use __GFP_ZERO instead of clear_page() Maxim Levitsky
2020-09-22 13:26 ` Paolo Bonzini
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