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Message-Id: <20211118110814.2568-10-jiangshanlai@gmail.com>
Date: Thu, 18 Nov 2021 19:08:08 +0800
From: Lai Jiangshan <jiangshanlai@...il.com>
To: linux-kernel@...r.kernel.org
Cc: kvm@...r.kernel.org, Lai Jiangshan <laijs@...ux.alibaba.com>,
Paolo Bonzini <pbonzini@...hat.com>,
Sean Christopherson <seanjc@...gle.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Joerg Roedel <joro@...tes.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 09/15] KVM: SVM: Allocate sd->save_area with __GFP_ZERO
From: Lai Jiangshan <laijs@...ux.alibaba.com>
And remove clear_page() on it.
Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
---
arch/x86/kvm/svm/svm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 33b434fd5d9b..d855ba664fc2 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -585,12 +585,10 @@ static int svm_cpu_init(int cpu)
if (!sd)
return ret;
sd->cpu = cpu;
- sd->save_area = alloc_page(GFP_KERNEL);
+ sd->save_area = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (!sd->save_area)
goto free_cpu_data;
- clear_page(page_address(sd->save_area));
-
ret = sev_cpu_init(sd);
if (ret)
goto free_save_area;
--
2.19.1.6.gb485710b
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