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KVM: SVM: use __GFP_ZERO instead of clear_page 

Another small refactoring.

Suggested-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20200827171145.374620-5-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Maxim Levitsky 2020-08-27 20:11:41 +03:00 committed by Paolo Bonzini
parent f4c847a956
commit 0681de1b83
1 changed files with 2 additions and 4 deletions
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6
arch/x86/kvm/svm/svm.c
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@ -1190,11 +1190,11 @@ static int svm_create_vcpu(struct kvm_vcpu *vcpu)
svm = to_svm(vcpu);
err = -ENOMEM;
vmcb_page = alloc_page(GFP_KERNEL_ACCOUNT);
vmcb_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);
if (!vmcb_page)
goto out;
hsave_page = alloc_page(GFP_KERNEL_ACCOUNT);
hsave_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);
if (!hsave_page)
goto free_page1;
@ -1209,7 +1209,6 @@ static int svm_create_vcpu(struct kvm_vcpu *vcpu)
svm->avic_is_running = true;
svm->nested.hsave = page_address(hsave_page);
clear_page(svm->nested.hsave);
svm->msrpm = svm_vcpu_init_msrpm();
if (!svm->msrpm)
@ -1220,7 +1219,6 @@ static int svm_create_vcpu(struct kvm_vcpu *vcpu)
goto free_page3;
svm->vmcb = page_address(vmcb_page);
clear_page(svm->vmcb);
svm->vmcb_pa = __sme_set(page_to_pfn(vmcb_page) << PAGE_SHIFT);
svm->asid_generation = 0;
init_vmcb(svm);