[PATCH 03/12] arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages
Marc Zyngier
marc.zyngier at arm.com
Sat Oct 18 04:56:53 PDT 2014
From: Ard Biesheuvel <ard.biesheuvel at linaro.org>
Pass __GFP_ZERO to __get_free_pages() instead of calling memset()
explicitly.
Acked-by: Marc Zyngier <marc.zyngier at arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>
---
arch/arm/kvm/mmu.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index eea0306..8f0c7a4 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -528,11 +528,10 @@ int kvm_alloc_stage2_pgd(struct kvm *kvm)
return -EINVAL;
}
- pgd = (pgd_t *)__get_free_pages(GFP_KERNEL, S2_PGD_ORDER);
+ pgd = (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, S2_PGD_ORDER);
if (!pgd)
return -ENOMEM;
- memset(pgd, 0, PTRS_PER_S2_PGD * sizeof(pgd_t));
kvm_clean_pgd(pgd);
kvm->arch.pgd = pgd;
--
2.1.1
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