From patchwork Sat Oct 18 11:56:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 5099701 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 689BF9F38C for ; Sat, 18 Oct 2014 11:57:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8D74720165 for ; Sat, 18 Oct 2014 11:57:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A057920166 for ; Sat, 18 Oct 2014 11:57:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751333AbaJRL5R (ORCPT ); Sat, 18 Oct 2014 07:57:17 -0400 Received: from inca-roads.misterjones.org ([213.251.177.50]:41992 "EHLO inca-roads.misterjones.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751038AbaJRL5O (ORCPT ); Sat, 18 Oct 2014 07:57:14 -0400 Received: from [90.219.10.17] (helo=zomby-woof.wild-wind.fr.eu.org) by cheepnis.misterjones.org with esmtpsa (TLSv1.2:AES128-SHA256:128) (Exim 4.80) (envelope-from ) id 1XfSdB-0005Fz-6c; Sat, 18 Oct 2014 13:57:09 +0200 From: Marc Zyngier To: Gleb Natapov , Paolo Bonzini Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Christoffer Dall , Ard Biesheuvel Subject: [PATCH 03/12] arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages Date: Sat, 18 Oct 2014 12:56:53 +0100 Message-Id: <1413633422-14907-4-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1413633422-14907-1-git-send-email-marc.zyngier@arm.com> References: <1413633422-14907-1-git-send-email-marc.zyngier@arm.com> X-SA-Exim-Connect-IP: 90.219.10.17 X-SA-Exim-Rcpt-To: gleb@kernel.org, pbonzini@redhat.com, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, christoffer.dall@linaro.org, ard.biesheuvel@linaro.org X-SA-Exim-Mail-From: marc.zyngier@arm.com X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ard Biesheuvel Pass __GFP_ZERO to __get_free_pages() instead of calling memset() explicitly. Acked-by: Marc Zyngier Signed-off-by: Ard Biesheuvel Signed-off-by: Christoffer Dall --- 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;