From patchwork Thu Jan 24 15:43:53 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 2033551 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 0B4643FDBC for ; Thu, 24 Jan 2013 16:15:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753890Ab3AXQPZ (ORCPT ); Thu, 24 Jan 2013 11:15:25 -0500 Received: from mnementh.archaic.org.uk ([81.2.115.146]:58485 "EHLO mnementh.archaic.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753195Ab3AXQPY (ORCPT ); Thu, 24 Jan 2013 11:15:24 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.72) (envelope-from ) id 1TyOy8-0002zf-Q9; Thu, 24 Jan 2013 15:44:00 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Cc: patches@linaro.org, kvm@vger.kernel.org, Marcelo Tosatti , kvmarm@lists.cs.columbia.edu, Blue Swirl , =?UTF-8?q?Andreas=20F=C3=A4rber?= , Gleb Natapov Subject: [RFC v5 1/8] oslib-posix: Align to permit transparent hugepages on ARM Linux Date: Thu, 24 Jan 2013 15:43:53 +0000 Message-Id: <1359042240-11482-2-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1359042240-11482-1-git-send-email-peter.maydell@linaro.org> References: <1359042240-11482-1-git-send-email-peter.maydell@linaro.org> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org ARM Linux (like x86-64 Linux) can use transparent hugepages for KVM if memory blocks are 2MiB aligned; set QEMU_VMALLOC_ALIGN accordingly. Signed-off-by: Peter Maydell --- util/oslib-posix.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 4f5ec67..4ad9940 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -35,7 +35,7 @@ extern int daemon(int, int); #endif -#if defined(__linux__) && defined(__x86_64__) +#if defined(__linux__) && (defined(__x86_64__) || defined(__arm__)) /* Use 2 MiB alignment so transparent hugepages can be used by KVM. Valgrind does not support alignments larger than 1 MiB, therefore we need special code which handles running on Valgrind. */