From patchwork Mon Aug 14 14:24:08 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Grall X-Patchwork-Id: 9898993 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A0714602CA for ; Mon, 14 Aug 2017 14:27:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5E32128528 for ; Mon, 14 Aug 2017 14:27:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5303D2868B; Mon, 14 Aug 2017 14:27:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B189028528 for ; Mon, 14 Aug 2017 14:27:18 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dhGIa-0000gw-91; Mon, 14 Aug 2017 14:24:56 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dhGIZ-0000fZ-Od for xen-devel@lists.xen.org; Mon, 14 Aug 2017 14:24:55 +0000 Received: from [193.109.254.147] by server-5.bemta-6.messagelabs.com id DD/A8-03368-7B2B1995; Mon, 14 Aug 2017 14:24:55 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrBLMWRWlGSWpSXmKPExsVysyfVTXfbpom RBrc2qVss+biYxYHR4+ju30wBjFGsmXlJ+RUJrBmHG86zF6xgq5gw8wBzA+Nc1i5GLg4hgc2M Ep1/57JDOKcZJfrntjF2MXJysAloStz5/IkJxBYRkJa49vkyWJxZIFLi8Icf7CC2sICvxO8Xv cxdjBwcLAKqEhN2uIOEeQWsJFYvuQJWLiEgL7Gr7SIriM0JFO+8u5MFxBYSsJQ4sXo22wRG7g WMDKsYNYpTi8pSi3QNDfSSijLTM0pyEzNzgDwzvdzU4uLE9NScxKRiveT83E2MQP8yAMEOxuP v4w4xSnIwKYnyJvj0RgrxJeWnVGYkFmfEF5XmpBYfYpTh4FCS4E3dODFSSLAoNT21Ii0zBxho MGkJDh4lEd5ZIGne4oLE3OLMdIjUKUZjjqYPW74wcbya8P8bkxBLXn5eqpQ4bzlIqQBIaUZpH twgWARcYpSVEuZlBDpNiKcgtSg3swRV/hWjOAejkjDvZpApPJl5JXD7XgGdwgR0Sh/IF7zFJY kIKakGxkalOxwV+1ukg5X2iGWvPWjxkm2drV/SPEOn7k0l9vwfMnofzxNO321+59rVUJkuqYz C535iH4S++nunyfnu3Hlct/p4tqPb8rTKLz8mXrBxFSydGPbtdcepO8FR3jKOGyUOXf6kq7Cd Y/Fufy4eh7+aa5m9WCfa/RO8rvRPI+59nOuNGWaXlViKMxINtZiLihMBiCQPDHsCAAA= X-Env-Sender: julien.grall@arm.com X-Msg-Ref: server-2.tower-27.messagelabs.com!1502720694!52177981!1 X-Originating-IP: [217.140.101.70] X-SpamReason: No, hits=0.0 required=7.0 tests=UPPERCASE_25_50 X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 37622 invoked from network); 14 Aug 2017 14:24:54 -0000 Received: from usa-sjc-mx-foss1.foss.arm.com (HELO foss.arm.com) (217.140.101.70) by server-2.tower-27.messagelabs.com with SMTP; 14 Aug 2017 14:24:54 -0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E91E01713; Mon, 14 Aug 2017 07:24:53 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.206.53]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 096343F483; Mon, 14 Aug 2017 07:24:52 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xen.org Date: Mon, 14 Aug 2017 15:24:08 +0100 Message-Id: <20170814142418.13267-18-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170814142418.13267-1-julien.grall@arm.com> References: <20170814142418.13267-1-julien.grall@arm.com> Cc: andre.przywara@arm.com, Julien Grall , sstabellini@kernel.org Subject: [Xen-devel] [PATCH 17/27] xen/arm: page: Use directly BUFFERABLE and drop DEV_WC X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP DEV_WC is only used for PAGE_HYPERVISOR_WC and does not bring much improvement. Signed-off-by: Julien Grall Reviewed-by: Andre Przywara --- xen/include/asm-arm/page.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/xen/include/asm-arm/page.h b/xen/include/asm-arm/page.h index 465300c6e5..660e1779c5 100644 --- a/xen/include/asm-arm/page.h +++ b/xen/include/asm-arm/page.h @@ -55,11 +55,10 @@ #define WRITEBACK 0x3 #define DEV_SHARED 0x4 #define WRITEALLOC 0x7 -#define DEV_WC BUFFERABLE #define PAGE_HYPERVISOR (WRITEALLOC) #define PAGE_HYPERVISOR_NOCACHE (DEV_SHARED) -#define PAGE_HYPERVISOR_WC (DEV_WC) +#define PAGE_HYPERVISOR_WC (BUFFERABLE) /* * Defines for changing the hypervisor PTE .ro and .nx bits. This is only to be