From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753968AbcKJAtV (ORCPT ); Wed, 9 Nov 2016 19:49:21 -0500 Received: from mail-bl2nam02on0060.outbound.protection.outlook.com ([104.47.38.60]:24064 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751934AbcKJAtQ (ORCPT ); Wed, 9 Nov 2016 19:49:16 -0500 X-Greylist: delayed 815 seconds by postgrey-1.27 at vger.kernel.org; Wed, 09 Nov 2016 19:49:15 EST Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Thomas.Lendacky@amd.com; From: Tom Lendacky Subject: [RFC PATCH v3 02/20] x86: Set the write-protect cache mode for full PAT support To: , , , , , , , , CC: Rik van Riel , Radim =?utf-8?b?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Joerg Roedel , Konrad Rzeszutek Wilk , "Paolo Bonzini" , Larry Woodman , "Ingo Molnar" , Borislav Petkov , Andy Lutomirski , "H. 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Acked-by: Borislav Petkov Signed-off-by: Tom Lendacky --- arch/x86/mm/pat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 170cc4f..87e8952 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -355,7 +355,7 @@ void pat_init(void) * 010 2 UC-: _PAGE_CACHE_MODE_UC_MINUS * 011 3 UC : _PAGE_CACHE_MODE_UC * 100 4 WB : Reserved - * 101 5 WC : Reserved + * 101 5 WP : _PAGE_CACHE_MODE_WP * 110 6 UC-: Reserved * 111 7 WT : _PAGE_CACHE_MODE_WT * @@ -363,7 +363,7 @@ void pat_init(void) * corresponding types in the presence of PAT errata. */ pat = PAT(0, WB) | PAT(1, WC) | PAT(2, UC_MINUS) | PAT(3, UC) | - PAT(4, WB) | PAT(5, WC) | PAT(6, UC_MINUS) | PAT(7, WT); + PAT(4, WB) | PAT(5, WP) | PAT(6, UC_MINUS) | PAT(7, WT); } if (!boot_cpu_done) { From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Lendacky Subject: [RFC PATCH v3 02/20] x86: Set the write-protect cache mode for full PAT support Date: Wed, 9 Nov 2016 18:34:48 -0600 Message-ID: <20161110003448.3280.27573.stgit@tlendack-t1.amdoffice.net> References: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> Sender: owner-linux-mm@kvack.org To: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org Cc: Rik van Riel , Radim =?utf-8?b?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Joerg Roedel , Konrad Rzeszutek Wilk , Paolo Bonzini , Larry Woodman , Ingo Molnar , Borislav Petkov , Andy Lutomirski , "H. Peter Anvin" , Andrey Ryabinin , Alexander Potapenko , Thomas Gleixner , Dmitry Vyukov List-Id: linux-efi@vger.kernel.org For processors that support PAT, set the write-protect cache mode (_PAGE_CACHE_MODE_WP) entry to the actual write-protect value (x05). Acked-by: Borislav Petkov Signed-off-by: Tom Lendacky --- arch/x86/mm/pat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 170cc4f..87e8952 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -355,7 +355,7 @@ void pat_init(void) * 010 2 UC-: _PAGE_CACHE_MODE_UC_MINUS * 011 3 UC : _PAGE_CACHE_MODE_UC * 100 4 WB : Reserved - * 101 5 WC : Reserved + * 101 5 WP : _PAGE_CACHE_MODE_WP * 110 6 UC-: Reserved * 111 7 WT : _PAGE_CACHE_MODE_WT * @@ -363,7 +363,7 @@ void pat_init(void) * corresponding types in the presence of PAT errata. */ pat = PAT(0, WB) | PAT(1, WC) | PAT(2, UC_MINUS) | PAT(3, UC) | - PAT(4, WB) | PAT(5, WC) | PAT(6, UC_MINUS) | PAT(7, WT); + PAT(4, WB) | PAT(5, WP) | PAT(6, UC_MINUS) | PAT(7, WT); } if (!boot_cpu_done) { -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-bl2nam02on0060.outbound.protection.outlook.com ([104.47.38.60]:24064 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751934AbcKJAtQ (ORCPT ); Wed, 9 Nov 2016 19:49:16 -0500 From: Tom Lendacky Subject: [RFC PATCH v3 02/20] x86: Set the write-protect cache mode for full PAT support Date: Wed, 9 Nov 2016 18:34:48 -0600 Message-ID: <20161110003448.3280.27573.stgit@tlendack-t1.amdoffice.net> In-Reply-To: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> References: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org Cc: Rik van Riel , Radim =?utf-8?b?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Joerg Roedel , Konrad Rzeszutek Wilk , Paolo Bonzini , Larry Woodman , Ingo Molnar , Borislav Petkov , Andy Lutomirski , "H. Peter Anvin" , Andrey Ryabinin , Alexander Potapenko , Thomas Gleixner , Dmitry Vyukov Message-ID: <20161110003448.8xpTjhihWhe1EFK4fhqoYyJgoN2fyC9csrHK_Q3GgLE@z> For processors that support PAT, set the write-protect cache mode (_PAGE_CACHE_MODE_WP) entry to the actual write-protect value (x05). Acked-by: Borislav Petkov Signed-off-by: Tom Lendacky --- arch/x86/mm/pat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 170cc4f..87e8952 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -355,7 +355,7 @@ void pat_init(void) * 010 2 UC-: _PAGE_CACHE_MODE_UC_MINUS * 011 3 UC : _PAGE_CACHE_MODE_UC * 100 4 WB : Reserved - * 101 5 WC : Reserved + * 101 5 WP : _PAGE_CACHE_MODE_WP * 110 6 UC-: Reserved * 111 7 WT : _PAGE_CACHE_MODE_WT * @@ -363,7 +363,7 @@ void pat_init(void) * corresponding types in the presence of PAT errata. */ pat = PAT(0, WB) | PAT(1, WC) | PAT(2, UC_MINUS) | PAT(3, UC) | - PAT(4, WB) | PAT(5, WC) | PAT(6, UC_MINUS) | PAT(7, WT); + PAT(4, WB) | PAT(5, WP) | PAT(6, UC_MINUS) | PAT(7, WT); } if (!boot_cpu_done) { From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Lendacky Subject: [RFC PATCH v3 02/20] x86: Set the write-protect cache mode for full PAT support Date: Wed, 9 Nov 2016 18:34:48 -0600 Message-ID: <20161110003448.3280.27573.stgit@tlendack-t1.amdoffice.net> References: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: Rik van Riel , Radim =?utf-8?b?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Joerg Roedel , Konrad Rzeszutek Wilk , "Paolo Bonzini" , Larry Woodman , "Ingo Molnar" , Borislav Petkov , Andy Lutomirski , "H. Peter Anvin" , Andrey Ryabinin , Alexander Potapenko , "Thomas Gleixner" , Dmitry Vyukov To: , , , , , , , , Return-path: In-Reply-To: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> Sender: owner-linux-mm@kvack.org List-Id: kvm.vger.kernel.org For processors that support PAT, set the write-protect cache mode (_PAGE_CACHE_MODE_WP) entry to the actual write-protect value (x05). Acked-by: Borislav Petkov Signed-off-by: Tom Lendacky --- arch/x86/mm/pat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 170cc4f..87e8952 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -355,7 +355,7 @@ void pat_init(void) * 010 2 UC-: _PAGE_CACHE_MODE_UC_MINUS * 011 3 UC : _PAGE_CACHE_MODE_UC * 100 4 WB : Reserved - * 101 5 WC : Reserved + * 101 5 WP : _PAGE_CACHE_MODE_WP * 110 6 UC-: Reserved * 111 7 WT : _PAGE_CACHE_MODE_WT * @@ -363,7 +363,7 @@ void pat_init(void) * corresponding types in the presence of PAT errata. */ pat = PAT(0, WB) | PAT(1, WC) | PAT(2, UC_MINUS) | PAT(3, UC) | - PAT(4, WB) | PAT(5, WC) | PAT(6, UC_MINUS) | PAT(7, WT); + PAT(4, WB) | PAT(5, WP) | PAT(6, UC_MINUS) | PAT(7, WT); } if (!boot_cpu_done) { -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org