From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934341AbdBQOON (ORCPT ); Fri, 17 Feb 2017 09:14:13 -0500 Received: from mga11.intel.com ([192.55.52.93]:24061 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934297AbdBQOOI (ORCPT ); Fri, 17 Feb 2017 09:14:08 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,172,1484035200"; d="scan'208";a="935091619" From: "Kirill A. Shutemov" To: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , Arnd Bergmann , "H. Peter Anvin" Cc: Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv3 32/33] x86: enable 5-level paging support Date: Fri, 17 Feb 2017 17:13:27 +0300 Message-Id: <20170217141328.164563-33-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170217141328.164563-1-kirill.shutemov@linux.intel.com> References: <20170217141328.164563-1-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Most of things are in place and we can enable support of 5-level paging. Enabling XEN with 5-level paging requires more work. The patch makes XEN dependent on !X86_5LEVEL. Signed-off-by: Kirill A. Shutemov --- arch/x86/Kconfig | 5 +++++ arch/x86/xen/Kconfig | 1 + 2 files changed, 6 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 3d51256a9e61..f97b149145f8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -315,6 +315,7 @@ config DEBUG_RODATA config PGTABLE_LEVELS int + default 5 if X86_5LEVEL default 4 if X86_64 default 3 if X86_PAE default 2 @@ -1379,6 +1380,10 @@ config X86_PAE has the cost of more pagetable lookup overhead, and also consumes more pagetable space per process. +config X86_5LEVEL + bool "Enable 5-level page tables support" + depends on X86_64 + config ARCH_PHYS_ADDR_T_64BIT def_bool y depends on X86_64 || X86_PAE diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig index c7b15f3e2cf3..e69eee1a5bad 100644 --- a/arch/x86/xen/Kconfig +++ b/arch/x86/xen/Kconfig @@ -5,6 +5,7 @@ config XEN bool "Xen guest support" depends on PARAVIRT + depends on !X86_5LEVEL select PARAVIRT_CLOCK select XEN_HAVE_PVMMU select XEN_HAVE_VPMU -- 2.11.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f199.google.com (mail-pf0-f199.google.com [209.85.192.199]) by kanga.kvack.org (Postfix) with ESMTP id C3BB14405E1 for ; Fri, 17 Feb 2017 09:14:08 -0500 (EST) Received: by mail-pf0-f199.google.com with SMTP id c73so62705071pfb.7 for ; Fri, 17 Feb 2017 06:14:08 -0800 (PST) Received: from mga04.intel.com (mga04.intel.com. [192.55.52.120]) by mx.google.com with ESMTPS id q11si5933430pgf.297.2017.02.17.06.14.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 17 Feb 2017 06:14:08 -0800 (PST) From: "Kirill A. Shutemov" Subject: [PATCHv3 32/33] x86: enable 5-level paging support Date: Fri, 17 Feb 2017 17:13:27 +0300 Message-Id: <20170217141328.164563-33-kirill.shutemov@linux.intel.com> In-Reply-To: <20170217141328.164563-1-kirill.shutemov@linux.intel.com> References: <20170217141328.164563-1-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , Arnd Bergmann , "H. Peter Anvin" Cc: Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Most of things are in place and we can enable support of 5-level paging. Enabling XEN with 5-level paging requires more work. The patch makes XEN dependent on !X86_5LEVEL. Signed-off-by: Kirill A. Shutemov --- arch/x86/Kconfig | 5 +++++ arch/x86/xen/Kconfig | 1 + 2 files changed, 6 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 3d51256a9e61..f97b149145f8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -315,6 +315,7 @@ config DEBUG_RODATA config PGTABLE_LEVELS int + default 5 if X86_5LEVEL default 4 if X86_64 default 3 if X86_PAE default 2 @@ -1379,6 +1380,10 @@ config X86_PAE has the cost of more pagetable lookup overhead, and also consumes more pagetable space per process. +config X86_5LEVEL + bool "Enable 5-level page tables support" + depends on X86_64 + config ARCH_PHYS_ADDR_T_64BIT def_bool y depends on X86_64 || X86_PAE diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig index c7b15f3e2cf3..e69eee1a5bad 100644 --- a/arch/x86/xen/Kconfig +++ b/arch/x86/xen/Kconfig @@ -5,6 +5,7 @@ config XEN bool "Xen guest support" depends on PARAVIRT + depends on !X86_5LEVEL select PARAVIRT_CLOCK select XEN_HAVE_PVMMU select XEN_HAVE_VPMU -- 2.11.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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