From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751097AbdCNJlM (ORCPT ); Tue, 14 Mar 2017 05:41:12 -0400 Received: from terminus.zytor.com ([65.50.211.136]:46320 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751061AbdCNJlK (ORCPT ); Tue, 14 Mar 2017 05:41:10 -0400 Date: Tue, 14 Mar 2017 02:37:13 -0700 From: "tip-bot for Kirill A. Shutemov" Message-ID: Cc: dave.hansen@intel.com, akpm@linux-foundation.org, torvalds@linux-foundation.org, brgerst@gmail.com, luto@kernel.org, mingo@kernel.org, peterz@infradead.org, kirill.shutemov@linux.intel.com, mhocko@suse.com, bp@alien8.de, jpoimboe@redhat.com, arnd@arndb.de, linux-kernel@vger.kernel.org, dvlasenk@redhat.com, tglx@linutronix.de, hpa@zytor.com Reply-To: bp@alien8.de, mhocko@suse.com, jpoimboe@redhat.com, dvlasenk@redhat.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, arnd@arndb.de, hpa@zytor.com, akpm@linux-foundation.org, dave.hansen@intel.com, torvalds@linux-foundation.org, brgerst@gmail.com, kirill.shutemov@linux.intel.com, peterz@infradead.org, luto@kernel.org, mingo@kernel.org In-Reply-To: <20170313143309.16020-2-kirill.shutemov@linux.intel.com> References: <20170313143309.16020-2-kirill.shutemov@linux.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/mm] x86/mm: Extend headers with basic definitions to support 5-level paging Git-Commit-ID: fe1e8c3e9634071ac608172e29bf997596d17c7c X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: fe1e8c3e9634071ac608172e29bf997596d17c7c Gitweb: http://git.kernel.org/tip/fe1e8c3e9634071ac608172e29bf997596d17c7c Author: Kirill A. Shutemov AuthorDate: Mon, 13 Mar 2017 17:33:04 +0300 Committer: Ingo Molnar CommitDate: Tue, 14 Mar 2017 08:45:07 +0100 x86/mm: Extend headers with basic definitions to support 5-level paging This patch extends x86 headers to enable 5-level paging support. It's still based on . We will get to the point where we can have later. Signed-off-by: Kirill A. Shutemov Cc: Andrew Morton Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Brian Gerst Cc: Dave Hansen Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Michal Hocko Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-arch@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20170313143309.16020-2-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/pgtable-2level_types.h | 1 + arch/x86/include/asm/pgtable-3level_types.h | 1 + arch/x86/include/asm/pgtable.h | 26 ++++++++++++++++++++----- arch/x86/include/asm/pgtable_64_types.h | 1 + arch/x86/include/asm/pgtable_types.h | 30 ++++++++++++++++++++++++++++- 5 files changed, 53 insertions(+), 6 deletions(-) diff --git a/arch/x86/include/asm/pgtable-2level_types.h b/arch/x86/include/asm/pgtable-2level_types.h index 3925764..373ab1d 100644 --- a/arch/x86/include/asm/pgtable-2level_types.h +++ b/arch/x86/include/asm/pgtable-2level_types.h @@ -7,6 +7,7 @@ typedef unsigned long pteval_t; typedef unsigned long pmdval_t; typedef unsigned long pudval_t; +typedef unsigned long p4dval_t; typedef unsigned long pgdval_t; typedef unsigned long pgprotval_t; diff --git a/arch/x86/include/asm/pgtable-3level_types.h b/arch/x86/include/asm/pgtable-3level_types.h index bcc8962..b8a4341 100644 --- a/arch/x86/include/asm/pgtable-3level_types.h +++ b/arch/x86/include/asm/pgtable-3level_types.h @@ -7,6 +7,7 @@ typedef u64 pteval_t; typedef u64 pmdval_t; typedef u64 pudval_t; +typedef u64 p4dval_t; typedef u64 pgdval_t; typedef u64 pgprotval_t; diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 1cfb36b..6f6f351 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -179,6 +179,17 @@ static inline unsigned long pud_pfn(pud_t pud) return (pud_val(pud) & pud_pfn_mask(pud)) >> PAGE_SHIFT; } +static inline unsigned long p4d_pfn(p4d_t p4d) +{ + return (p4d_val(p4d) & p4d_pfn_mask(p4d)) >> PAGE_SHIFT; +} + +static inline int p4d_large(p4d_t p4d) +{ + /* No 512 GiB pages yet */ + return 0; +} + #define pte_page(pte) pfn_to_page(pte_pfn(pte)) static inline int pmd_large(pmd_t pte) @@ -770,6 +781,16 @@ static inline int pud_large(pud_t pud) } #endif /* CONFIG_PGTABLE_LEVELS > 2 */ +static inline unsigned long pud_index(unsigned long address) +{ + return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1); +} + +static inline unsigned long p4d_index(unsigned long address) +{ + return (address >> P4D_SHIFT) & (PTRS_PER_P4D - 1); +} + #if CONFIG_PGTABLE_LEVELS > 3 static inline int pgd_present(pgd_t pgd) { @@ -788,11 +809,6 @@ static inline unsigned long pgd_page_vaddr(pgd_t pgd) #define pgd_page(pgd) pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT) /* to find an entry in a page-table-directory. */ -static inline unsigned long pud_index(unsigned long address) -{ - return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1); -} - static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address) { return (pud_t *)pgd_page_vaddr(*pgd) + pud_index(address); diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 3a26420..0b2797e 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -13,6 +13,7 @@ typedef unsigned long pteval_t; typedef unsigned long pmdval_t; typedef unsigned long pudval_t; +typedef unsigned long p4dval_t; typedef unsigned long pgdval_t; typedef unsigned long pgprotval_t; diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 6248433..df08535 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -272,9 +272,20 @@ static inline pgdval_t pgd_flags(pgd_t pgd) return native_pgd_val(pgd) & PTE_FLAGS_MASK; } -#if CONFIG_PGTABLE_LEVELS > 3 +#if CONFIG_PGTABLE_LEVELS > 4 + +#error FIXME + +#else #include +static inline p4dval_t native_p4d_val(p4d_t p4d) +{ + return native_pgd_val(p4d); +} +#endif + +#if CONFIG_PGTABLE_LEVELS > 3 typedef struct { pudval_t pud; } pud_t; static inline pud_t native_make_pud(pmdval_t val) @@ -318,6 +329,22 @@ static inline pmdval_t native_pmd_val(pmd_t pmd) } #endif +static inline p4dval_t p4d_pfn_mask(p4d_t p4d) +{ + /* No 512 GiB huge pages yet */ + return PTE_PFN_MASK; +} + +static inline p4dval_t p4d_flags_mask(p4d_t p4d) +{ + return ~p4d_pfn_mask(p4d); +} + +static inline p4dval_t p4d_flags(p4d_t p4d) +{ + return native_p4d_val(p4d) & p4d_flags_mask(p4d); +} + static inline pudval_t pud_pfn_mask(pud_t pud) { if (native_pud_val(pud) & _PAGE_PSE) @@ -461,6 +488,7 @@ enum pg_level { PG_LEVEL_4K, PG_LEVEL_2M, PG_LEVEL_1G, + PG_LEVEL_512G, PG_LEVEL_NUM };