From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Arnd Bergmann <arnd@arndb.de>, "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <ak@linux.intel.com>, Dave Hansen <dave.hansen@intel.com>, Andy Lutomirski <luto@amacapital.net>, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [RFC, PATCHv1 19/28] x86/mm: basic defines/helpers for CONFIG_X86_5LEVEL Date: Thu, 8 Dec 2016 19:21:41 +0300 [thread overview] Message-ID: <20161208162150.148763-21-kirill.shutemov@linux.intel.com> (raw) In-Reply-To: <20161208162150.148763-1-kirill.shutemov@linux.intel.com> Extends pagetable headers to support new paging mode. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- arch/x86/include/asm/pgtable_64.h | 11 +++++++++++ arch/x86/include/asm/pgtable_64_types.h | 20 +++++++++++++++++++ arch/x86/include/asm/pgtable_types.h | 10 +++++++++- arch/x86/mm/pgtable.c | 34 ++++++++++++++++++++++++++++++++- 4 files changed, 73 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index f14bbe95ca08..bfe276e9af1e 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -35,6 +35,13 @@ extern void paging_init(void); #define pud_ERROR(e) \ pr_err("%s:%d: bad pud %p(%016lx)\n", \ __FILE__, __LINE__, &(e), pud_val(e)) + +#if CONFIG_PGTABLE_LEVELS >= 5 +#define p4d_ERROR(e) \ + pr_err("%s:%d: bad p4d %p(%016lx)\n", \ + __FILE__, __LINE__, &(e), p4d_val(e)) +#endif + #define pgd_ERROR(e) \ pr_err("%s:%d: bad pgd %p(%016lx)\n", \ __FILE__, __LINE__, &(e), pgd_val(e)) @@ -113,7 +120,11 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d) static inline void native_p4d_clear(p4d_t *p4d) { +#ifdef CONFIG_X86_5LEVEL + native_set_p4d(p4d, native_make_p4d(0)); +#else native_set_p4d(p4d, (p4d_t) { .pgd = native_make_pgd(0)}); +#endif } static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 034cbca37c91..677525f7d538 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -23,12 +23,32 @@ typedef struct { pteval_t pte; } pte_t; #define SHARED_KERNEL_PMD 0 +#ifdef CONFIG_X86_5LEVEL + +/* + * PGDIR_SHIFT determines what a top-level page table entry can map + */ +#define PGDIR_SHIFT 48 +#define PTRS_PER_PGD 512 + +/* + * 4rd level page in 5-level paging case + */ +#define P4D_SHIFT 39 +#define PTRS_PER_P4D 512 +#define P4D_SIZE (_AC(1, UL) << P4D_SHIFT) +#define P4D_MASK (~(P4D_SIZE - 1)) + +#else /* CONFIG_X86_5LEVEL */ + /* * PGDIR_SHIFT determines what a top-level page table entry can map */ #define PGDIR_SHIFT 39 #define PTRS_PER_PGD 512 +#endif /* CONFIG_X86_5LEVEL */ + /* * 3rd level page */ diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 0af5650e118c..91cc929f27e6 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -273,9 +273,17 @@ static inline pgdval_t pgd_flags(pgd_t pgd) } #if CONFIG_PGTABLE_LEVELS > 4 +typedef struct { p4dval_t p4d; } p4d_t; -#error FIXME +static inline p4d_t native_make_p4d(pudval_t val) +{ + return (p4d_t) { val }; +} +static inline p4dval_t native_p4d_val(p4d_t p4d) +{ + return p4d.p4d; +} #else #include <asm-generic/pgtable-nop4d.h> diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index cc6fcd4040e2..ec2dc0625480 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -81,6 +81,14 @@ void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) paravirt_release_pud(__pa(pud) >> PAGE_SHIFT); tlb_remove_page(tlb, virt_to_page(pud)); } + +#if CONFIG_PGTABLE_LEVELS > 4 +void ___p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d) +{ + paravirt_release_p4d(__pa(p4d) >> PAGE_SHIFT); + tlb_remove_page(tlb, virt_to_page(p4d)); +} +#endif /* CONFIG_PGTABLE_LEVELS > 4 */ #endif /* CONFIG_PGTABLE_LEVELS > 3 */ #endif /* CONFIG_PGTABLE_LEVELS > 2 */ @@ -120,7 +128,7 @@ static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) references from swapper_pg_dir. */ if (CONFIG_PGTABLE_LEVELS == 2 || (CONFIG_PGTABLE_LEVELS == 3 && SHARED_KERNEL_PMD) || - CONFIG_PGTABLE_LEVELS == 4) { + CONFIG_PGTABLE_LEVELS >= 4) { clone_pgd_range(pgd + KERNEL_PGD_BOUNDARY, swapper_pg_dir + KERNEL_PGD_BOUNDARY, KERNEL_PGD_PTRS); @@ -551,6 +559,30 @@ void native_set_fixmap(enum fixed_addresses idx, phys_addr_t phys, } #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP +#ifdef CONFIG_X86_5LEVEL +/** + * p4d_set_huge - setup kernel P4D mapping + * + * No 512GB pages yet -- always return 0 + * + * Returns 1 on success and 0 on failure. + */ +int p4d_set_huge(p4d_t *p4d, phys_addr_t addr, pgprot_t prot) +{ + return 0; +} + +/** + * p4d_clear_huge - clear kernel P4D mapping when it is set + * + * No 512GB pages yet -- always return 0 + */ +int p4d_clear_huge(p4d_t *p4d) +{ + return 0; +} +#endif + /** * pud_set_huge - setup kernel PUD mapping * -- 2.10.2 -- 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: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Arnd Bergmann <arnd@arndb.de>, "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <ak@linux.intel.com>, Dave Hansen <dave.hansen@intel.com>, Andy Lutomirski <luto@amacapital.net>, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [RFC, PATCHv1 19/28] x86/mm: basic defines/helpers for CONFIG_X86_5LEVEL Date: Thu, 8 Dec 2016 19:21:41 +0300 [thread overview] Message-ID: <20161208162150.148763-21-kirill.shutemov@linux.intel.com> (raw) Message-ID: <20161208162141.SJKSX3WxtbhWSn59_nTavahpZFmJtT6dmcnQP8Hfmfk@z> (raw) In-Reply-To: <20161208162150.148763-1-kirill.shutemov@linux.intel.com> Extends pagetable headers to support new paging mode. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- arch/x86/include/asm/pgtable_64.h | 11 +++++++++++ arch/x86/include/asm/pgtable_64_types.h | 20 +++++++++++++++++++ arch/x86/include/asm/pgtable_types.h | 10 +++++++++- arch/x86/mm/pgtable.c | 34 ++++++++++++++++++++++++++++++++- 4 files changed, 73 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index f14bbe95ca08..bfe276e9af1e 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -35,6 +35,13 @@ extern void paging_init(void); #define pud_ERROR(e) \ pr_err("%s:%d: bad pud %p(%016lx)\n", \ __FILE__, __LINE__, &(e), pud_val(e)) + +#if CONFIG_PGTABLE_LEVELS >= 5 +#define p4d_ERROR(e) \ + pr_err("%s:%d: bad p4d %p(%016lx)\n", \ + __FILE__, __LINE__, &(e), p4d_val(e)) +#endif + #define pgd_ERROR(e) \ pr_err("%s:%d: bad pgd %p(%016lx)\n", \ __FILE__, __LINE__, &(e), pgd_val(e)) @@ -113,7 +120,11 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d) static inline void native_p4d_clear(p4d_t *p4d) { +#ifdef CONFIG_X86_5LEVEL + native_set_p4d(p4d, native_make_p4d(0)); +#else native_set_p4d(p4d, (p4d_t) { .pgd = native_make_pgd(0)}); +#endif } static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 034cbca37c91..677525f7d538 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -23,12 +23,32 @@ typedef struct { pteval_t pte; } pte_t; #define SHARED_KERNEL_PMD 0 +#ifdef CONFIG_X86_5LEVEL + +/* + * PGDIR_SHIFT determines what a top-level page table entry can map + */ +#define PGDIR_SHIFT 48 +#define PTRS_PER_PGD 512 + +/* + * 4rd level page in 5-level paging case + */ +#define P4D_SHIFT 39 +#define PTRS_PER_P4D 512 +#define P4D_SIZE (_AC(1, UL) << P4D_SHIFT) +#define P4D_MASK (~(P4D_SIZE - 1)) + +#else /* CONFIG_X86_5LEVEL */ + /* * PGDIR_SHIFT determines what a top-level page table entry can map */ #define PGDIR_SHIFT 39 #define PTRS_PER_PGD 512 +#endif /* CONFIG_X86_5LEVEL */ + /* * 3rd level page */ diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 0af5650e118c..91cc929f27e6 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -273,9 +273,17 @@ static inline pgdval_t pgd_flags(pgd_t pgd) } #if CONFIG_PGTABLE_LEVELS > 4 +typedef struct { p4dval_t p4d; } p4d_t; -#error FIXME +static inline p4d_t native_make_p4d(pudval_t val) +{ + return (p4d_t) { val }; +} +static inline p4dval_t native_p4d_val(p4d_t p4d) +{ + return p4d.p4d; +} #else #include <asm-generic/pgtable-nop4d.h> diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index cc6fcd4040e2..ec2dc0625480 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -81,6 +81,14 @@ void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) paravirt_release_pud(__pa(pud) >> PAGE_SHIFT); tlb_remove_page(tlb, virt_to_page(pud)); } + +#if CONFIG_PGTABLE_LEVELS > 4 +void ___p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d) +{ + paravirt_release_p4d(__pa(p4d) >> PAGE_SHIFT); + tlb_remove_page(tlb, virt_to_page(p4d)); +} +#endif /* CONFIG_PGTABLE_LEVELS > 4 */ #endif /* CONFIG_PGTABLE_LEVELS > 3 */ #endif /* CONFIG_PGTABLE_LEVELS > 2 */ @@ -120,7 +128,7 @@ static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) references from swapper_pg_dir. */ if (CONFIG_PGTABLE_LEVELS == 2 || (CONFIG_PGTABLE_LEVELS == 3 && SHARED_KERNEL_PMD) || - CONFIG_PGTABLE_LEVELS == 4) { + CONFIG_PGTABLE_LEVELS >= 4) { clone_pgd_range(pgd + KERNEL_PGD_BOUNDARY, swapper_pg_dir + KERNEL_PGD_BOUNDARY, KERNEL_PGD_PTRS); @@ -551,6 +559,30 @@ void native_set_fixmap(enum fixed_addresses idx, phys_addr_t phys, } #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP +#ifdef CONFIG_X86_5LEVEL +/** + * p4d_set_huge - setup kernel P4D mapping + * + * No 512GB pages yet -- always return 0 + * + * Returns 1 on success and 0 on failure. + */ +int p4d_set_huge(p4d_t *p4d, phys_addr_t addr, pgprot_t prot) +{ + return 0; +} + +/** + * p4d_clear_huge - clear kernel P4D mapping when it is set + * + * No 512GB pages yet -- always return 0 + */ +int p4d_clear_huge(p4d_t *p4d) +{ + return 0; +} +#endif + /** * pud_set_huge - setup kernel PUD mapping * -- 2.10.2
next prev parent reply other threads:[~2016-12-08 16:21 UTC|newest] Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-12-08 16:21 [RFC, PATCHv1 00/28] 5-level paging Kirill A. Shutemov 2016-12-08 16:21 ` [QEMU, PATCH] x86: implement la57 paging mode Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:48 ` [Qemu-devel] " no-reply 2016-12-08 16:48 ` no-reply 2016-12-08 16:21 ` [RFC, PATCHv1 01/28] asm-generic: introduce 5level-fixup.h Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 02/28] asm-generic: introduce __ARCH_USE_5LEVEL_HACK Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 03/28] arch, mm: convert all architectures to use 5level-fixup.h Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 04/28] asm-generic: introduce <asm-generic/pgtable-nop4d.h> Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 05/28] mm: convert generic code to 5-level paging Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 06/28] x86: basic changes into headers for " Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 07/28] x86: trivial portion of 5-level paging conversion Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 08/28] x86/gup: add 5-level paging support Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 09/28] x86/ident_map: " Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 10/28] x86/mm: add support of p4d_t in vmalloc_fault() Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 11/28] x86/power: support p4d_t in hibernate code Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 12/28] x86/kexec: support p4d_t Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 13/28] x86: convert the rest of the code to " Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 14/28] mm: introduce __p4d_alloc() Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 15/28] x86: detect 5-level paging support Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 20:05 ` Borislav Petkov 2016-12-08 20:08 ` Linus Torvalds 2016-12-08 20:08 ` Linus Torvalds 2016-12-08 20:20 ` Borislav Petkov 2016-12-13 22:44 ` H. Peter Anvin 2016-12-13 22:44 ` H. Peter Anvin 2016-12-13 23:07 ` Boris Petkov 2016-12-13 23:07 ` Boris Petkov 2016-12-15 14:39 ` Borislav Petkov 2016-12-15 14:39 ` Borislav Petkov 2016-12-15 17:52 ` hpa 2016-12-15 17:52 ` hpa 2016-12-15 19:09 ` Borislav Petkov 2016-12-15 19:20 ` Andi Kleen 2016-12-15 19:20 ` Andi Kleen 2016-12-15 20:52 ` hpa 2016-12-15 20:52 ` hpa 2016-12-15 20:57 ` hpa 2016-12-15 20:57 ` hpa 2016-12-09 15:32 ` Kirill A. Shutemov 2016-12-09 16:33 ` Borislav Petkov 2016-12-13 22:50 ` H. Peter Anvin 2016-12-13 22:50 ` H. Peter Anvin 2016-12-08 16:21 ` [RFC, PATCHv1 16/28] x86/asm: remove __VIRTUAL_MASK_SHIFT==47 assert Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 18:39 ` Andy Lutomirski 2016-12-08 19:22 ` Kirill A. Shutemov 2016-12-08 19:22 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 17/28] x86/mm: define virtual memory map for 5-level paging Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 18:56 ` Randy Dunlap 2016-12-08 19:24 ` Kirill A. Shutemov 2016-12-08 19:24 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 18/28] x86/paravirt: make paravirt code support " Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov [this message] 2016-12-08 16:21 ` [RFC, PATCHv1 19/28] x86/mm: basic defines/helpers for CONFIG_X86_5LEVEL Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 20/28] x86/dump_pagetables: support 5-level paging Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 21/28] x86/mm: extend kasan to " Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 22/28] x86/espfix: " Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 18:40 ` Andy Lutomirski 2016-12-08 18:40 ` Andy Lutomirski 2016-12-12 14:22 ` Kirill A. Shutemov 2016-12-12 14:22 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 23/28] x86/mm: add support of additional page table level during early boot Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 24/28] x86/mm: add sync_global_pgds() for configuration with 5-level paging Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 18:42 ` Andy Lutomirski 2016-12-08 19:33 ` Kirill A. Shutemov 2016-12-08 19:33 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 25/28] x86/mm: make kernel_physical_mapping_init() support " Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 26/28] x86/mm: add support for 5-level paging for KASLR Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 27/28] x86: enable la57 support Kirill A. Shutemov 2016-12-08 16:21 ` Kirill A. Shutemov 2016-12-08 16:21 ` [RFC, PATCHv1 28/28] TESTING-ONLY: bump TASK_SIZE_MAX Kirill A. Shutemov 2016-12-08 18:16 ` [RFC, PATCHv1 00/28] 5-level paging Linus Torvalds 2016-12-08 18:16 ` Linus Torvalds 2016-12-08 18:26 ` hpa 2016-12-08 18:26 ` hpa 2016-12-08 19:20 ` Kirill A. Shutemov 2016-12-08 19:20 ` Kirill A. Shutemov 2016-12-09 5:01 ` Ingo Molnar 2016-12-09 5:01 ` Ingo Molnar 2016-12-09 10:24 ` Arnd Bergmann 2016-12-09 10:51 ` Catalin Marinas 2016-12-09 10:51 ` Catalin Marinas 2016-12-09 10:37 ` Kirill A. Shutemov 2016-12-09 10:37 ` Kirill A. Shutemov 2016-12-09 16:40 ` Andi Kleen 2016-12-09 17:21 ` Kirill A. Shutemov 2016-12-09 17:21 ` Kirill A. Shutemov 2016-12-09 16:49 ` Dave Hansen 2016-12-09 16:49 ` Dave Hansen 2016-12-13 21:06 ` Dave Hansen 2016-12-13 21:06 ` Dave Hansen
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