From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Cc: "Steven Price" <steven.price@arm.com>, "Andy Lutomirski" <luto@kernel.org>, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, "Arnd Bergmann" <arnd@arndb.de>, "Borislav Petkov" <bp@alien8.de>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Ingo Molnar" <mingo@redhat.com>, "James Morse" <james.morse@arm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Peter Zijlstra" <peterz@infradead.org>, "Thomas Gleixner" <tglx@linutronix.de>, "Will Deacon" <will.deacon@arm.com>, x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Mark Rutland" <Mark.Rutland@arm.com>, "Liang, Kan" <kan.liang@linux.intel.com> Subject: [PATCH v5 02/19] arm64: mm: Add p?d_large() definitions Date: Thu, 21 Mar 2019 14:19:36 +0000 [thread overview] Message-ID: <20190321141953.31960-3-steven.price@arm.com> (raw) In-Reply-To: <20190321141953.31960-1-steven.price@arm.com> walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information will be provided by the p?d_large() functions/macros. For arm64, we already have p?d_sect() macros which we can reuse for p?d_large(). CC: Catalin Marinas <catalin.marinas@arm.com> CC: Will Deacon <will.deacon@arm.com> Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index de70c1eabf33..6eef345dbaf4 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, PMD_TYPE_TABLE) #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_SECT) +#define pmd_large(pmd) pmd_sect(pmd) #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3 #define pud_sect(pud) (0) @@ -511,6 +512,7 @@ static inline phys_addr_t pmd_page_paddr(pmd_t pmd) #define pud_none(pud) (!pud_val(pud)) #define pud_bad(pud) (!(pud_val(pud) & PUD_TABLE_BIT)) #define pud_present(pud) pte_present(pud_pte(pud)) +#define pud_large(pud) pud_sect(pud) #define pud_valid(pud) pte_valid(pud_pte(pud)) static inline void set_pud(pud_t *pudp, pud_t pud) -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Cc: "Mark Rutland" <Mark.Rutland@arm.com>, x86@kernel.org, "Arnd Bergmann" <arnd@arndb.de>, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, "Peter Zijlstra" <peterz@infradead.org>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Will Deacon" <will.deacon@arm.com>, linux-kernel@vger.kernel.org, "Steven Price" <steven.price@arm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Ingo Molnar" <mingo@redhat.com>, "Borislav Petkov" <bp@alien8.de>, "Andy Lutomirski" <luto@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>, "James Morse" <james.morse@arm.com>, "Thomas Gleixner" <tglx@linutronix.de>, linux-arm-kernel@lists.infradead.org, "Liang, Kan" <kan.liang@linux.intel.com> Subject: [PATCH v5 02/19] arm64: mm: Add p?d_large() definitions Date: Thu, 21 Mar 2019 14:19:36 +0000 [thread overview] Message-ID: <20190321141953.31960-3-steven.price@arm.com> (raw) In-Reply-To: <20190321141953.31960-1-steven.price@arm.com> walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information will be provided by the p?d_large() functions/macros. For arm64, we already have p?d_sect() macros which we can reuse for p?d_large(). CC: Catalin Marinas <catalin.marinas@arm.com> CC: Will Deacon <will.deacon@arm.com> Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index de70c1eabf33..6eef345dbaf4 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, PMD_TYPE_TABLE) #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_SECT) +#define pmd_large(pmd) pmd_sect(pmd) #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3 #define pud_sect(pud) (0) @@ -511,6 +512,7 @@ static inline phys_addr_t pmd_page_paddr(pmd_t pmd) #define pud_none(pud) (!pud_val(pud)) #define pud_bad(pud) (!(pud_val(pud) & PUD_TABLE_BIT)) #define pud_present(pud) pte_present(pud_pte(pud)) +#define pud_large(pud) pud_sect(pud) #define pud_valid(pud) pte_valid(pud_pte(pud)) static inline void set_pud(pud_t *pudp, pud_t pud) -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-03-21 14:20 UTC|newest] Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-21 14:19 [PATCH v5 00/19] Convert x86 & arm64 to use generic page walk Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 01/19] arc: mm: Add p?d_large() definitions Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` Steven Price [this message] 2019-03-21 14:19 ` [PATCH v5 02/19] arm64: " Steven Price 2019-03-21 14:19 ` [PATCH v5 03/19] mips: " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 04/19] powerpc: " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 05/19] riscv: " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 06/19] s390: " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 07/19] sparc: " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 08/19] x86: " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 09/19] mm: Add generic p?d_large() macros Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 10/19] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 21:15 ` Mike Rapoport 2019-03-21 21:15 ` Mike Rapoport 2019-03-22 10:11 ` Steven Price 2019-03-22 10:11 ` Steven Price 2019-03-22 10:29 ` Mike Rapoport 2019-03-22 10:29 ` Mike Rapoport 2019-03-22 10:37 ` Steven Price 2019-03-22 10:37 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 11/19] mm: pagewalk: Allow walking without vma Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 12/19] mm: pagewalk: Add test_p?d callbacks Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 13/19] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 14/19] x86: mm: Don't display pages which aren't present in debugfs Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 15/19] x86: mm: Point to struct seq_file from struct pg_state Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 16/19] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 17/19] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 18/19] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price 2019-03-21 14:19 ` Steven Price 2019-03-21 14:19 ` [PATCH v5 19/19] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price 2019-03-21 14:19 ` Steven Price
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