From: Steven Price <steven.price@arm.com> To: Andrew Morton <akpm@linux-foundation.org>, 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@kernel.org>, 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>, "Heiko Carstens" <heiko.carstens@de.ibm.com>, "Vasily Gorbik" <gor@linux.ibm.com>, "Christian Borntraeger" <borntraeger@de.ibm.com>, linux-s390@vger.kernel.org Subject: [PATCH v15 08/23] s390: mm: Add p?d_leaf() definitions Date: Fri, 1 Nov 2019 14:09:27 +0000 [thread overview] Message-ID: <20191101140942.51554-9-steven.price@arm.com> (raw) In-Reply-To: <20191101140942.51554-1-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 is provided by the p?d_leaf() functions/macros. For s390, pud_large() and pmd_large() are already implemented as static inline functions. Add a macro to provide the p?d_leaf names for the generic code to use. CC: Heiko Carstens <heiko.carstens@de.ibm.com> CC: Vasily Gorbik <gor@linux.ibm.com> CC: Christian Borntraeger <borntraeger@de.ibm.com> CC: linux-s390@vger.kernel.org Signed-off-by: Steven Price <steven.price@arm.com> --- arch/s390/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 36c578c0ff96..acab5a455490 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -675,6 +675,7 @@ static inline int pud_none(pud_t pud) return pud_val(pud) == _REGION3_ENTRY_EMPTY; } +#define pud_leaf pud_large static inline int pud_large(pud_t pud) { if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3) @@ -692,6 +693,7 @@ static inline unsigned long pud_pfn(pud_t pud) return (pud_val(pud) & origin_mask) >> PAGE_SHIFT; } +#define pmd_leaf pmd_large static inline int pmd_large(pmd_t pmd) { return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0; -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com> To: Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org Cc: "Mark Rutland" <Mark.Rutland@arm.com>, "Peter Zijlstra" <peterz@infradead.org>, "Catalin Marinas" <catalin.marinas@arm.com>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Heiko Carstens" <heiko.carstens@de.ibm.com>, "H. Peter Anvin" <hpa@zytor.com>, "Will Deacon" <will@kernel.org>, "Liang, Kan" <kan.liang@linux.intel.com>, linux-s390@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>, x86@kernel.org, "Steven Price" <steven.price@arm.com>, "Christian Borntraeger" <borntraeger@de.ibm.com>, "Ingo Molnar" <mingo@redhat.com>, "Vasily Gorbik" <gor@linux.ibm.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Borislav Petkov" <bp@alien8.de>, "Andy Lutomirski" <luto@kernel.org>, "Thomas Gleixner" <tglx@linutronix.de>, linux-arm-kernel@lists.infradead.org, "Ard Biesheuvel" <ard.biesheuvel@linaro.org>, linux-kernel@vger.kernel.org, "James Morse" <james.morse@arm.com> Subject: [PATCH v15 08/23] s390: mm: Add p?d_leaf() definitions Date: Fri, 1 Nov 2019 14:09:27 +0000 [thread overview] Message-ID: <20191101140942.51554-9-steven.price@arm.com> (raw) In-Reply-To: <20191101140942.51554-1-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 is provided by the p?d_leaf() functions/macros. For s390, pud_large() and pmd_large() are already implemented as static inline functions. Add a macro to provide the p?d_leaf names for the generic code to use. CC: Heiko Carstens <heiko.carstens@de.ibm.com> CC: Vasily Gorbik <gor@linux.ibm.com> CC: Christian Borntraeger <borntraeger@de.ibm.com> CC: linux-s390@vger.kernel.org Signed-off-by: Steven Price <steven.price@arm.com> --- arch/s390/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 36c578c0ff96..acab5a455490 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -675,6 +675,7 @@ static inline int pud_none(pud_t pud) return pud_val(pud) == _REGION3_ENTRY_EMPTY; } +#define pud_leaf pud_large static inline int pud_large(pud_t pud) { if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3) @@ -692,6 +693,7 @@ static inline unsigned long pud_pfn(pud_t pud) return (pud_val(pud) & origin_mask) >> PAGE_SHIFT; } +#define pmd_leaf pmd_large static inline int pmd_large(pmd_t pmd) { return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0; -- 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:[~2019-11-01 14:10 UTC|newest] Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-01 14:09 [PATCH v15 00/23] Generic page walk and ptdump Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 01/23] mm: Add generic p?d_leaf() macros Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 02/23] arc: mm: Add p?d_leaf() definitions Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 03/23] arm: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 04/23] arm64: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 05/23] mips: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 06/23] powerpc: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 07/23] riscv: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` Steven Price [this message] 2019-11-01 14:09 ` [PATCH v15 08/23] s390: " Steven Price 2019-11-01 14:09 ` [PATCH v15 09/23] sparc: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 10/23] x86: " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 11/23] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 12/23] mm: pagewalk: Allow walking without vma Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 13/23] mm: pagewalk: Add test_p?d callbacks Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 14/23] mm: pagewalk: Add 'depth' parameter to pte_hole Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 15/23] x86: mm: Point to struct seq_file from struct pg_state Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 16/23] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 17/23] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 18/23] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 19/23] mm: Add generic ptdump Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 20/23] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 21/23] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 22/23] arm64: mm: Display non-present entries in ptdump Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-01 14:09 ` [PATCH v15 23/23] mm: ptdump: Reduce level numbers by 1 in note_page() Steven Price 2019-11-01 14:09 ` Steven Price 2019-11-04 19:35 ` [PATCH v15 00/23] Generic page walk and ptdump Qian Cai 2019-11-04 19:35 ` Qian Cai 2019-11-06 13:31 ` Qian Cai 2019-11-06 13:31 ` Qian Cai 2019-11-06 15:05 ` Steven Price 2019-11-06 15:05 ` Steven Price 2019-12-03 11:02 ` David Hildenbrand 2019-12-03 11:02 ` David Hildenbrand 2019-12-04 14:54 ` Qian Cai 2019-12-04 14:54 ` Qian Cai 2019-12-04 14:56 ` David Hildenbrand 2019-12-04 14:56 ` David Hildenbrand 2019-12-04 16:32 ` Steven Price 2019-12-04 16:32 ` Steven Price 2019-12-04 17:51 ` Thomas Hellstrom 2019-12-04 17:51 ` Thomas Hellstrom 2019-12-05 13:15 ` Qian Cai 2019-12-05 13:15 ` Qian Cai 2019-12-05 14:32 ` Thomas Hellstrom 2019-12-05 14:32 ` Thomas Hellstrom 2019-12-05 14:32 ` Thomas Hellstrom 2019-12-05 14:38 ` Qian Cai 2019-12-05 14:38 ` Qian Cai 2019-12-05 14:38 ` Qian Cai
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