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>, "Martin Schwidefsky" <schwidefsky@de.ibm.com>, "Heiko Carstens" <heiko.carstens@de.ibm.com>, linux-s390@vger.kernel.org Subject: [PATCH v4 06/19] s390: mm: Add p?d_large() definitions Date: Wed, 6 Mar 2019 15:50:18 +0000 [thread overview] Message-ID: <20190306155031.4291-7-steven.price@arm.com> (raw) In-Reply-To: <20190306155031.4291-1-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_large() functions/macros. For s390, pud_large() and pmd_large() are already implemented as static inline functions. Add a #define so we don't pick up the generic version introduced in a later patch. CC: Martin Schwidefsky <schwidefsky@de.ibm.com> CC: Heiko Carstens <heiko.carstens@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 063732414dfb..1f188004ba95 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -679,6 +679,7 @@ static inline int pud_none(pud_t pud) return pud_val(pud) == _REGION3_ENTRY_EMPTY; } +#define pud_large pud_large static inline int pud_large(pud_t pud) { if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3) @@ -696,6 +697,7 @@ static inline unsigned long pud_pfn(pud_t pud) return (pud_val(pud) & origin_mask) >> PAGE_SHIFT; } +#define pmd_large 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: 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>, "Will Deacon" <will.deacon@arm.com>, "H. Peter Anvin" <hpa@zytor.com>, "Liang, Kan" <kan.liang@linux.intel.com>, linux-s390@vger.kernel.org, x86@kernel.org, "Steven Price" <steven.price@arm.com>, "Ingo Molnar" <mingo@redhat.com>, "Arnd Bergmann" <arnd@arndb.de>, "Heiko Carstens" <heiko.carstens@de.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>, "Martin Schwidefsky" <schwidefsky@de.ibm.com> Subject: [PATCH v4 06/19] s390: mm: Add p?d_large() definitions Date: Wed, 6 Mar 2019 15:50:18 +0000 [thread overview] Message-ID: <20190306155031.4291-7-steven.price@arm.com> (raw) In-Reply-To: <20190306155031.4291-1-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_large() functions/macros. For s390, pud_large() and pmd_large() are already implemented as static inline functions. Add a #define so we don't pick up the generic version introduced in a later patch. CC: Martin Schwidefsky <schwidefsky@de.ibm.com> CC: Heiko Carstens <heiko.carstens@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 063732414dfb..1f188004ba95 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -679,6 +679,7 @@ static inline int pud_none(pud_t pud) return pud_val(pud) == _REGION3_ENTRY_EMPTY; } +#define pud_large pud_large static inline int pud_large(pud_t pud) { if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3) @@ -696,6 +697,7 @@ static inline unsigned long pud_pfn(pud_t pud) return (pud_val(pud) & origin_mask) >> PAGE_SHIFT; } +#define pmd_large 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:[~2019-03-06 15:51 UTC|newest] Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-06 15:50 [PATCH v4 00/19] Convert x86 & arm64 to use generic page walk Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 01/19] arc: mm: Add p?d_large() definitions Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 02/19] arm64: " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 03/19] mips: " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 17:12 ` Paul Burton 2019-03-06 17:12 ` Paul Burton 2019-03-06 15:50 ` [PATCH v4 04/19] powerpc: " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-08 8:37 ` Mike Rapoport 2019-03-08 8:37 ` Mike Rapoport 2019-03-08 8:37 ` Mike Rapoport 2019-03-08 8:37 ` Mike Rapoport 2019-03-08 10:50 ` Steven Price 2019-03-08 10:50 ` Steven Price 2019-03-08 10:50 ` Steven Price 2019-03-08 10:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 05/19] riscv: " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` Steven Price [this message] 2019-03-06 15:50 ` [PATCH v4 06/19] s390: " Steven Price 2019-03-06 15:50 ` [PATCH v4 07/19] sparc: " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 19:02 ` David Miller 2019-03-06 19:02 ` David Miller 2019-03-06 19:02 ` David Miller 2019-03-06 15:50 ` [PATCH v4 08/19] x86: " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 09/19] mm: Add generic p?d_large() macros Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 10/19] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 11/19] mm: pagewalk: Allow walking without vma Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 12/19] mm: pagewalk: Add test_p?d callbacks Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 13/19] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 14/19] x86: mm: Don't display pages which aren't present in debugfs Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 15/19] x86: mm: Point to struct seq_file from struct pg_state Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 16/19] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 17/19] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 18/19] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price 2019-03-06 15:50 ` Steven Price 2019-03-06 15:50 ` [PATCH v4 19/19] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price 2019-03-06 15:50 ` Steven Price
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