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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>,
	"Vineet Gupta" <vgupta@synopsys.com>,
	linux-snps-arc@lists.infradead.org
Subject: [PATCH v5 01/19] arc: mm: Add p?d_large() definitions
Date: Thu, 21 Mar 2019 14:19:35 +0000	[thread overview]
Message-ID: <20190321141953.31960-2-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 arc, we only have two levels, so only pmd_large() is needed.

CC: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc@lists.infradead.org
Signed-off-by: Steven Price <steven.price@arm.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
---
 arch/arc/include/asm/pgtable.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index cf4be70d5892..0edd27bc7018 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -277,6 +277,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
 #define pmd_none(x)			(!pmd_val(x))
 #define	pmd_bad(x)			((pmd_val(x) & ~PAGE_MASK))
 #define pmd_present(x)			(pmd_val(x))
+#define pmd_large(x)			(pmd_val(pmd) & _PAGE_HW_SZ)
 #define pmd_clear(xp)			do { pmd_val(*(xp)) = 0; } while (0)
 
 #define pte_page(pte)		pfn_to_page(pte_pfn(pte))
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: steven.price@arm.com (Steven Price)
To: linux-snps-arc@lists.infradead.org
Subject: [PATCH v5 01/19] arc: mm: Add p?d_large() definitions
Date: Thu, 21 Mar 2019 14:19:35 +0000	[thread overview]
Message-ID: <20190321141953.31960-2-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 arc, we only have two levels, so only pmd_large() is needed.

CC: Vineet Gupta <vgupta at synopsys.com>
CC: linux-snps-arc at lists.infradead.org
Signed-off-by: Steven Price <steven.price at arm.com>
Acked-by: Vineet Gupta <vgupta at synopsys.com>
---
 arch/arc/include/asm/pgtable.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index cf4be70d5892..0edd27bc7018 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -277,6 +277,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
 #define pmd_none(x)			(!pmd_val(x))
 #define	pmd_bad(x)			((pmd_val(x) & ~PAGE_MASK))
 #define pmd_present(x)			(pmd_val(x))
+#define pmd_large(x)			(pmd_val(pmd) & _PAGE_HW_SZ)
 #define pmd_clear(xp)			do { pmd_val(*(xp)) = 0; } while (0)
 
 #define pte_page(pte)		pfn_to_page(pte_pfn(pte))
-- 
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>,
	"Vineet Gupta" <vgupta@synopsys.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-snps-arc@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, "Liang,
	Kan" <kan.liang@linux.intel.com>
Subject: [PATCH v5 01/19] arc: mm: Add p?d_large() definitions
Date: Thu, 21 Mar 2019 14:19:35 +0000	[thread overview]
Message-ID: <20190321141953.31960-2-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 arc, we only have two levels, so only pmd_large() is needed.

CC: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc@lists.infradead.org
Signed-off-by: Steven Price <steven.price@arm.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
---
 arch/arc/include/asm/pgtable.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index cf4be70d5892..0edd27bc7018 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -277,6 +277,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
 #define pmd_none(x)			(!pmd_val(x))
 #define	pmd_bad(x)			((pmd_val(x) & ~PAGE_MASK))
 #define pmd_present(x)			(pmd_val(x))
+#define pmd_large(x)			(pmd_val(pmd) & _PAGE_HW_SZ)
 #define pmd_clear(xp)			do { pmd_val(*(xp)) = 0; } while (0)
 
 #define pte_page(pte)		pfn_to_page(pte_pfn(pte))
-- 
2.20.1


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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  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 ` Steven Price [this message]
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 ` [PATCH v5 02/19] arm64: " Steven Price
2019-03-21 14:19   ` 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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