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 v7 01/20] arc: mm: Add p?d_large() definitions
Date: Thu, 28 Mar 2019 15:20:45 +0000 [thread overview]
Message-ID: <20190328152104.23106-2-steven.price@arm.com> (raw)
In-Reply-To: <20190328152104.23106-1-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 v7 01/20] arc: mm: Add p?d_large() definitions
Date: Thu, 28 Mar 2019 15:20:45 +0000 [thread overview]
Message-ID: <20190328152104.23106-2-steven.price@arm.com> (raw)
In-Reply-To: <20190328152104.23106-1-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 v7 01/20] arc: mm: Add p?d_large() definitions
Date: Thu, 28 Mar 2019 15:20:45 +0000 [thread overview]
Message-ID: <20190328152104.23106-2-steven.price@arm.com> (raw)
In-Reply-To: <20190328152104.23106-1-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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next prev parent reply other threads:[~2019-03-28 15:21 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-28 15:20 [PATCH v7 00/20] Convert x86 & arm64 to use generic page walk Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` Steven Price [this message]
2019-03-28 15:20 ` [PATCH v7 01/20] arc: mm: Add p?d_large() definitions Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 02/20] arm64: " Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 03/20] mips: " Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 04/20] powerpc: " Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 05/20] KVM: PPC: Book3S HV: Remove pmd_is_leaf() Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 06/20] riscv: mm: Add p?d_large() definitions Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 07/20] s390: " Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 08/20] sparc: " Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 09/20] x86: " Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 10/20] mm: Add generic p?d_large() macros Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 11/20] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 12/20] mm: pagewalk: Allow walking without vma Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 13/20] mm: pagewalk: Add test_p?d callbacks Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 14/20] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:20 ` [PATCH v7 15/20] x86: mm: Don't display pages which aren't present in debugfs Steven Price
2019-03-28 15:20 ` Steven Price
2019-03-28 15:21 ` [PATCH v7 16/20] x86: mm: Point to struct seq_file from struct pg_state Steven Price
2019-03-28 15:21 ` Steven Price
2019-03-28 15:21 ` [PATCH v7 17/20] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price
2019-03-28 15:21 ` Steven Price
2019-03-28 15:21 ` [PATCH v7 18/20] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price
2019-03-28 15:21 ` Steven Price
2019-03-28 15:21 ` [PATCH v7 19/20] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price
2019-03-28 15:21 ` Steven Price
2019-03-28 15:21 ` [PATCH v7 20/20] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price
2019-03-28 15:21 ` Steven Price
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