| Message ID | 20190731154603.41797-4-steven.price@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
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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>,
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linux-kernel@vger.kernel.org, Mark Rutland <Mark.Rutland@arm.com>, "Liang,
Kan" <kan.liang@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>,
Russell King <linux@armlinux.org.uk>
Subject: [PATCH v10 03/22] arm: mm: Add p?d_leaf() definitions
Date: Wed, 31 Jul 2019 16:45:44 +0100
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| Series |
Generic page walk and ptdump
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expand
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diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h index 51beec41d48c..0d3ea35c97fe 100644 --- a/arch/arm/include/asm/pgtable-2level.h +++ b/arch/arm/include/asm/pgtable-2level.h @@ -189,6 +189,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) } #define pmd_large(pmd) (pmd_val(pmd) & 2) +#define pmd_leaf(pmd) (pmd_val(pmd) & 2) #define pmd_bad(pmd) (pmd_val(pmd) & 2) #define pmd_present(pmd) (pmd_val(pmd)) diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 5b18295021a0..ad55ab068dbf 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -134,6 +134,7 @@ #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_SECT) #define pmd_large(pmd) pmd_sect(pmd) +#define pmd_leaf(pmd) pmd_sect(pmd) #define pud_clear(pudp) \ do { \
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 arm pmd_large() already exists and does what we want. So simply provide the generic pmd_leaf() name. CC: Russell King <linux@armlinux.org.uk> CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm/include/asm/pgtable-2level.h | 1 + arch/arm/include/asm/pgtable-3level.h | 1 + 2 files changed, 2 insertions(+)