From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>,
Andrea Arcangeli <aarcange@redhat.com>,
Michal Hocko <mhocko@kernel.org>,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCHv4 03/12] arm/mm: Provide pmdp_establish() helper
Date: Wed, 13 Dec 2017 13:57:47 +0300 [thread overview]
Message-ID: <20171213105756.69879-4-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <20171213105756.69879-1-kirill.shutemov@linux.intel.com>
ARM LPAE doesn't have hardware dirty/accessed bits.
generic_pmdp_establish() is the right implementation of pmdp_establish
for this case.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm/include/asm/pgtable-3level.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 1a7a17b2a1ba..2a4836087358 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -249,6 +249,9 @@ PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF);
#define pfn_pmd(pfn,prot) (__pmd(((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
#define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot)
+/* No hardware dirty/accessed bits -- generic_pmdp_establish() fits */
+#define pmdp_establish generic_pmdp_establish
+
/* represent a notpresent pmd by faulting entry, this is used by pmdp_invalidate */
static inline pmd_t pmd_mknotpresent(pmd_t pmd)
{
--
2.15.0
--
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next prev parent reply other threads:[~2017-12-13 10:59 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-13 10:57 [PATCHv4 00/12] Do not lose dirty bit on THP pages Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 01/12] asm-generic: Provide generic_pmdp_establish() Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 02/12] arc: Use generic_pmdp_establish as pmdp_establish Kirill A. Shutemov
2017-12-13 10:57 ` Kirill A. Shutemov [this message]
2017-12-13 10:57 ` [PATCHv4 04/12] arm64: Provide pmdp_establish() helper Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 05/12] mips: Use generic_pmdp_establish as pmdp_establish Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 06/12] powerpc/mm: update pmdp_invalidate to return old pmd value Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 07/12] s390/mm: Modify pmdp_invalidate to return old value Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 08/12] sparc64: Update pmdp_invalidate() to return old pmd value Kirill A. Shutemov
2017-12-14 0:06 ` Andrew Morton
2017-12-13 10:57 ` [PATCHv4 09/12] x86/mm: Provide pmdp_establish() helper Kirill A. Shutemov
2017-12-14 0:09 ` Andrew Morton
2017-12-14 0:33 ` Kirill A. Shutemov
2017-12-14 0:36 ` Andrew Morton
2017-12-14 0:42 ` Kirill A. Shutemov
2017-12-15 13:49 ` Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 10/12] mm: Do not lose dirty and access bits in pmdp_invalidate() Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 11/12] mm: Use updated pmdp_invalidate() interface to track dirty/accessed bits Kirill A. Shutemov
2017-12-13 10:57 ` [PATCHv4 12/12] mm/thp: Remove pmd_huge_split_prepare Kirill A. Shutemov
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