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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@kernel.org>,
	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>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"David S. Miller" <davem@davemloft.net>,
	sparclinux@vger.kernel.org
Subject: [PATCH v13 09/22] sparc: mm: Add p?d_leaf() definitions
Date: Thu, 24 Oct 2019 10:37:03 +0100	[thread overview]
Message-ID: <20191024093716.49420-10-steven.price@arm.com> (raw)
In-Reply-To: <20191024093716.49420-1-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_leaf() functions/macros.

For sparc 64 bit, pmd_large() and pud_large() are already provided, so
add macros to provide the p?d_leaf names required by the generic code.

CC: "David S. Miller" <davem@davemloft.net>
CC: sparclinux@vger.kernel.org
Signed-off-by: Steven Price <steven.price@arm.com>
---
 arch/sparc/include/asm/pgtable_64.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 6ae8016ef4ec..43206652eaf5 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -683,6 +683,7 @@ static inline unsigned long pte_special(pte_t pte)
 	return pte_val(pte) & _PAGE_SPECIAL;
 }
 
+#define pmd_leaf	pmd_large
 static inline unsigned long pmd_large(pmd_t pmd)
 {
 	pte_t pte = __pte(pmd_val(pmd));
@@ -867,6 +868,7 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
 /* only used by the stubbed out hugetlb gup code, should never be called */
 #define pgd_page(pgd)			NULL
 
+#define pud_leaf	pud_large
 static inline unsigned long pud_large(pud_t pud)
 {
 	pte_t pte = __pte(pud_val(pud));
-- 
2.20.1


  parent reply	other threads:[~2019-10-24  9:38 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-24  9:36 [PATCH v13 00/22] Generic page walk and ptdump Steven Price
2019-10-24  9:36 ` [PATCH v13 01/22] mm: Add generic p?d_leaf() macros Steven Price
2019-10-24  9:36 ` [PATCH v13 02/22] arc: mm: Add p?d_leaf() definitions Steven Price
2019-10-24  9:36 ` [PATCH v13 03/22] arm: " Steven Price
2019-10-24  9:36 ` [PATCH v13 04/22] arm64: " Steven Price
2019-10-24  9:36 ` [PATCH v13 05/22] mips: " Steven Price
2019-10-24  9:37 ` [PATCH v13 06/22] powerpc: " Steven Price
2019-10-24  9:37 ` [PATCH v13 07/22] riscv: " Steven Price
2019-10-24 13:09   ` Zong Li
2019-10-24  9:37 ` [PATCH v13 08/22] s390: " Steven Price
2019-10-24  9:37 ` Steven Price [this message]
2019-10-24 16:46   ` [PATCH v13 09/22] sparc: " David Miller
2019-10-24  9:37 ` [PATCH v13 10/22] x86: " Steven Price
2019-10-24  9:37 ` [PATCH v13 11/22] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price
2019-10-24  9:37 ` [PATCH v13 12/22] mm: pagewalk: Allow walking without vma Steven Price
2019-10-27  7:59   ` kbuild test robot
2019-10-28 10:46     ` Steven Price
2019-10-24  9:37 ` [PATCH v13 13/22] mm: pagewalk: Add test_p?d callbacks Steven Price
2019-10-24  9:37 ` [PATCH v13 14/22] mm: pagewalk: Add 'depth' parameter to pte_hole Steven Price
2019-10-24  9:37 ` [PATCH v13 15/22] x86: mm: Point to struct seq_file from struct pg_state Steven Price
2019-10-24  9:37 ` [PATCH v13 16/22] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price
2019-10-24  9:37 ` [PATCH v13 17/22] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price
2019-10-24  9:37 ` [PATCH v13 18/22] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price
2019-10-24  9:37 ` [PATCH v13 19/22] mm: Add generic ptdump Steven Price
2019-10-24  9:37 ` [PATCH v13 20/22] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price
2019-10-24  9:37 ` [PATCH v13 21/22] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price
2019-10-24  9:37 ` [PATCH v13 22/22] arm64: mm: Display non-present entries in ptdump Steven Price

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