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>
Subject: [PATCH v4 02/19] arm64: mm: Add p?d_large() definitions
Date: Wed, 6 Mar 2019 15:50:14 +0000 [thread overview]
Message-ID: <20190306155031.4291-3-steven.price@arm.com> (raw)
In-Reply-To: <20190306155031.4291-1-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 arm64, we already have p?d_sect() macros which we can reuse for
p?d_large().
CC: Catalin Marinas <catalin.marinas@arm.com>
CC: Will Deacon <will.deacon@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
---
arch/arm64/include/asm/pgtable.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index de70c1eabf33..6eef345dbaf4 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
PMD_TYPE_TABLE)
#define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
PMD_TYPE_SECT)
+#define pmd_large(pmd) pmd_sect(pmd)
#if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
#define pud_sect(pud) (0)
@@ -511,6 +512,7 @@ static inline phys_addr_t pmd_page_paddr(pmd_t pmd)
#define pud_none(pud) (!pud_val(pud))
#define pud_bad(pud) (!(pud_val(pud) & PUD_TABLE_BIT))
#define pud_present(pud) pte_present(pud_pte(pud))
+#define pud_large(pud) pud_sect(pud)
#define pud_valid(pud) pte_valid(pud_pte(pud))
static inline void set_pud(pud_t *pudp, pud_t pud)
--
2.20.1
next prev parent reply other threads:[~2019-03-06 15:50 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-06 15:50 [PATCH v4 00/19] Convert x86 & arm64 to use generic page walk Steven Price
2019-03-06 15:50 ` [PATCH v4 01/19] arc: mm: Add p?d_large() definitions Steven Price
2019-03-06 15:50 ` Steven Price [this message]
2019-03-06 15:50 ` [PATCH v4 03/19] mips: " Steven Price
2019-03-06 17:12 ` Paul Burton
2019-03-06 15:50 ` [PATCH v4 04/19] powerpc: " Steven Price
2019-03-08 8:37 ` Mike Rapoport
2019-03-08 10:50 ` Steven Price
2019-03-06 15:50 ` [PATCH v4 05/19] riscv: " Steven Price
2019-03-06 15:50 ` [PATCH v4 06/19] s390: " Steven Price
2019-03-06 15:50 ` [PATCH v4 07/19] sparc: " Steven Price
2019-03-06 19:02 ` David Miller
2019-03-06 15:50 ` [PATCH v4 08/19] x86: " Steven Price
2019-03-06 15:50 ` [PATCH v4 09/19] mm: Add generic p?d_large() macros Steven Price
2019-03-06 15:50 ` [PATCH v4 10/19] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price
2019-03-06 15:50 ` [PATCH v4 11/19] mm: pagewalk: Allow walking without vma Steven Price
2019-03-06 15:50 ` [PATCH v4 12/19] mm: pagewalk: Add test_p?d callbacks Steven Price
2019-03-06 15:50 ` [PATCH v4 13/19] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price
2019-03-06 15:50 ` [PATCH v4 14/19] x86: mm: Don't display pages which aren't present in debugfs Steven Price
2019-03-06 15:50 ` [PATCH v4 15/19] x86: mm: Point to struct seq_file from struct pg_state Steven Price
2019-03-06 15:50 ` [PATCH v4 16/19] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price
2019-03-06 15:50 ` [PATCH v4 17/19] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price
2019-03-06 15:50 ` [PATCH v4 18/19] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price
2019-03-06 15:50 ` [PATCH v4 19/19] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190306155031.4291-3-steven.price@arm.com \
--to=steven.price@arm.com \
--cc=Mark.Rutland@arm.com \
--cc=ard.biesheuvel@linaro.org \
--cc=arnd@arndb.de \
--cc=bp@alien8.de \
--cc=catalin.marinas@arm.com \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=james.morse@arm.com \
--cc=jglisse@redhat.com \
--cc=kan.liang@linux.intel.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=will.deacon@arm.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).