From: Paul Burton <paul.burton@mips.com>
To: Steven Price <steven.price@arm.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"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" <x86@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Mark Rutland" <Mark.Rutland@arm.com>,
"Liang, Kan" <kan.liang@linux.intel.com>,
"Ralf Baechle" <ralf@linux-mips.org>,
"James Hogan" <jhogan@kernel.org>,
"linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>
Subject: Re: [PATCH v4 03/19] mips: mm: Add p?d_large() definitions
Date: Wed, 6 Mar 2019 17:12:58 +0000 [thread overview]
Message-ID: <20190306171257.5eii6aqpfp6kvszb@pburton-laptop> (raw)
In-Reply-To: <20190306155031.4291-4-steven.price@arm.com>
Hi Steven,
On Wed, Mar 06, 2019 at 03:50:15PM +0000, Steven Price wrote:
> 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_large() functions/macros.
>
> For mips, we only support large pages on 64 bit.
>
> For 64 bit if _PAGE_HUGE is defined we can simply look for it. When not
> defined we can be confident that there are no large pages in existence
> and fall back on the generic implementation (added in a later patch)
> which returns 0.
>
> CC: Ralf Baechle <ralf@linux-mips.org>
> CC: Paul Burton <paul.burton@mips.com>
> CC: James Hogan <jhogan@kernel.org>
> CC: linux-mips@vger.kernel.org
> Signed-off-by: Steven Price <steven.price@arm.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Thanks,
Paul
next prev parent reply other threads:[~2019-03-06 17:13 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 ` [PATCH v4 02/19] arm64: " Steven Price
2019-03-06 15:50 ` [PATCH v4 03/19] mips: " Steven Price
2019-03-06 17:12 ` Paul Burton [this message]
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
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