From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
David Howells <dhowells@redhat.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Helge Deller <deller@gmx.de>,
"James E.J. Bottomley" <jejb@parisc-linux.org>,
Koichi Yasutake <yasutake.koichi@jp.panasonic.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: Re: [PATCHv3 01/17] mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines
Date: Thu, 26 Feb 2015 22:04:55 +0200 [thread overview]
Message-ID: <20150226200455.GB14117@fuloong-minipc.musicnaut.iki.fi> (raw)
In-Reply-To: <1424950520-90188-2-git-send-email-kirill.shutemov@linux.intel.com>
Hi,
On Thu, Feb 26, 2015 at 01:35:04PM +0200, Kirill A. Shutemov wrote:
> Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
> table levels folded. Usually, these defines are provided by
> <asm-generic/pgtable-nopmd.h> and <asm-generic/pgtable-nopud.h>.
>
> But some architectures fold page table levels in a custom way. They need
> to define these macros themself. This patch adds missing defines.
>
> The patch fixes mm->nr_pmds underflow and eliminates dead __pmd_alloc()
> and __pud_alloc() on architectures without these page table levels.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
PA-RISC change:
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
A.
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next prev parent reply other threads:[~2015-02-26 20:05 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-26 11:35 [PATCHv3 00/17] Add missing __PAGETABLE_{PUD,PMD}_FOLDED defines and introduce CONFIG_PGTABLE_LEVELS Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 01/17] mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines Kirill A. Shutemov
2015-02-26 20:04 ` Aaro Koskinen [this message]
2015-02-26 11:35 ` [PATCHv3 02/17] alpha: expose number of page table levels on Kconfig level Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 03/17] arm64: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 04/17] arm: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 05/17] ia64: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 06/17] m68k: mark PMD folded and expose number of page table levels Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 07/17] mips: expose number of page table levels on Kconfig level Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 08/17] parisc: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 09/17] powerpc: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 10/17] s390: expose number of page table levels Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 11/17] sh: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 12/17] sparc: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 13/17] tile: " Kirill A. Shutemov
2015-02-26 15:23 ` Chris Metcalf
2015-02-26 11:35 ` [PATCHv3 14/17] um: " Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 15/17] x86: expose number of page table levels on Kconfig level Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 16/17] mm: define default PGTABLE_LEVELS to two Kirill A. Shutemov
2015-02-26 11:35 ` [PATCHv3 17/17] mm: do not add nr_pmds into mm_struct if PMD is folded Kirill A. Shutemov
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