From: Fuxin Zhang <fxzhang@ict.ac.cn>
To: Linux/MIPS Development <linux-mips@linux-mips.org>
Subject: Re: linker script for non-4k page size
Date: Sun, 11 Dec 2005 10:56:38 +0800 [thread overview]
Message-ID: <439B9566.3020607@ict.ac.cn> (raw)
In-Reply-To: <439B9104.6000605@ict.ac.cn>
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BTW: except this problem, 2.6.14 with 16k page size runs well on my
machine. According to our experiences of 2.4 kernels, 16k page size
has a bit benefit over 4k page size(average 6% improvement for spec
cpu2000 int).
But to use 16k kernel, we have to convert binaries of debian/mips:
their sections are often not 16k aligned untill the latest testing branch.
Fuxin Zhang дµÀ:
> hi,
> I come across a problem when trying to use 16k page size for 2.6.14
> linux/mips kernel: arch/mips/kernel/vmlinux.lds.S align some sections
> with hardcoded ". = ALIGN(4096)".
> This will lead to problem if non-4k page size is used. For example,
> if the .init section is put at a page 4k-aligned but not 16k-aligned,
> free_initmem will free more spaces than it should do, and strange
> problems will occur.
> Should we change to alignment according to CONFIG_PAGE_SIZE_XX? or
> just set it to largest possible value(this may cause size increasement?)
>
>
>
>
>
next prev parent reply other threads:[~2006-02-02 2:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-11 2:37 linker script for non-4k page size Fuxin Zhang
2005-12-11 2:56 ` Fuxin Zhang [this message]
2006-02-02 11:05 ` Thiemo Seufer
2005-12-11 11:46 ` Fuxin Zhang
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