From: Marcelo Tosatti <marcelo.tosatti@cyclades•com>
To: Dan Malek <dan@embeddededge•com>
Cc: linux-ppc-embedded <linuxppc-embedded@ozlabs•org>
Subject: Re: [PATCH] 8xx: fix usage of pinned 8Mbyte TLB entries
Date: Sat, 7 May 2005 12:47:46 -0300 [thread overview]
Message-ID: <20050507154746.GE16996@logos.cnet> (raw)
In-Reply-To: <42e4582f0d1644c2ece0a2cb86f49003@embeddededge.com>
On Sat, May 07, 2005 at 04:02:34PM -0400, Dan Malek wrote:
>
> On May 7, 2005, at 9:16 AM, Marcelo Tosatti wrote:
>
> >Not creating 4kb mappings for the first 8Mbytes of kernel
> >virtual addresses fixed the problem for me.
>
> Fixed what problem?
page faults for initial 8Mbytes of kernel virtual map.
> In the TLB dump, you replaced the initial 8M entry with
> a bunch of 4K page entries, just as I would have expected
> to happen. Since it was able to run and load these, the
> complete PTE tables must have been created.
Right, that was a dump of a "problematic" (ie 4kb pagefaults on
8Mbyte pinned region) kernel.
> How did you "not create" the 4K mappings?
I told mapin_ram() to start at KERNELBASE + 8Mb.
But, as you said, thats not necessary.
next prev parent reply other threads:[~2005-05-09 18:03 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-05 17:20 [PATCH] 8xx: fix usage of pinned 8Mbyte TLB entries Marcelo Tosatti
2005-05-06 13:04 ` Jason McMullan
2005-05-06 11:39 ` Marcelo Tosatti
2005-05-06 16:43 ` Dan Malek
2005-05-06 13:38 ` Marcelo Tosatti
2005-05-06 22:49 ` Dan Malek
2005-05-06 20:03 ` Marcelo Tosatti
2005-05-07 3:09 ` Dan Malek
2005-05-06 23:05 ` Marcelo Tosatti
2005-05-07 4:39 ` Dan Malek
2005-05-07 5:16 ` Dan Malek
2005-05-07 13:16 ` Marcelo Tosatti
2005-05-07 20:02 ` Dan Malek
2005-05-07 15:47 ` Marcelo Tosatti [this message]
2005-05-07 14:05 ` Marcelo Tosatti
2005-05-09 6:09 ` Pantelis Antoniou
2005-05-07 14:59 ` Wolfgang Denk
2005-05-07 5:27 ` Dan Malek
2005-05-07 5:55 ` Dan Malek
2005-05-06 23:10 ` Dan Malek
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