From: "Yinghai Lu" <yinghai@kernel.org>
To: "J.A. Magallón" <jamagallon@ono.com>
Cc: Linux-Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Strange mtrrs in Aspire One
Date: Sat, 4 Oct 2008 10:55:19 -0700 [thread overview]
Message-ID: <86802c440810041055w17c42136l6884880acdb40e98@mail.gmail.com> (raw)
In-Reply-To: <20081004152235.387a6f61@werewolf.home>
On Sat, Oct 4, 2008 at 6:22 AM, J.A. Magallón <jamagallon@ono.com> wrote:
> On Mon, 29 Sep 2008 18:05:51 -0700, "Yinghai Lu" <yinghai@kernel.org> wrote:
>
>> On Mon, Sep 29, 2008 at 4:57 PM, J.A. Magallón <jamagallon@ono.com> wrote:
>> > Hi all...
>> >
>> > My aspire one is giving some strange MTRR settings with rc7-git5 (and
>> > prevous kernels, but that is what I run now...):
>> >
>> > one:~> cat /proc/mtrr
>> > reg00: base=0xfffe0000 (4095MB), size= 128KB: write-protect, count=1
>> > reg01: base=0xfffc0000 (4095MB), size= 128KB: uncachable, count=1
>>
>> could make mtrr_cleanup to support 128K gran_size
>>
>> > reg02: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1
>> > reg03: base=0x10000000 ( 256MB), size= 256MB: write-back, count=1
>> > reg04: base=0x1f800000 ( 504MB), size= 8MB: uncachable, count=1
>> > reg05: base=0x1f600000 ( 502MB), size= 2MB: uncachable, count=1
>> > reg06: base=0x1f500000 ( 501MB), size= 1MB: uncachable, count=1
>>
>> > reg07: base=0x00000000 ( 0MB), size= 128KB: uncachable, count=1
>> ..
>> > BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
>>
>> last entry is really sick...
>>
>
> I have applied the patches you have posted in other threads, and this
> give a very strange result. The mtrr cleanup did nothing, and I had to put
> some printk's all around.
will have one patch to assume the [0, 1M) to be coverred by var mtrrs.
YH
next prev parent reply other threads:[~2008-10-04 17:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-29 23:57 J.A. Magallón
2008-09-30 1:05 ` Yinghai Lu
2008-10-04 13:22 ` J.A. Magallón
2008-10-04 17:55 ` Yinghai Lu [this message]
2008-10-04 21:54 ` Yinghai Lu
2008-10-04 23:02 ` J.A. Magallón
2008-10-04 23:10 ` Yinghai Lu
2008-10-06 0:39 ` J.A. Magallón
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