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From: Yinghai Lu <yinghai@kernel.org>
To: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [BUG?] mtrr sanitizer fails on Latitude E6230
Date: Wed, 6 Nov 2013 12:08:12 -0800	[thread overview]
Message-ID: <CAE9FiQX3mGLmzFCyaHYPBA2QgvxBYr9zarXcUKa5DC0ZtiiWZw@mail.gmail.com> (raw)
In-Reply-To: <21114.2315.610902.200164@gargle.gargle.HOWL>

On Wed, Nov 6, 2013 at 1:16 AM, Mikael Pettersson <mikpelinux@gmail.com> wrote:
> I recently got a Dell Latitude E6230 (Ivy Bridge i7-3540M) and noticed that
> the mtrr sanitizer failed on it:
>
> === snip ===
> Linux version 3.12.0 (mikpe@barley) (gcc version 4.8.3 20131017 (prerelease) (GCC) ) #1 SMP Wed Nov 6 09:46:02 CET 2013
> Command line: ro root=LABEL=/ resume=/dev/sda2 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=sv-latin1
...
gran_size: 8M  chunk_size: 64M         num_reg: 9      lose cover RAM: 6M
...
> mtrr_cleanup: can not find optimal value
> please specify mtrr_gran_size/mtrr_chunk_size
> === snip ===
>
> For now I'm disabling the mtrr sanitizer in this machine's kernel.

Can you try to boot with "mtrr_gran_size=8m mtrr_chunk_size=64m" ?

Thanks

Yinghai

  reply	other threads:[~2013-11-06 20:08 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-06  9:16 [BUG?] mtrr sanitizer fails on Latitude E6230 Mikael Pettersson
2013-11-06 20:08 ` Yinghai Lu [this message]
2013-11-07  8:25   ` Mikael Pettersson
2013-11-07 20:12     ` Yinghai Lu
2013-11-08  8:19       ` Mikael Pettersson

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