linux-kernel - Re: memory beyond4GB invisible to the system even though CONFIG

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Message-ID: <baeb34bc0901151150w4ad88du78d91f6db50983e1@mail.gmail.com>
Date:	Thu, 15 Jan 2009 14:50:17 -0500
From:	"James Kirin" <james.kirin40@...il.com>
To:	"Yinghai Lu" <yinghai@...nel.org>
Cc:	"Roland Dreier" <rdreier@...co.com>, linux-kernel@...r.kernel.org
Subject: Re: memory beyond4GB invisible to the system even though CONFIG_HIGHMEM64G=y

Hi Yinghai,

> please do
> 1. boot linux with "disable_mtrr_trim" in grub.conf etc
> 2. after booting input:
> echo "base=0x100000000 size=0x20000000 type=write-back" >/proc/mtrr

Thank you for your suggestion.

Unfortunately, booting with disable_mtrr_trim leads to a kernel panic:

[<c0103abb>] kernel_thread_helper+0x7/0x1c
===========
Code: 0c 31 d2 89 e8 e8 c2 f4 ff ff 89 c3 eb 8e 8b 85 cc 00 00 00 89 44 24 10 83
bd ec 00 01 00 04 0f 84 cf 00 00 00 8b 9d f0 00 01 00 <8b> 43 10 3b 43 0c 0f 84
d5 00 00 00 8b 53 10 8b 85 ec 00 01 00
EIP: [<c026bc2f] hid_parser_main+0xcf/0x290 SS:ESP 0068:f7c2bd7c
---[ end trace 34615b445589fbb6 ]---
Kernel panic - not syncing: Attempted to kill init!

I am attaching the kernel config file. The system boots fine if I
remove "disable_mtrr_trim" from lilo.conf (and rerun lilo).

Thank you for any help,

James

Download attachment "kernel.config" of type "application/octet-stream" (46613 bytes)