From: Aurelien Jarno <aurelien@aurel32.net>
To: Daniel Jacobowitz <dan@debian.org>
Cc: linux-mips@linux-mips.org
Subject: Re: qemu initrd and ide support
Date: Fri, 20 Oct 2006 17:48:59 +0200 [thread overview]
Message-ID: <4538EFEB.8010809@aurel32.net> (raw)
In-Reply-To: <452F9744.9010109@aurel32.net>
Aurelien Jarno a écrit :
> The initrd seems to works well, but it generates a strange failure
> during the boot:
>
> [...]
> Mount-cache hash table entries: 512
> Checking for 'wait' instruction... available.
> checking if image is initramfs...it isn't (bad gzip magic numbers);
> looks like an initrd
> Bad page state in process 'swapper'
> page:81010000 flags:0x00080000 mapping:00000000 mapcount:0 count:0
> Trying to fix it up, but a reboot is needed
> Backtrace:
> Call Trace:
> [<8005c748>] bad_page+0x68/0xa8
> [<8005ccf0>] free_hot_cold_page+0x1a4/0x1b4
> [<802a0000>] ic_bootp_recv+0x238/0x6a0
> [<80080138>] __fput+0x14c/0x1cc
> [<8001b094>] free_init_pages+0xa4/0xfc
> [<802a0000>] ic_bootp_recv+0x238/0x6a0
> [<802a0000>] ic_bootp_recv+0x238/0x6a0
> [<802a0000>] ic_bootp_recv+0x238/0x6a0
> [<80288d98>] free_initrd+0x28/0x44
> [<80288e80>] populate_rootfs+0xcc/0x110
> [<80292860>] spawn_softlockup_task+0x30/0x50
> [<80010498>] init+0x54/0x300
> [<80010498>] init+0x54/0x300
> [<80013074>] kernel_thread_helper+0x10/0x18
> [<80013064>] kernel_thread_helper+0x0/0x18
>
> Freeing initrd memory: 2520k freed
> NET: Registered protocol family 16
> NET: Registered protocol family 2
> [...]
>
> This message is not present when initrd is not used, and it also does
> not appear with the previous way of passing the size and location of the
> initrd.
>
> I don't have time to look more now, I will give you some more details
> when/if I found some time to work on that.
>
This failure is due to the fact that initrd_reserve_bootmem is not set
anymore to 1 in arch/mips/kernel/setup.c. It is set to 1 when the initrd
location and size are read from the command line arguments, but not when
read from the place where QEMU put it.
Setting this value to 1 fixes the problem, but it is rather a big hack
than a fix.
About the patch itself, another comment: you should add a #ifdef
CONFIG_BLK_DEV_INITRD #endif for the block concerning the initrd in
arch/mips/qemu/q-firmware.c
Bye,
Aurelien
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' aurel32@debian.org | aurelien@aurel32.net
`- people.debian.org/~aurel32 | www.aurel32.net
next prev parent reply other threads:[~2006-10-20 15:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-12 21:12 qemu initrd and ide support Daniel Jacobowitz
2006-10-13 13:40 ` Aurelien Jarno
2006-10-20 15:48 ` Aurelien Jarno [this message]
2006-10-23 11:45 ` Aurelien Jarno
2006-10-24 13:08 ` Aurelien Jarno
2006-10-24 15:17 ` Daniel Jacobowitz
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