linux-kernel - Re: 2.6.25-rc8-mm2: CONFIG_ATA_SFF: panic involving mount_block

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Message-ID: <20080412005917.GA4742@martell.zuzino.mipt.ru>
Date:	Sat, 12 Apr 2008 04:59:17 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: 2.6.25-rc8-mm2: CONFIG_ATA_SFF: panic involving
	mount_block_root and down the road

On Sat, Apr 12, 2008 at 03:43:45AM +0400, Alexey Dobriyan wrote:
> Pekka fixed SLUB for me, and now core2 box survives up and including to
> not finding / :
> 
> Setup is SATA disk with plain old partitions, nothing lvmancy:
> 
> 	/dev/sda2 on / type ext3 (rw,noatime)
> 
> CONFIG_ATA=y
> CONFIG_ATA_ACPI=y
> CONFIG_SATA_AHCI=y
> CONFIG_ATA_PIIX=y
> CONFIG_PATA_JMICRON=y
> 
> sda1 is for swap.
> 
> 
> [    3.920000] NET: Registered protocol family 1
> [    3.920000] VFS: Cannot open root device "sda2" or unknown-block(0,0)

The winner is partly me, partly git-libata-all.

The latter introduced CONFIG_ATA_SFF option and put more or less every
SATA and PATA driver under it. The former honestly answered N to when
ATA_SFF popped up and failed to check existence of ATA_PIIX and
PATA_JMICRON in failing .config .

Now raise hands those who knew that your ATA controller is SFF
compliant.

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