linux-kernel - Re: v3.4 boot failure on qemu-system-arm -M versatilepb

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Date:	Tue, 29 May 2012 15:02:41 -0500
From:	Rob Herring <robherring2@...il.com>
To:	takuo.koguchi.sw@...achi.com
CC:	linux-kernel@...r.kernel.org, linus.walleij@...aro.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: v3.4 boot failure on qemu-system-arm -M versatilepb

Adding linux-arm-kernel...

On 05/28/2012 09:22 AM, takuo.koguchi.sw@...achi.com wrote:
> Hi,
> 
> I found linux-3.4 kernel fails to mount the rootfs on
> "qemu-system-arm -M versatile."
> 
> Git bisect shows commit c334bc1 cause this first.
> 
> So I tried to revert it by putting
> arch/arm/mach-versatile/include/mach/io.h and adding select
> NEED_MACH_IO_H in the section of ARCH_VERSATILE in arch/arm/Kconfig,
> then the kernel can mount the rootfs.
> 
> Can someone confirm and fix this?
> 

What config are you using, and what is your kernel command line?

Rob

> Takuo Koguchi
> 
> 
> ----------- Uncompressing Linux... done, booting the kernel. Booting
> Linux on physical CPU 0 Initializing cgroup subsys cpuset 
> Initializing cgroup subsys cpu Linux version 3.4.0-yocto-standard
> (koguchi@...0k) (gcc version 4.5.2 (Sourcery G++ Lite 2011.03-41) )
> #37 PREEMPT Sun May 27 22:36:22 JST 2012 CPU: ARM926EJ-S [41069265]
> revision 5 (ARMv5TEJ), cr=00093177 CPU: VIVT data cache, VIVT
> instruction cache Machine: ARM-Versatile PB ... eth0: link up 
> IP-Config: Complete: device=eth0, addr=192.168.7.3,
> mask=255.255.255.0, gw=192.168.7.1 host=192.168.7.3, domain=,
> nis-domain=(none) bootserver=255.255.255.255,
> rootserver=255.255.255.255, rootpath= input: AT Raw Set 2 keyboard as
> /devices/fpga:06/serio0/input/input0 md: Skipping autodetection of
> RAID arrays. (raid=autodetect will force) VFS: Cannot open root
> device "0x0800" or unknown-block(8,0): error -6 Please append a
> correct "root=" boot option; here are the available partitions: 
> Kernel panic - not syncing: VFS: Unable to mount root fs on
> unknown-block(8,0) [<c0013870>] (unwind_backtrace+0x0/0xec) from
> [<c0389b68>] (dump_stack+0x20/0x24) [<c0389b68>]
> (dump_stack+0x20/0x24) from [<c0389bf4>] (panic+0x88/0x1c4) 
> [<c0389bf4>] (panic+0x88/0x1c4) from [<c04fbde8>]
> (mount_block_root+0x240/0x290) [<c04fbde8>]
> (mount_block_root+0x240/0x290) from [<c04fbf80>]
> (mount_root+0x50/0x68) [<c04fbf80>] (mount_root+0x50/0x68) from
> [<c04fc108>] (prepare_namespace+0x170/0x1d0) [<c04fc108>]
> (prepare_namespace+0x170/0x1d0) from [<c04fba08>]
> (kernel_init+0x1bc/0x204) [<c04fba08>] (kernel_init+0x1bc/0x204) from
> [<c000e7dc>] (kernel_thread_exit+0x0/0x8)
> 
> 
> 
> 
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