SGI Octane kernel patches fail

SGI Octane kernel patches fail

[Jens Seidel]

Hi,

I have a SGI Octane IP30 and was able to boot Linux on it with the
ip30-r10k+-20050128.img Gentoo kernel. Nevertheless I noticed that
this kernel is very unstable.

Once I was lucky and able to bootstrap Debian before the kernel paniced
again (usually a "unaligned instruction access in
arch/mips/kernel/unaligned.c::do_ade, line 544[#3]").

I tried to compile a newer 2.6.19-rc1 kernel and applied the two IOC3
and IP30 patches from
ftp://ftp.linux-mips.org/pub/linux/mips/people/skylark/. First of all
the patch fails slightly and needs manual adjustments. Compiling results
in an error, do_IRQ() is called with only one parameter instead of two.

So I wonder what kernels are compatible with
linux-mips-2.6.19-rc1-ip30-r28.patch.bz2. Do I need other patches as
well? Also the kernel config file skylark-approved-config-tm in skylark/
is out of date. It seems to match a 2.6.12 or similar version.

PS: Please CC: me.

Jens

Re: SGI Octane kernel patches fail

[Stephen P. Becker]

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On Thu, 14 Dec 2006 21:35:35 +0100
Jens Seidel <jensseidel@users.sf.net> wrote:

> Hi,
> 
> I have a SGI Octane IP30 and was able to boot Linux on it with the
> ip30-r10k+-20050128.img Gentoo kernel. Nevertheless I noticed that
> this kernel is very unstable.

Yes, that kernel is ancient and known to be totally broken.  Try
http://dev.gentoo.org/~kumba/mips/netboot/testing/ip30-r10k+-20060112.img.bz2
instead.

-Steve

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Re: SGI Octane kernel patches fail

[Jens Seidel]

On Thu, Dec 14, 2006 at 09:35:35PM +0100, Jens Seidel wrote:
> I tried to compile a newer 2.6.19-rc1 kernel and applied the two IOC3
> and IP30 patches from
> ftp://ftp.linux-mips.org/pub/linux/mips/people/skylark/. First of all
> the patch fails slightly and needs manual adjustments. Compiling results
> in an error, do_IRQ() is called with only one parameter instead of two.
> 
> So I wonder what kernels are compatible with
> linux-mips-2.6.19-rc1-ip30-r28.patch.bz2. Do I need other patches as
> well? Also the kernel config file skylark-approved-config-tm in skylark/
> is out of date. It seems to match a 2.6.12 or similar version.
> 
> PS: Please CC: me.

Ah, it works fine with linux-2.6.19 (it was trivial to crosscompile). So it
seems the names of the patches are just wrong.

I still fail to mount the root fs via NFS (tcpdump reports no network
transfer after loading the kernel) and to have root on a local hard disk:
[17179594.972000] XFS: file system using version 1 directory format
[17179595.044000] XFS: SB validate failed
[17179595.092000] VFS: Cannot open root device "sdb8" or unknown-block(8,24)
[17179595.172000] Please append a correct "root=" boot option
[17179595.240000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,24)

I need to check this "SB validation". But I'm sure I'm able to embed an
initrd into the kernel as this works already with the old Gentoo kernel.

Jens