linux-kernel - Re: intelligent CLS kills qemu's 8139cp

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Message-ID: <20091218092814.12b535b5@jbarnes-piketon>
Date:	Fri, 18 Dec 2009 09:28:14 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	tj@...nel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-netdev@...r.kernel.org
Subject: Re: intelligent CLS kills qemu's 8139cp

On Fri, 18 Dec 2009 15:49:18 +0200
Alexey Dobriyan <adobriyan@...il.com> wrote:

> After this patch qemu's 8139cp won't be initialized resulting in no
> network. It einvals in pci_set_cacheline_size() where
> pci_cache_line_size=0
> 
> PCI: CLS 0 bytes, default 32
> 
> ac1aa47b131416a6ff37eb1005a0a1d2541aad6c is first bad commit
> commit ac1aa47b131416a6ff37eb1005a0a1d2541aad6c
> Author: Jesse Barnes <jbarnes@...tuousgeek.org>
> Date:   Mon Oct 26 13:20:44 2009 -0700
> 
>     PCI: determine CLS more intelligently

My for-linus branch has

commit 2820f333e3b4ad96590093efbed7b3400bcf492b
Author: Csaba Henk <csaba@...ster.com>
Date:   Tue Dec 15 17:55:25 2009 +0530

    PCI: Handle case when no pci device can provide cache line size hint

which may fix this issue.  You can grab my tree from
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

Jesse

-- 
Jesse Barnes, Intel Open Source Technology Center
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