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[Qemu-devel] Re: [PATCH] qemu/virtio: make wmb compiler barrier + commen

From: Paul Brook
Subject: [Qemu-devel] Re: [PATCH] qemu/virtio: make wmb compiler barrier + comments
Date: Wed, 11 Nov 2009 14:16:00 +0000
User-agent: KMail/1.12.2 (Linux/2.6.30-2-amd64; KDE/4.3.2; x86_64; ; )

On Wednesday 11 November 2009, Michael S. Tsirkin wrote:
> On Wed, Nov 11, 2009 at 01:45:35PM +0000, Paul Brook wrote:
> > If you don't need real barriers, then why does the kvm code have them?
> We need real barriers but AFAIK kvm does not have them :(
> IOW: virtio is currently broken with kvm, and my patch did
> not fix this. The comment that I added says as much.

So your code just makes the bug harder to reproduce? Doesn't sound like a good 
thing to me.


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