Re: [Xen-devel] PCI passthrough issue

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2011-02-01 at 22:06 +0000, Jean Baptiste Favre wrote:
> Le 01/02/2011 20:37, Konrad Rzeszutek Wilk a écrit :
> > On Tue, Feb 01, 2011 at 04:23:09PM +0000, Ian Campbell wrote:

> >> Konrad, is there some way to force swiotlb use even for native to make
> >> the native test cases more relevant? Or is there some other direction we
> > 
> > swiotlb=force will do it.
> I already use this option as specified on wiki:
> http://wiki.xen.org/xenwiki/XenPCIpassthrough

Yes, we were just confirming that you should also use this option for
your native tests.

> 
> >> should try first?
> > 
> > <shakes his head> I think we have a good lead.
> So let's go for testing that way :)
> 
> >>> It seems that adding this options in /etc/modprobe.d/sky2.conf does not
> >>> work, neither using /etc/modules
> > 
> > You could just pass as Linux kernel parameter 'sky2.copybreak=0'. But I am
> > not sure if that stays if the 'sky2' driver is compiled as module.
> According to Ian, this will work only with statically compiled driver.

Well, I'm only sure it works for a statically compiled driver. I don't
know about modules -- depends on whether modprobe groks /proc/cmdline or
something, I suspect it does not though.

Ian.


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