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From: Laszlo Ersek <lersek@redhat.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: Re: [RFC PATCH linux-2.6.18-xen] pciback: clean up (MSI-X vec, entrynr) list when resetting PCI device
Date: Wed, 01 Jun 2011 19:32:54 +0200	[thread overview]
Message-ID: <4DE677C6.6040701@redhat.com> (raw)
In-Reply-To: <20110601143100.GE4081@dumpdata.com>

On 06/01/11 16:31, Konrad Rzeszutek Wilk wrote:
> On Wed, Jun 01, 2011 at 01:02:02PM +0200, Laszlo Ersek wrote:
>> (Perhaps it's best to write a separate mail about this.)
>
> Yes. You did use 'iommu=soft' on your bootup line right?

I thought I did; turns out I was wrong. Sorry for the noise.

Now I tried with "iommu=soft swiotlb=force", but this way the guest 
immediately disappears; it doesn't even start to produce console output.

# xm create -c f15-64bit-pv
Using config file "/etc/xen/f15-64bit-pv".
Using <class 'grub.GrubConf.GrubConfigFile'> to parse /grub/menu.lst
Started domain f15-64bit-pv
#

http://wiki.xen.org/xenwiki/XenPCIpassthrough says though:

     Bugs:

     # Starting the DomU using pvgrub with 'iommu=soft swiotlb=force'
     breaks pvgrub.

Perhaps that could be the reason. Removing "swiotlb=force" and keeping 
only "iommu=soft" crashes (?) the same way.

Thanks,
lacos

  parent reply	other threads:[~2011-06-01 17:32 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-01 10:05 [RFC PATCH linux-2.6.18-xen] pciback: clean up (MSI-X vec, entrynr) list when resetting PCI device Laszlo Ersek
2011-06-01 11:02 ` Laszlo Ersek
2011-06-01 14:31   ` Konrad Rzeszutek Wilk
2011-06-01 16:18     ` Paolo Bonzini
2011-06-01 17:32     ` Laszlo Ersek [this message]
2011-06-01 18:13       ` 2.6.38 (FC15) with PCI passthrough fails mysteriously with iommu=soft Konrad Rzeszutek Wilk
2011-06-02  7:42         ` Laszlo Ersek
2011-06-02 20:49         ` Pasi Kärkkäinen
2011-06-01 12:56 ` [RFC PATCH linux-2.6.18-xen] pciback: clean up (MSI-X vec, entrynr) list when resetting PCI device Jan Beulich
2011-06-01 14:12   ` Laszlo Ersek
2011-06-01 14:59     ` Jan Beulich
2011-06-01 15:27       ` Laszlo Ersek
2011-06-01 16:07         ` Jan Beulich
2011-06-01 16:25           ` Andrew Jones
2011-06-01 16:27             ` Paolo Bonzini
2011-06-01 16:16       ` Paolo Bonzini
2011-06-01 14:51 ` Konrad Rzeszutek Wilk
2011-06-01 15:01   ` Konrad Rzeszutek Wilk

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