From: Samuel Thibault <samuel.thibault@eu.citrix.com>
To: Espen Skoglund <espen.skoglund@netronome.com>
Cc: xen-devel@lists.xensource.com, Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Re: PCI passthrough support via PV-PCI
Date: Wed, 2 Jul 2008 15:28:55 +0100 [thread overview]
Message-ID: <20080702142855.GM4714@implementation.uk.xensource.com> (raw)
In-Reply-To: <18539.36392.704150.333337@gargle.gargle.HOWL>
Espen Skoglund, le Wed 02 Jul 2008 15:18:16 +0100, a écrit :
> [Samuel Thibault]
> > Keir Fraser, le Wed 02 Jul 2008 13:59:42 +0100, a écrit :
> >> Shouldn't they happen from xend or pciback?
>
> > For PV guests it looks like something is done indeed, because else
> > it wouldn't work. It is probably a matter of having domctl permit
> > the stub domain to transfer these rights to the HVM guest.
>
> When I added VT-d support for PV guests I made xend do the device
> assignment iff the destination was a PV domain. Is there any reason
> why device assignment can not be performed by xend for HVM guests as
> well?
>
> Other resource assignment (IOMEM and IRQs) still seems to happen in
> xend for HVM guests as well as for PV guest. What other domctls does
> ioemu need to perform?
ioemu needs to update the mappings, see the pt_iomem_map() function.
Samuel
next prev parent reply other threads:[~2008-07-02 14:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-02 12:50 [PATCH] stubdom: PCI passthrough support via PV-PCI Samuel Thibault
2008-07-02 12:58 ` Samuel Thibault
2008-07-02 12:59 ` Keir Fraser
2008-07-02 13:29 ` Samuel Thibault
2008-07-02 14:18 ` Espen Skoglund
2008-07-02 14:28 ` Samuel Thibault [this message]
2008-07-02 16:01 ` Keir Fraser
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