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Re: [Xen-devel] [RFC PATCH v2 13/22] xen/arm: its: Add virtual ITS command support
- To: Vijay Kilari <vijay.kilari@xxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
- From: Julien Grall <julien.grall@xxxxxxxxxx>
- Date: Tue, 5 May 2015 12:47:17 +0100
- Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>, Prasun Kapoor <Prasun.Kapoor@xxxxxxxxxxxxxxxxxx>, Vijaya Kumar K <vijaya.kumar@xxxxxxxxxxxxxxxxxx>, Julien Grall <julien.grall@xxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>, Julien Grall <julien.grall@xxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>, manish.jaggi@xxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 05 May 2015 11:47:53 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On 05/05/15 12:06, Vijay Kilari wrote:
> One MSI per domain is always consumed because each domain during
> ITS initialization creates Virtual ITS and sends basic initialization
> commands (MAPC)
AFAICT, MAPC won't be translated to a physical command. So not interrupt
completion is necessary.
Couldn't we defer the interrupt completion allocation until a PCI device
is passthrough or a command requiring physical command is sent?
Regards,
--
Julien Grall
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