Re: [Xen-devel] [PATCH v8 7/7] vtd: add lookup_page method to iommu_ops

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: 13 September 2018 14:57
> To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Cc: George Dunlap <George.Dunlap@xxxxxxxxxx>; Wei Liu
> <wei.liu2@xxxxxxxxxx>; Kevin Tian <kevin.tian@xxxxxxxxx>; xen-devel <xen-
> devel@xxxxxxxxxxxxxxxxxxxx>
> Subject: RE: [PATCH v8 7/7] vtd: add lookup_page method to iommu_ops
> 
> >>> On 13.09.18 at 15:50, <Paul.Durrant@xxxxxxxxxx> wrote:
> > Ok. I'll spell it out in the header if you think it is non-obvious.
> 
> Obvious or not - do we _have_ any such outer locking in place right now?
> 

Yes. The locking is either via the P2M or grant table locks for all current 
uses or map and unmap that I can see.

  Paul

> Jan
> 


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel