lkml.org 
[lkml]   [2024]   [Apr]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/2] iommu/vt-d: Remove caching mode check before devtlb flush
Hi Kevin,

On Wed, 10 Apr 2024 00:32:06 +0000, "Tian, Kevin" <kevin.tian@intel.com>
wrote:

> > From: Jacob Pan <jacob.jun.pan@linux.intel.com>
> > Sent: Wednesday, April 10, 2024 1:32 AM
> >
> > If the guest uses SL page tables in vIOMMU, we don;t expose ATS to the
> > guest. So ATS is not relevant here, does't matter map or unmap.
> >
>
> ATS is orthogonal to SL vs. FL. Where is this restriction coming from?
For practical purposes, what would be the usage to have SL in the guest and
ATS enabled. i.e. shadowing SL but directly expose ATS?

Thanks,

Jacob

\
 
 \ /
  Last update: 2024-05-27 16:33    [W:0.684 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site