lkml.org 
[lkml]   [2019]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v7 1/7] iommu/vt-d: Don't switch off swiotlb if use direct dma
On Sat, Aug 24, 2019 at 10:17:30AM +0800, Lu Baolu wrote:
> If a system has any external port, through which an untrusted device
> might be connected, the external port itself should be marked as an
> untrusted device, and all devices beneath it just inherit this
> attribution.

Okay, makes sense.

> So during iommu driver initialization, we can easily know whether the
> system has (or potentially has) untrusted devices by iterating the
> device tree. I will add such check in the next version if no objections.

Sounds good, thanks Baolu.


Joerg

\
 
 \ /
  Last update: 2019-08-30 12:32    [W:0.059 / U:27.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site