[lkml]   [2019]   [Jan]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 0/3] Fix virtio-blk issue with SWIOTLB
On Fri, Jan 11, 2019 at 11:29:31AM +0800, Jason Wang wrote:
> Just wonder if my understanding is correct IOMMU_PLATFORM must be set for
> all virtio devices under AMD-SEV guests?

Yes, that is correct. Emulated DMA can only happen on the SWIOTLB
aperture, because that memory is not encrypted. The guest bounces the
data then to its encrypted memory.



 \ /
  Last update: 2019-01-11 10:15    [W:0.129 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site