On Tue, Oct 24, 2017 at 5:39 PM, geoff--- via iommu
wrote:
> On 2017-10-25 08:31, Alex Williamson wrote:
>>
>> On Wed, 25 Oct 2017 07:16:46 +1100
>> geoff--- via iommu wrote:
>>
>>> I have isolated it to a single change, although I do not completely
>>> understand what other implications it might
On Wed, Jun 28, 2017 at 2:53 PM, Suravee Suthikulpanit
wrote:
>
>
> On 6/29/17 00:26, Steven Walter wrote:
>>>
>>> So, I'm trying to reproduce this issue on the Ryzen system w/ the
>>> following
>>> setup:
>>>
>>> * Host kernel v4.11 (with this patch
>>> https://lkml.org/lkml/2017/6/23/295)
>>>
On Wed, Jun 28, 2017 at 9:50 PM, Thiago Padilha wrote:
> Some more data from 3DMark benchmarks:
>
> Time Spy(DirectX 12):
> - Graphics test 1:
> - npt=0: 37.65 FPS
> - npt=1: 24.22 FPS (36% drop)
> - Graphics test 2:
> - npt=0: 33.05 FPS
> - npt=1: 29.65 FPS (10% drop)
> - CPU test:
> -
On Wed, Jun 28, 2017 at 4:33 PM, Paolo Bonzini wrote:
>
>
> On 28/06/2017 21:52, Graham Neville wrote:
>> Although not related to graphics card performance, there is definitely
>> another issue with regards to running KVM nested L2 guests when npt=1.
>>
>> Thought I'd mention this in case it helps
On Fri, May 5, 2017 at 1:27 PM, Alex Williamson
wrote:
> On Wed, 3 May 2017 12:28:35 -0400
> Nick Sarnie wrote:
>
>> On Wed, May 3, 2017 at 10:37 AM, Matthias Ehrenfeuchter
>> wrote:
>> > Hi,
>> >
>> > There are a lot of messages/threads out t
On Wed, Jun 7, 2017 at 3:13 PM, Tom Lendacky wrote:
> This patch series provides support for AMD's new Secure Memory Encryption
> (SME)
> feature.
>
> SME can be used to mark individual pages of memory as encrypted through the
> page tables. A page of memory that is marked encrypted will be autom
On Wed, Jun 7, 2017 at 3:17 PM, Tom Lendacky wrote:
> The IOMMU is programmed with physical addresses for the various tables
> and buffers that are used to communicate between the device and the
> driver. When the driver allocates this memory it is encrypted. In order
> for the IOMMU to access the
On Wed, May 3, 2017 at 10:37 AM, Matthias Ehrenfeuchter wrote:
> Hi,
>
> There are a lot of messages/threads out there about bad performance while
> using AMDs Ryzen with KVM GPU passthrough. It revolves all on
> enabling/disabling npt, while enabled overall VM performance is nice but the
> GPU pe
test any
patches or provide any more information.
Thank you,
Nick Sarnie
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