Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On Wed, 2019-05-29 at 09:50 +0200, Christian König wrote: > Am 28.05.19 um 19:23 schrieb Lendacky, Thomas: > > On 5/28/19 12:05 PM, Thomas Hellstrom wrote: > > > On 5/28/19 7:00 PM, Lendacky, Thomas wrote: > > > > On 5/28/19 11:32 AM, Koenig, Christian wrote: > > > > > Am 28.05.19 um 18:27 schrieb

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Am 28.05.19 um 19:23 schrieb Lendacky, Thomas: On 5/28/19 12:05 PM, Thomas Hellstrom wrote: On 5/28/19 7:00 PM, Lendacky, Thomas wrote: On 5/28/19 11:32 AM, Koenig, Christian wrote: Am 28.05.19 um 18:27 schrieb Thomas Hellstrom: On Tue, 2019-05-28 at 15:50 +, Lendacky, Thomas wrote: On 5

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/28/19 12:05 PM, Thomas Hellstrom wrote: > On 5/28/19 7:00 PM, Lendacky, Thomas wrote: >> On 5/28/19 11:32 AM, Koenig, Christian wrote: >>> Am 28.05.19 um 18:27 schrieb Thomas Hellstrom: On Tue, 2019-05-28 at 15:50 +, Lendacky, Thomas wrote: > On 5/28/19 10:17 AM, Koenig, Christian

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/28/19 7:00 PM, Lendacky, Thomas wrote: On 5/28/19 11:32 AM, Koenig, Christian wrote: Am 28.05.19 um 18:27 schrieb Thomas Hellstrom: On Tue, 2019-05-28 at 15:50 +, Lendacky, Thomas wrote: On 5/28/19 10:17 AM, Koenig, Christian wrote: Hi Thomas, Am 28.05.19 um 17:11 schrieb Thomas Hel

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/28/19 11:32 AM, Koenig, Christian wrote: > Am 28.05.19 um 18:27 schrieb Thomas Hellstrom: >> On Tue, 2019-05-28 at 15:50 +, Lendacky, Thomas wrote: >>> On 5/28/19 10:17 AM, Koenig, Christian wrote: Hi Thomas, Am 28.05.19 um 17:11 schrieb Thomas Hellstrom: > Hi, Tom,

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Am 28.05.19 um 18:27 schrieb Thomas Hellstrom: > On Tue, 2019-05-28 at 15:50 +, Lendacky, Thomas wrote: >> On 5/28/19 10:17 AM, Koenig, Christian wrote: >>> Hi Thomas, >>> >>> Am 28.05.19 um 17:11 schrieb Thomas Hellstrom: Hi, Tom, Thanks for the reply. The question is not graphi

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On Tue, 2019-05-28 at 15:50 +, Lendacky, Thomas wrote: > On 5/28/19 10:17 AM, Koenig, Christian wrote: > > Hi Thomas, > > > > Am 28.05.19 um 17:11 schrieb Thomas Hellstrom: > > > Hi, Tom, > > > > > > Thanks for the reply. The question is not graphics specific, but > > > lies > > > in your an

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/28/19 10:17 AM, Koenig, Christian wrote: > Hi Thomas, > > Am 28.05.19 um 17:11 schrieb Thomas Hellstrom: >> Hi, Tom, >> >> Thanks for the reply. The question is not graphics specific, but lies >> in your answer further below: >> >> On 5/28/19 4:48 PM, Lendacky, Thomas wrote: >>> On 5/28/19 2

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Hi Thomas, Am 28.05.19 um 17:11 schrieb Thomas Hellstrom: > Hi, Tom, > > Thanks for the reply. The question is not graphics specific, but lies > in your answer further below: > > On 5/28/19 4:48 PM, Lendacky, Thomas wrote: >> On 5/28/19 2:31 AM, Thomas Hellstrom wrote: >> [SNIP] >> As for kernel

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Hi, Tom, Thanks for the reply. The question is not graphics specific, but lies in your answer further below: On 5/28/19 4:48 PM, Lendacky, Thomas wrote: On 5/28/19 2:31 AM, Thomas Hellstrom wrote: Hi, Tom, Could you shed some light on this? I don't have a lot of GPU knowledge, so let me st

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Am 28.05.19 um 16:48 schrieb Lendacky, Thomas: On 5/28/19 2:31 AM, Thomas Hellstrom wrote: Hi, Tom, Could you shed some light on this? I don't have a lot of GPU knowledge, so let me start with an overview of how everything should work and see if that answers the questions being asked. First,

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/28/19 2:31 AM, Thomas Hellstrom wrote: > Hi, Tom, > > Could you shed some light on this? I don't have a lot of GPU knowledge, so let me start with an overview of how everything should work and see if that answers the questions being asked. First, SME: The encryption bit is bit-47 of a physi

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Hi, Tom, Could you shed some light on this? Thanks, Thomas On 5/24/19 5:08 PM, Alex Deucher wrote: + Tom He's been looking into SEV as well. On Fri, May 24, 2019 at 8:30 AM Thomas Hellstrom wrote: On 5/24/19 2:03 PM, Koenig, Christian wrote: Am 24.05.19 um 12:37 schrieb Thomas Hellstrom:

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

+ Tom He's been looking into SEV as well. On Fri, May 24, 2019 at 8:30 AM Thomas Hellstrom wrote: > > On 5/24/19 2:03 PM, Koenig, Christian wrote: > > Am 24.05.19 um 12:37 schrieb Thomas Hellstrom: > >> [CAUTION: External Email] > >> > >> On 5/24/19 12:18 PM, Koenig, Christian wrote: > >>> Am 24

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/24/19 2:03 PM, Koenig, Christian wrote: Am 24.05.19 um 12:37 schrieb Thomas Hellstrom: [CAUTION: External Email] On 5/24/19 12:18 PM, Koenig, Christian wrote: Am 24.05.19 um 11:55 schrieb Thomas Hellstrom: [CAUTION: External Email] On 5/24/19 11:11 AM, Thomas Hellstrom wrote: Hi, Chris

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Am 24.05.19 um 12:37 schrieb Thomas Hellstrom: > [CAUTION: External Email] > > On 5/24/19 12:18 PM, Koenig, Christian wrote: >> Am 24.05.19 um 11:55 schrieb Thomas Hellstrom: >>> [CAUTION: External Email] >>> >>> On 5/24/19 11:11 AM, Thomas Hellstrom wrote: Hi, Christian, On 5/24/19

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/24/19 12:18 PM, Koenig, Christian wrote: Am 24.05.19 um 11:55 schrieb Thomas Hellstrom: [CAUTION: External Email] On 5/24/19 11:11 AM, Thomas Hellstrom wrote: Hi, Christian, On 5/24/19 10:37 AM, Koenig, Christian wrote: Am 24.05.19 um 10:11 schrieb Thomas Hellström (VMware): [CAUTION:

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Am 24.05.19 um 11:55 schrieb Thomas Hellstrom: > [CAUTION: External Email] > > On 5/24/19 11:11 AM, Thomas Hellstrom wrote: >> Hi, Christian, >> >> On 5/24/19 10:37 AM, Koenig, Christian wrote: >>> Am 24.05.19 um 10:11 schrieb Thomas Hellström (VMware): [CAUTION: External Email] From

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

On 5/24/19 11:11 AM, Thomas Hellstrom wrote: Hi, Christian, On 5/24/19 10:37 AM, Koenig, Christian wrote: Am 24.05.19 um 10:11 schrieb Thomas Hellström (VMware): [CAUTION: External Email] From: Thomas Hellstrom With SEV encryption, all DMA memory must be marked decrypted (AKA "shared") for

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Hi, Christian, On 5/24/19 10:37 AM, Koenig, Christian wrote: Am 24.05.19 um 10:11 schrieb Thomas Hellström (VMware): [CAUTION: External Email] From: Thomas Hellstrom With SEV encryption, all DMA memory must be marked decrypted (AKA "shared") for devices to be able to read it. In the future w

Re: [RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

Am 24.05.19 um 10:11 schrieb Thomas Hellström (VMware): > [CAUTION: External Email] > > From: Thomas Hellstrom > > With SEV encryption, all DMA memory must be marked decrypted > (AKA "shared") for devices to be able to read it. In the future we might > want to be able to switch normal (encrypted)

[RFC PATCH] drm/ttm, drm/vmwgfx: Have TTM support AMD SEV encryption

From: Thomas Hellstrom With SEV encryption, all DMA memory must be marked decrypted (AKA "shared") for devices to be able to read it. In the future we might want to be able to switch normal (encrypted) memory to decrypted in exactly the same way as we handle caching states, and that would require