lkml.org 
[lkml]   [2020]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH 00/62] Linux as SEV-ES Guest Support
On Tue, Feb 11, 2020 at 03:50:08PM +0100, Peter Zijlstra wrote:

> Oh gawd; so instead of improving the whole NMI situation, AMD went and
> made it worse still ?!?

Well, depends on how you want to see it. Under SEV-ES an IRET will not
re-open the NMI window, but the guest has to tell the hypervisor
explicitly when it is ready to receive new NMIs via the NMI_COMPLETE
message. NMIs stay blocked even when an exception happens in the
handler, so this could also be seen as a (slight) improvement.

Regards,

Joerg

\
 
 \ /
  Last update: 2020-02-11 16:44    [W:0.609 / U:1.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site