[lkml]   [2020]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 62/62] x86/sev-es: Add NMI state tracking
On Tue, Feb 11, 2020 at 5:53 AM Joerg Roedel <> wrote:
> From: Joerg Roedel <>
> Keep NMI state in SEV-ES code so the kernel can re-enable NMIs for the
> vCPU when it reaches IRET.

This patch is overcomplicated IMO. Just do the magic incantation in C
from do_nmi or from here:

* For ease of testing, unmask NMIs right away. Disabled by
* default because IRET is very expensive.

If you do the latter, you'll need to handle the case where the NMI
came from user mode.

The ideal solution is do_nmi, I think.

if (static_cpu_has(X86_BUG_AMD_FORGOT_ABOUT_NMI))

Feel free to use X86_FEATURE_SEV_ES instead :)


 \ /
  Last update: 2020-02-11 23:51    [W:0.610 / U:2.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site