lkml.org 
[lkml]   [2018]   [Mar]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] KVM: X86: Fix the decoding of segment overrides in 64bit mode
From
Date
On 22/03/2018 12:04, Andrew Cooper wrote:
> We've got a Force Emulation Prefix (ud2a; .ascii "xen") for doing
> magic.  Originally, this was used for PV guests to explicitly request an
> emulated CPUID, but I extended it to HVM guests for "emulate the next
> instruction", after we had some guest user => guest kernel privilege
> escalations because of incorrect emulation.

Wanpeng, why don't you add it behind a new kvm module parameter? :)

Paolo

\
 
 \ /
  Last update: 2018-03-22 13:38    [W:0.449 / U:0.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site