lkml.org 
[lkml]   [2019]   [Jun]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC 00/10] Process-local memory allocations for hiding KVM secrets
From
Date
On 6/17/19 12:38 AM, Alexander Graf wrote:
>> Yes I know, but as a benefit we could get rid of all the GSBASE
>> horrors in
>> the entry code as we could just put the percpu space into the local PGD.
>
> Would that mean that with Meltdown affected CPUs we open speculation
> attacks against the mmlocal memory from KVM user space?

Not necessarily. There would likely be a _set_ of local PGDs. We could
still have pair of PTI PGDs just like we do know, they'd just be a local
PGD pair.

\
 
 \ /
  Last update: 2019-06-17 17:55    [W:0.093 / U:1.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site