lkml.org 
[lkml]   [2020]   [Nov]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [RFC][PATCH v2 11/21] x86/pti: Extend PTI user mappings
On Mon, Nov 16, 2020 at 6:49 AM Alexandre Chartre
<alexandre.chartre@oracle.com> wrote:
>
> Extend PTI user mappings so that more kernel entry code can be executed
> with the user page-table. To do so, we need to map syscall and interrupt
> entry code, per cpu offsets (__per_cpu_offset, which is used some in
> entry code), the stack canary, and the PTI stack (which is defined per
> task).

Does anything unmap the PTI stack? Mapping is easy, and unmapping
could be a pretty big mess.

--Andy

\
 
 \ /
  Last update: 2020-11-16 20:49    [W:0.580 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site