lkml.org 
[lkml]   [2020]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [RFC PATCH v2] x86/arch_prctl: Add ARCH_SET_XCR0 to set XCR0 per-thread
On Tue, Apr 14, 2020 at 5:10 PM Keno Fischer <keno@juliacomputing.com> wrote:
>
> > (why would you want to record with an unusual XCR0?)
>

Hmm. I don't personally have a strong objection to allowing XCR0 to
be overridden as long as it's done reasonably sanely. And maybe
requires a sysctl to be enabled.

Would it make matters easier if tasks with nonstandard XCR0 were not
allowed to use ptrace() at all? And if ARCH_SET_XCR0 were disallowed
if the caller is tracing anyone?

\
 
 \ /
  Last update: 2020-04-16 03:09    [W:0.080 / U:1.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site