lkml.org 
[lkml]   [2020]   [Apr]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] arch/x86: Optionally flush L1D on context switch
On Thu, Apr 02, 2020 at 05:23:58PM +1100, Balbir Singh wrote:
> Provide a mechanisn to flush the L1D cache on context switch. The goal
> is to allow tasks that are paranoid due to the recent snoop assisted data
> sampling vulnerabilites, to flush their L1D on being switched out.

Hi Balbir,

Just curious, is it really vulnerabilities, plural? I thought there was
only one: CVE-2020-0550 (Snoop-assisted L1 Data Sampling).

(There was a similar one without the "snoop": L1D Eviction Sampling, but
it's supposed to get fixed in microcode).

--
Josh

\
 
 \ /
  Last update: 2020-04-02 22:14    [W:0.069 / U:0.844 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site