Re: [PATCH 0/3] arch/x86: Optionally flush L1D on context switch

[Josh Poimboeuf]

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