[MODERATED] Re: [PATCH 2/3] V5 more sampling fun 2

On Mon, Apr 06, 2020 at 08:37:56PM +0200, speck for Greg KH wrote:
> On Mon, Apr 06, 2020 at 11:34:17AM -0700, speck for Kees Cook wrote:
> > > +			By default, this issue is mitigated by
> > > +			microcode.  However, the microcode fix can cause
> > > +			the RDRAND and RDSEED instructions to become
> > > +			much slower.  Among other effects, this will
> > > +			result in reduced throughput from /dev/urandom.
> > 
> > This is this true about /dev/urandom? I thought the RDRAND dependency
> > had been removed?
> 
> That dependancy will be removed in 5.7-rc1 and I will be backporting
> that to the stable kernels "soon".
>
FWIW I'm back porting Thomas' X86_MATCH clean up series to the LTS kernels
today/tomorow.  Let me know if someone has beaten me to it.

I'm hoping to take it back to 4.4 ATM I have v5.6.y, v5.5.y, and v5.4.y done so
far.

--mark