lkml.org 
[lkml]   [2016]   [Oct]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRE: [PATCH v4 13/18] x86/intel_rdt: Add mkdir to resctrl file system
On Mon, 17 Oct 2016, Luck, Tony wrote:

> > How so? CLOSID 9 is using CLOSID 1 L2 settings. Are we just keeping the L2
> > setting of CLOSID 1 around and do not reset it to default?
>
> No. When CLOSID 9 arrives at the L2 h/w, it doesn't just take the bits it
> likes an discard the high bits to map to L2_CBM[1]. It just turns into
> into the maximum allowed value for an L2 CBM.

So all CLOSIDs >= 8 will use all valid CBM bits for L2? That's even more
insane as this breaks any L2 partitioning which is set up by CLOSIDs < 8.

So effectively CLOSIDs >= 8 are useless in the L3=16 and L2=8 case.

Thanks,

tglx

\
 
 \ /
  Last update: 2016-10-18 01:28    [W:1.440 / U:0.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site