lkml.org 
[lkml]   [2018]   [Mar]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3 01/11] PCI/P2PDMA: Support peer-to-peer memory
From
Date

Stephen,

>> It would be useful if those configurations were not left behind so
>> that Linux could feasibly deploy offload code to a controller in the
>> PCI domain.
>
> Agreed. I think this would be great. Kind of like the XCOPY framework
> that was proposed a while back for SCSI devices [1] but updated to also
> include NVMe devices. That is definitely a use case we would like this
> framework to support.

I'm on my umpteenth rewrite of the block/SCSI offload code. It is not as
protocol-agnostic as I would like in the block layer facing downwards.
It has proven quite hard to reconcile token-based and EXTENDED COPY
semantics along with the desire to support stacking. But from an
application/filesystem perspective everything looks the same regardless
of the intricacies of the device. Nothing is preventing us from
supporting other protocols...

--
Martin K. Petersen Oracle Linux Engineering

\
 
 \ /
  Last update: 2018-03-15 05:02    [W:0.123 / U:4.480 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site