[dpdk-dev] [PATCH 0/4] support for write combining

Bruce Richardson bruce.richardson at intel.com
Mon Apr 30 10:58:47 CEST 2018


On Mon, Apr 30, 2018 at 10:07:07AM +0200, Rafał Kozik wrote:
> Hello Bruce,
> 
> It should work because decision about kind of mapping is made in patch
> 3 based on PMD request.
> 
> ENA use only one BAR in wc mode and two other without caching,
> therefore not making remap in igb_uio rather not spoil anything.
> 
> I added patch 1 because this variable is provided also outside the
> DPDK to Linux generic functions. I cannot test it with all drivers,
> therefore I make it configurable.
> 
> But general combination of wc and not wc PMD should work, because of patch 3.
> Also if WC is enabled by PMD (like in patch 4) not all BARs will by
> mapped, but only those which has prefetchable flag enabled.
> 
Sounds good, so in that case I've no objection to the patch.

Acked-by: Bruce Richardson <bruce.richardson at intel.com>



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