[PATCH] dma/idxd: add support for multi-process when using VFIO

Thomas Monjalon thomas at monjalon.net
Wed May 24 21:14:52 CEST 2023


17/05/2023 12:17, Burakov, Anatoly:
> On 5/15/2023 5:29 PM, Bruce Richardson wrote:
> > When using vfio-pci/uio for hardware access, we need to avoid
> > reinitializing the hardware when mapping from a secondary process.
> > Instead, just configure the function pointers and reuse the data
> > mappings from the primary process.
> > 
> > With the code change, update driver doc with the information that
> > vfio-pci can be used for multi-process support, and explicitly state the
> > limitation on multi-process support being unavailable when using idxd
> > kernel driver.
> > 
> > Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
> > ---
> 
>  From multiprocess perspective,
> 
> Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

Applied, thanks.





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