Re: [RESEND PATCH] cdx: fix driver managed dma support

[Nipun Gupta]

On 6/5/2023 8:52 PM, Greg KH wrote:
> On Mon, Jun 05, 2023 at 06:40:09PM +0530, Nipun Gupta wrote:
> > The devices on cdx could be bound to drivers with the device
> > DMA managed by kernel drivers or user-space applications.
> > As multiple devices can be placed in the same IOMMU group, the
> > DMA on these devices must either be entirely under kernel control
> > or userspace control. Fix the CDX bus driver to acknowlege the
> > driver_managed_dma flag and call the appropriate iommu APIs.
> >
> > Fixes: 2959ab247061 ("cdx: add the cdx bus driver")
> > Signed-off-by: Nipun Gupta <nipun.gupta@xxxxxxx>
> > Reported-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
> > Closes: https://lore.kernel.org/lkml/20230524134831.28dc97e2.alex.williamson@xxxxxxxxxx/
> > ---
> >
> > I have resend this patch to include fixes, closes and
> > reported by tags. We request that this fix be incorporated
> > into the 6.4 release, along with the inclusion of CDX bus
> > driver support.
>
> What do you mean by "inclusion of CDX bus driver support"?  What patches
> exactly?

Sorry for the confusion. I mean that CDX bus support would be coming up 
in 6.4 release and this patch (cdx: fix driver managed dma support) is a 
fix for the driver managed dma support in the bus. So if this patch can 
be part of 6.4 release (i.e. added in upcoming rc release/s for 6.4)?

Thanks,
Nipun

> confused,
>
> greg k-h