Re: [PATCH v15 06/12] swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing

From: Will Deacon
Date: Tue Jul 06 2021 - 12:57:36 EST

On Tue, Jul 06, 2021 at 10:46:07AM -0400, Konrad Rzeszutek Wilk wrote:
> On Tue, Jul 06, 2021 at 04:05:13PM +0200, Christoph Hellwig wrote:
> > On Tue, Jul 06, 2021 at 03:01:04PM +0100, Robin Murphy wrote:
> > > FWIW I was pondering the question of whether to do something along those
> > > lines or just scrap the default assignment entirely, so since I hadn't got
> > > round to saying that I've gone ahead and hacked up the alternative
> > > (similarly untested) for comparison :)
> > >
> > > TBH I'm still not sure which one I prefer...
> >
> > Claire did implement something like your suggestion originally, but
> > I don't really like it as it doesn't scale for adding multiple global
> > pools, e.g. for the 64-bit addressable one for the various encrypted
> > secure guest schemes.
> Couple of things:
> - I am not pushing to Linus the Claire's patchset until we have a
> resolution on this. I hope you all agree that is a sensible way
> forward as much as I hate doing that.

Sure, it's a pity but we could clearly use a bit more time to get these
just right and we've run out of time for 5.14.

I think the main question I have is how would you like to see patches for
5.15? i.e. as patches on top of devel/for-linus-5.14 or something else?