Re: [PATCH 0/2] ALSA: memalloc: Fix for Xen PV and non-IOMMU systems

["Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>]

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On Wed, Jan 25, 2023 at 04:29:19PM +0100, Takashi Iwai wrote:
> On Tue, 24 Jan 2023 10:27:42 +0100,
> Takashi Iwai wrote:
> > 
> > Hi,
> > 
> > this is a patch series to address the recent regression on Xen PV (and
> > possibly non-IOMMU) systems about the SG-buffer memory allocation.
> > We switched to use dma_alloc_noncontiguous() as hoped it handling
> > everything right, but it turned out that this doesn't work always.
> > So this is one step back, use the explicit SG-buffer with
> > dma_alloc_coherent() calls, but in a bit more optimized ways, and also
> > applying only for those systems.
> 
> It seems that the second patch causes a problem; at least I see casual
> Oopses on my system after using the patch.  Let's scratch.
> 
> I'll resubmit the fix.  Marek, could you try that later and report
> back if it still works and doesn't break things again?

Sure, just cc me.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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