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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