Re: Bug#989778: Regression in at least 5.10.y and mainline: Firewire audio interface fails to work properly (when booted under Xen)

[Salvatore Bonaccorso]

Hi Robin,

On Mon, Jun 14, 2021 at 02:29:08PM +0100, Robin Murphy wrote:
> On 2021-06-13 07:29, Salvatore Bonaccorso wrote:
> > A user in Debian reported the above issue, which was reproducible with
> > 5.13-rc5 and 5.10.y as packaged in Debian and found that 85a5a6875ca9
> > ("swiotlb: don't modify orig_addr in swiotlb_tbl_sync_single") that
> > introduced the issue.
> 
> Sounds like it's probably the same thing as being discussed over here:
> 
> https://lore.kernel.org/linux-iommu/2e899de2-4b69-c4b6-33a6-09fb8949d2fd@xxxxxxx/

Thanks for the pointer, it seems that now it has been fixed upstream
with 5f89468e2f06 ("swiotlb: manipulate orig_addr when tlb_addr has
offset").

Regards,
Salvatore