On Mon, Jun 17, 2024 at 11:23:12AM -0300, Fabio Estevam wrote: > This series of swiotlb patches fixes a iwlwifi regression on the > i.MX8MM IoT Gateway board running kernel 6.6. > > This was noticed when updating the kernel from 5.10 to 6.6. > > Without this series, the board cannot boot kernel 6.6 due to the storm > of alignment errors from the iwlwifi driver. > > This has been reported and discussed in the linux-wireless list: > https://lore.kernel.org/linux-wireless/CAOMZO5D2Atb=rnvmNLvu8nrsn+3L9X9NbG1bkZx_MenCCmJK2Q@xxxxxxxxxxxxxx/T/#md2b5063655dfcadf8740285573d504fd46ad0145 > > Will Deacon suggested: > > "If you want to backport that change, then I think you should probably > take the whole series: > > https://lore.kernel.org/all/20240308152829.25754-1-will@xxxxxxxxxx/ > > (and there were some follow-ups from Michael iirc; you're best off > checking the git history for kernel/dma/swiotlb.c). > > FWIW: we have this series backported to 6.6 in the android15-6.6 tree." > > >From this series, only the two patches below are not present in the > 6.6 stable tree: > > swiotlb: Enforce page alignment in swiotlb_alloc() > swiotlb: Reinstate page-alignment for mappings >= PAGE_SIZE > > While at it, also backport: > swiotlb: extend buffer pre-padding to alloc_align_mask if necessary > > as it fixes a commit that is present in 6.6. > > Petr Tesarik (1): > swiotlb: extend buffer pre-padding to alloc_align_mask if necessary > > Will Deacon (2): > swiotlb: Enforce page alignment in swiotlb_alloc() > swiotlb: Reinstate page-alignment for mappings >= PAGE_SIZE > > kernel/dma/swiotlb.c | 83 +++++++++++++++++++++++++++++++++----------- > 1 file changed, 63 insertions(+), 20 deletions(-) > All now queued up, thanks. greg k-h
