Messages in this thread | | | Date | Thu, 22 Sep 2022 07:58:15 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH] nvme-pci: Set min align mask before calculating max_hw_sectors |
| |
On Wed, Sep 21, 2022 at 11:10:58AM +0300, Sagi Grimberg wrote: > >> If swiotlb is force enabled dma_max_mapping_size ends up calling >> swiotlb_max_mapping_size which takes into account the min align >> mask for the device. >> Set the min align mask for nvme driver before calling >> dma_max_mapping_size while calculating max hw sectors. > > Does this fix a specific bug? if so it needs a fixes tag so it can > go to stable backports as well.
Hmm. Basically this is another fixlet for nvme on swiotlb, which already drove adding the max_mapping size and the align_mask, and it seems we still hadn't covered all corner cases properly. So I think it basically has been broken since day 1, but nvme on swiotlb only started becoming "interesting" with the trusted hypervisor schemes.
| |