On Mon, Feb 01, 2021 at 10:30:14AM -0800, Jianxiong Gao wrote: > NVMe driver and other applications may depend on the data offset > to operate correctly. Currently when unaligned data is mapped via > SWIOTLB, the data is mapped as slab aligned with the SWIOTLB. This > patch adds an option to make sure the mapped data preserves its > offset of the orginal addrss. > > Without the patch when creating xfs formatted disk on NVMe backends, > with swiotlb=force in kernel boot option, creates the following error: > meta-data=/dev/nvme2n1 isize=512 agcount=4, agsize=131072 blks > = sectsz=512 attr=2, projid32bit=1 > = crc=1 finobt=1, sparse=0, rmapbt=0, refl > ink=0 > data = bsize=4096 blocks=524288, imaxpct=25 > = sunit=0 swidth=0 blks > naming =version 2 bsize=4096 ascii-ci=0 ftype=1 > log =internal log bsize=4096 blocks=2560, version=2 > = sectsz=512 sunit=0 blks, lazy-count=1 > realtime =none extsz=4096 blocks=0, rtextents=0 > mkfs.xfs: pwrite failed: Input/output error > > Jianxiong Gao (3): > Adding page_offset_mask to device_dma_parameters > Add swiotlb offset preserving mapping when > dma_dma_parameters->page_offset_mask is non zero. > Adding device_dma_parameters->offset_preserve_mask to NVMe driver. > > drivers/nvme/host/pci.c | 4 ++++ > include/linux/device.h | 1 + > include/linux/dma-mapping.h | 17 +++++++++++++++++ > kernel/dma/swiotlb.c | 16 +++++++++++++++- > 4 files changed, 37 insertions(+), 1 deletion(-) > > -- > 2.27.0 >
You forgot to mention somewhere, what changed from v1 to v2 :(
