diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-07-03 09:54:44 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-07-09 13:44:44 -0700 |
| commit | 7637de311bd2124b298a072852448b940d8a34b9 (patch) | |
| tree | af68ae72def48f858e4f961b382c8bd6b3021c48 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | bfac8e9f55cf62a000b643a0081488badbe92d96 (diff) | |
nvme-pci: limit max_hw_sectors based on the DMA max mapping size
When running a NVMe device that is attached to a addressing
challenged PCIe root port that requires bounce buffering, our
request sizes can easily overflow the swiotlb bounce buffer
size. Limit the maximum I/O size to the limit exposed by
the DMA mapping subsystem.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Atish Patra <Atish.Patra@wdc.com>
Tested-by: Atish Patra <Atish.Patra@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions