mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
nvme-pci: don't limit DMA segement size
NVMe uses PRPs (or optionally unlimited SGLs) for data transfers and has no specific limit for a single DMA segement. Limiting the size will cause problems because the block layer assumes PRP-ish devices using a virt boundary mask don't have a segment limit. And while this is true, we also really need to tell the DMA mapping layer about it, otherwise dma-debug will trip over it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
98d669b491
commit
a48bc52001
1 changed files with 6 additions and 0 deletions
|
@ -2513,6 +2513,12 @@ static void nvme_reset_work(struct work_struct *work)
|
|||
*/
|
||||
dev->ctrl.max_hw_sectors = NVME_MAX_KB_SZ << 1;
|
||||
dev->ctrl.max_segments = NVME_MAX_SEGS;
|
||||
|
||||
/*
|
||||
* Don't limit the IOMMU merged segment size.
|
||||
*/
|
||||
dma_set_max_seg_size(dev->dev, 0xffffffff);
|
||||
|
||||
mutex_unlock(&dev->shutdown_lock);
|
||||
|
||||
/*
|
||||
|
|
Loading…
Reference in a new issue