Skip to content
Commit e7fafef9 authored by Suganath Prabu S's avatar Suganath Prabu S Committed by Greg Kroah-Hartman
Browse files

scsi: mpt3sas: Force PCIe scatterlist allocations to be within same 4 GB region

[ Upstream commit d6adc251

 ]

According to the MPI specification, PCIe SGL buffers can not cross a 4 GB
boundary.

While allocating, if any buffer crosses the 4 GB boundary, then:

 - Release the already allocated memory pools; and

 - Reallocate them by changing the DMA coherent mask to 32-bit

Link: https://lore.kernel.org/r/20210305102904.7560-2-suganath-prabu.subramani@broadcom.com
Signed-off-by: default avatarSuganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: e0e0747d

 ("scsi: mpt3sas: Fix return value check of dma_get_required_mask()")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 351f2d2c
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment