Module Name: src
Committed By: thorpej
Date: Thu Jun 24 16:41:16 UTC 2021
Modified Files:
src/sys/arch/alpha/common: sgmap_typedep.c
Log Message:
Deal with a scenario where:
- DMA map has a boundary constraint.
- Caller asks us to map a buffer that's exactly the same size as the
boundary constraint, but is not page-aligned.
This results in the size being larger than the boundary constraint after
page-rounding, and and vmem_xalloc() fires a KASSERT for it. This is
easy to trigger by running fsck.
We handle this by detecting the condition and creating an extra DMA
segment for it the spill-over.
To generate a diff of this commit:
cvs rdiff -u -r1.41 -r1.42 src/sys/arch/alpha/common/sgmap_typedep.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
