PR/57833 CVS commit: src/sys/external/bsd/drm2/dist/drm/i915/gem

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

The following reply was made to PR kern/57833; it has been noted by GNATS.

From: "Taylor R Campbell" <riastradh%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/57833 CVS commit: src/sys/external/bsd/drm2/dist/drm/i915/gem
Date: Fri, 19 Jan 2024 22:23:19 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Fri Jan 19 22:23:19 UTC 2024
 
 Modified Files:
 	src/sys/external/bsd/drm2/dist/drm/i915/gem: i915_gem_region.c
 
 Log Message:
 i915_gem_region: Fill sg_pgs, with size/PAGE_SIZE entries.
 
 Use sg_alloc_table_from_bus_dmamem to do this.
 
 i915_gem_mman.c vm_fault_cpu and i915_gem_object_release_mmap_offset
 both rely on sg_pgs to be a page array, so using something else like
 size >> ilog2(mem->mm.chunk_size) entries doesn't work.  And they
 rely on the sg_pgs entries to be initialized, which we weren't doing
 before, and which sg_alloc_table_from_bus_dmamem does for us.
 
 Related to PR kern/57833.
 
 XXX pullup-10
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.5 -r1.6 \
     src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_region.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.