CVS commit: [netbsd-5] src/sys/arch

["Jeff Rizzo" <riz%netbsd.org@localhost>]

Module Name:    src
Committed By:   riz
Date:           Fri Nov 19 23:19:13 UTC 2010

Modified Files:
        src/sys/arch/x86/x86 [netbsd-5]: bus_dma.c
        src/sys/arch/xen/x86 [netbsd-5]: xen_bus_dma.c

Log Message:
Pull up following revision(s) (requested by bouyer in ticket #1348):
        sys/arch/x86/x86/bus_dma.c: revision 1.54
        sys/arch/xen/x86/xen_bus_dma.c: revision 1.21
bus_dmamem_alloc() may not get a boundary smaller than size, but
it's perfectly valid for bus_dmamap_create() to do so (a contigous
transfers will then split in multiple segment).
Fix _xen_bus_dmamem_alloc_range() and _bus_dmamem_alloc_range() to
allow a boundary limit smaller than size:
- compute appropriate boundary for uvm_pglistalloc(), wich doesn't
  accept boundary < size
- also take care of boundary when deciding to start a new segment.
While there, remove useless boundary argument to _xen_alloc_contig().
Fix the boundary-related issue of PR port-amd64/42980


To generate a diff of this commit:
cvs rdiff -u -r1.45 -r1.45.6.1 src/sys/arch/x86/x86/bus_dma.c
cvs rdiff -u -r1.11.8.2 -r1.11.8.3 src/sys/arch/xen/x86/xen_bus_dma.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.