CVS commit: [netbsd-7-0] src/sys/arch/x86/x86

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

Module Name:    src
Committed By:   riz
Date:           Sun Nov  8 00:30:48 UTC 2015

Modified Files:
        src/sys/arch/x86/x86 [netbsd-7-0]: bus_dma.c

Log Message:
Pull up following revision(s) (requested by christos in ticket #1011):
        sys/arch/x86/x86/bus_dma.c: revision 1.72
        sys/arch/x86/x86/bus_dma.c: revision 1.73
        sys/arch/x86/x86/bus_dma.c: revision 1.74
- If we succeeded allocating a buffer that did not need bouncing before, but
  the buffer in the previous mapping did, clear the bounce bit. Fixes the
  ld_virtio.c bug with machines 8GB and dd if=/dev/zero of=crash bs=1g count=4.
- Allocate with M_ZERO instead of doing memset
- The panic string can take a format, use it.
- When checking for the bounce buffer boundary check addr + len < limit, not
  addr < limit.
make sure we have a cookie before we try to clear it.
fix operator precedence.


To generate a diff of this commit:
cvs rdiff -u -r1.71 -r1.71.8.1 src/sys/arch/x86/x86/bus_dma.c

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