K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2019-01-18T13:38:56.441499Z
K 7
svn:log
V 755
x86 busdma: fix mis-use of bus_addr_t where vm_paddr_t is assumed.

Right now bus_addr_t and vm_paddr_t are always aliased to the same
underlying integer type on x86, which makes the interchange hard to
detect.  Shortly, i386 kernel would use uint64_t for vm_paddr_t to
enable automatic use of PAE paging structures if hardware allows it,
while bus_addr_t would be extended to 64bit only when PAE option is
specified.

Fix all places that were identified as using bus_addr_t while page
address was assumed.  This was performed by testing the complete PAE
merging patch on machine with > 4G of RAM enabled.

Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D18854

END