Module Name:	src
Committed By:	tron
Date:		Mon Jan  8 22:31:31 UTC 2007

Modified Files:
	src/sys/arch/xen/xen [netbsd-3-1]: xencons.c

Log Message:
Pull up following revision(s) (requested by bouyer in ticket #1625):
	sys/arch/xen/xen/xencons.c: revision 1.20
- Add or change memory barrier to reflect the related operation
- In xencons_handler(), update in_cons inside the loop, otherwise,
  we would trigger the xenconscn_getc() workaround wich reset cons and prod
  to their original values, and this creates an infinite loop
Should fix the console hang reported by several users on port-xen@.


To generate a diff of this commit:
cvs rdiff -r1.4.2.6 -r1.4.2.6.2.1 src/sys/arch/xen/xen/xencons.c

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