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freebsd/sys/ia64
Alan Cox 6031c68de4 The page flag PGA_WRITEABLE is set and cleared exclusively by the pmap
layer, but it is read directly by the MI VM layer.  This change introduces
pmap_page_is_write_mapped() in order to completely encapsulate all direct
access to PGA_WRITEABLE in the pmap layer.

Aesthetics aside, I am making this change because amd64 will likely begin
using an alternative method to track write mappings, and having
pmap_page_is_write_mapped() in place allows me to make such a change
without further modification to the MI VM layer.

As an added bonus, tidy up some nearby comments concerning page flags.

Reviewed by:	kib
MFC after:	6 weeks
2012-06-16 18:56:19 +00:00
..
acpica Improve style(9) in the previous commit. 2012-06-01 17:07:52 +00:00
compile
conf Remove pty(4) from our kernel configurations. 2012-03-21 08:38:42 +00:00
disasm
ia32 Copy i386 specialreg.h to x86 and merge with amd64 specialreg.h. Replace 2012-03-19 21:34:11 +00:00
ia64 pmap_alloc_vhpt() doesn't need the pages that it allocates to be mapped 2012-06-01 03:56:12 +00:00
include The page flag PGA_WRITEABLE is set and cleared exclusively by the pmap 2012-06-16 18:56:19 +00:00
isa Retire isa_setup_intr() and isa_teardown_intr() and use the generic bus 2011-05-06 13:48:53 +00:00
pci