freebsd-nq/sys/i386
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 - Fix resumectx() prototypes to reflect reality. 2012-06-13 21:03:01 +00:00
bios Do not invoke resume event handlers if suspend was successful. 2011-04-19 16:30:17 +00:00
compile
conf Oops - use the actual 11n enable option. 2012-06-15 15:32:16 +00:00
i386 - Fix resumectx() prototypes to reflect reality. 2012-06-13 21:03:01 +00:00
ibcs2 Fix misuse of the kernel map in miscellaneous image activators. 2012-02-17 23:47:16 +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 Add support for the extended FPU states on amd64, both for native 2012-01-21 17:45:27 +00:00
linux - >500 static DTrace probes for the linuxulator 2012-05-05 19:42:38 +00:00
pci Move {amd64,i386}/pci/pci_bus.c and {amd64,i386}/include/pci_cfgreg.h to 2011-06-22 21:04:13 +00:00
svr4 Change some movl's to mov's. Newer GAS no longer accept 'movl' instructions 2009-01-31 11:37:21 +00:00
xbox Move the legacy(4) driver to x86. 2012-03-30 19:10:14 +00:00
xen Various small changes to PV entry management: 2012-06-04 03:51:08 +00:00
Makefile Delete duplicate tags entry I introduced in -r223901. 2011-07-15 17:27:26 +00:00