freebsd-skq/sys/ia64
kib 798eea1614 Fix a leak of the wired pages when unwiring of the PROT_NONE-mapped
wired region.  Rework the handling of unwire to do the it in batch,
both at pmap and object level.

All commits below are by alc.

MFC r268327:
Introduce pmap_unwire().

MFC r268591:
Implement pmap_unwire() for powerpc.

MFC r268776:
Implement pmap_unwire() for arm.

MFC r268806:
pmap_unwire(9) man page.

MFC r269134:
When unwiring a region of an address space, do not assume that the
underlying physical pages are mapped by the pmap.  This fixes a leak
of the wired pages on the unwiring of the region mapped with no access
allowed.

MFC r269339:
In the implementation of the new function pmap_unwire(), the call to
MOEA64_PVO_TO_PTE() must be performed before any changes are made to the
PVO. Otherwise, MOEA64_PVO_TO_PTE() will panic.

MFC r269365:
Correct a long-standing problem in moea{,64}_pvo_enter() that was revealed
by the combination of r268591 and r269134: When we attempt to add the
wired attribute to an existing mapping, moea{,64}_pvo_enter() do nothing.
(They only set the wired attribute on newly created mappings.)

MFC r269433:
Handle wiring failures in vm_map_wire() with the new functions
pmap_unwire() and vm_object_unwire().
Retire vm_fault_{un,}wire(), since they are no longer used.

MFC r269438:
Rewrite a loop in vm_map_wire() so that gcc doesn't think that the variable
"rv" is uninitialized.

MFC r269485:
Retire pmap_change_wiring().

Reviewed by:	alc
2014-09-01 07:58:15 +00:00
..
acpica MFC r263815, r263872: 2014-08-21 19:51:07 +00:00
conf MFC r263749,267146: 2014-07-17 22:31:46 +00:00
disasm
ia32 Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
ia64 Fix a leak of the wired pages when unwiring of the PROT_NONE-mapped 2014-09-01 07:58:15 +00:00
include MFC r263815, r263872: 2014-08-21 19:51:07 +00:00
isa MFC 2011-05-06 22:45:33 +00:00
pci In pci_cfgregread() and pci_cfgregwrite(), multiplex the domain and 2013-07-23 03:03:17 +00:00