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270920 |
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01-Sep-2014 |
kib |
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
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#
270439 |
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24-Aug-2014 |
kib |
Merge the changes to pmap_enter(9) for sleep-less operation (requested by flag). The ia64 pmap.c changes are direct commit, since ia64 is removed on head.
MFC r269368 (by alc): Retire PVO_EXECUTABLE.
MFC r269728: Change pmap_enter(9) interface to take flags parameter and superpage mapping size (currently unused).
MFC r269759 (by alc): Update the text of a KASSERT() to reflect the changes in r269728.
MFC r269822 (by alc): Change {_,}pmap_allocpte() so that they look for the flag PMAP_ENTER_NOSLEEP instead of M_NOWAIT/M_WAITOK when deciding whether to sleep on page table page allocation.
MFC r270151 (by alc): Replace KASSERT that no PV list locks are held with a conditional unlock.
Reviewed by: alc Approved by: re (gjb) Sponsored by: The FreeBSD Foundation
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#
270920 |
|
01-Sep-2014 |
kib |
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
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#
270439 |
|
24-Aug-2014 |
kib |
Merge the changes to pmap_enter(9) for sleep-less operation (requested by flag). The ia64 pmap.c changes are direct commit, since ia64 is removed on head.
MFC r269368 (by alc): Retire PVO_EXECUTABLE.
MFC r269728: Change pmap_enter(9) interface to take flags parameter and superpage mapping size (currently unused).
MFC r269759 (by alc): Update the text of a KASSERT() to reflect the changes in r269728.
MFC r269822 (by alc): Change {_,}pmap_allocpte() so that they look for the flag PMAP_ENTER_NOSLEEP instead of M_NOWAIT/M_WAITOK when deciding whether to sleep on page table page allocation.
MFC r270151 (by alc): Replace KASSERT that no PV list locks are held with a conditional unlock.
Reviewed by: alc Approved by: re (gjb) Sponsored by: The FreeBSD Foundation
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