freebsd-skq/sys/vm
royger b86acea372 vm_phys: improve robustness of fictitious ranges
With the current implementation of managed fictitious ranges when
also using VM_PHYSSEG_DENSE, a user could try to register a
fictitious range that starts inside of vm_page_array, but then
overrruns it (because the end of the fictitious range is greater than
vm_page_array_size + first_page). This would result in PHYS_TO_VM_PAGE
returning unallocated pages from past the end of vm_page_array. The
same could happen if a user tried to register a segment that starts
outside of vm_page_array but ends inside of it.

In order to fix this, allow vm_phys_fictitious_{reg/unreg}_range to
use a set of pages from vm_page_array, and allocate the rest.

Sponsored by: Citrix Systems R&D
Reviewed by: kib, alc

vm/vm_phys.c:
 - Allow registering/unregistering fictitious ranges that overrun
   vm_page_array.
2014-08-05 10:29:01 +00:00
..
_vm_radix.h
default_pager.c
device_pager.c Initialize paddr to handle the case of zero size. 2014-03-12 16:38:55 +00:00
memguard.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
memguard.h
phys_pager.c
pmap.h Retire pmap_change_wiring(). We have never used it to wire virtual pages. 2014-08-03 20:40:51 +00:00
redzone.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
redzone.h
sg_pager.c
swap_pager.c Add sysctl OIDs showing the actual size and capacity of the swap zone. 2014-04-26 12:18:17 +00:00
swap_pager.h
uma_core.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
uma_dbg.c
uma_dbg.h
uma_int.h Implement soft pressure on UMA cache bucket sizes. 2013-11-19 10:05:53 +00:00
uma.h Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized. 2014-02-10 19:59:46 +00:00
vm_extern.h Handle wiring failures in vm_map_wire() with the new functions 2014-08-02 16:10:24 +00:00
vm_fault.c Handle wiring failures in vm_map_wire() with the new functions 2014-08-02 16:10:24 +00:00
vm_glue.c - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_init.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_kern.c - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_kern.h
vm_map.c Rewrite a loop in vm_map_wire() so that gcc doesn't think that the variable 2014-08-02 17:58:20 +00:00
vm_map.h Add MAP_EXCL flag for mmap(2). It should be combined with MAP_FIXED, 2014-06-19 05:00:39 +00:00
vm_meter.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_mmap.c Remove ia64. 2014-07-07 00:27:09 +00:00
vm_object.c When unwiring a region of an address space, do not assume that the 2014-07-26 18:10:18 +00:00
vm_object.h When unwiring a region of an address space, do not assume that the 2014-07-26 18:10:18 +00:00
vm_page.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_page.h - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_pageout.c Remove ia64. 2014-07-07 00:27:09 +00:00
vm_pageout.h
vm_pager.c
vm_pager.h
vm_param.h Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_phys.c vm_phys: improve robustness of fictitious ranges 2014-08-05 10:29:01 +00:00
vm_phys.h Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_radix.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_radix.h Eliminate a redundant parameter to vm_radix_replace(). 2013-12-08 20:07:02 +00:00
vm_reserv.c Correct a bug in the management of the population map on big-endian 2014-06-11 16:11:12 +00:00
vm_reserv.h
vm_unix.c Remove ia64. 2014-07-07 00:27:09 +00:00
vm_zeroidle.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm.h
vnode_pager.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vnode_pager.h