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mirror of https://git.FreeBSD.org/src.git synced 2024-12-20 11:11:24 +00:00
freebsd/sys/vm
Peter Wemm 3f25cbddc2 Move the initialization and teardown of pmaps to the vmspace zone's
init and fini handlers.  Our vm system removes all userland mappings at
exit prior to calling pmap_release.  It just so happens that we might
as well reuse the pmap for the next process since the userland slate
has already been wiped clean.

However.  There is a functional benefit to this as well.  For platforms
that share userland and kernel context in the same pmap, it means that
the kernel portion of a pmap remains valid after the vmspace has been
freed (process exit) and while it is in uma's cache.  This is significant
for i386 SMP systems with kernel context borrowing because it avoids
a LOT of IPIs from the pmap_lazyfix() cleanup in the usual case.

Tested on:  amd64, i386, sparc64, alpha
Glanced at by:  alc
2004-07-21 00:29:21 +00:00
..
default_pager.c Access the swap_pagers' ->putpages() through swappagerops instead 2003-08-06 12:05:48 +00:00
device_pager.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
phys_pager.c Zero the physical page only if it is invalid and not prezeroed. 2004-04-25 07:58:59 +00:00
pmap.h - pmap_kenter_temporary() is unused by machine-independent code. Therefore, 2004-04-10 22:41:46 +00:00
swap_pager.c Properly brucify a string by outdenting it. 2004-07-06 02:27:30 +00:00
swap_pager.h Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
uma_core.c Since breakage of malloc(9)/uma_zalloc(9) is totally non-optional in 2004-07-19 15:05:24 +00:00
uma_dbg.c Bring in mbuma to replace mballoc. 2004-05-31 21:46:06 +00:00
uma_dbg.h
uma_int.h Bring in mbuma to replace mballoc. 2004-05-31 21:46:06 +00:00
uma.h Fix a comment above uma_zsecond_create(), describing its arguments. 2004-06-01 01:36:26 +00:00
vm_contig.c Remove extraneous locks on the VM free page queue mutex; it is not 2004-07-19 23:29:36 +00:00
vm_extern.h To date, unwiring a fictitious page has produced a panic. The reason 2004-05-22 04:53:51 +00:00
vm_fault.c To date, unwiring a fictitious page has produced a panic. The reason 2004-05-22 04:53:51 +00:00
vm_glue.c - Don't use a variable to point to the user area that we only use once. 2004-07-02 03:45:07 +00:00
vm_init.c The demise of vm_pager_map_page() in revision 1.93 of vm/vm_pager.c permits 2004-04-08 19:08:49 +00:00
vm_kern.c Bring in mbuma to replace mballoc. 2004-05-31 21:46:06 +00:00
vm_kern.h Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
vm_map.c Move the initialization and teardown of pmaps to the vmspace zone's 2004-07-21 00:29:21 +00:00
vm_map.h Micro-optimize vmspace for 64-bit architectures: Colocate vm_refcnt and 2004-07-06 17:35:10 +00:00
vm_meter.c Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
vm_mmap.c Deorbit COMPAT_SUNOS. 2004-06-11 11:16:26 +00:00
vm_object.c Initialize result->backing_object_offset before linking result onto the list of 2004-06-28 20:26:35 +00:00
vm_object.h Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
vm_page.c - Eliminate the pte object from the pmap. Instead, page table pages are 2004-07-19 18:12:04 +00:00
vm_page.h Reimplement contigmalloc(9) with an algorithm which stands a greatly- 2004-07-19 06:21:27 +00:00
vm_pageout.c Remove the GIANT_REQUIRED preceding pmap_remove() in 2004-07-18 04:38:11 +00:00
vm_pageout.h Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
vm_pageq.c Remove references to L1 in the comments, according to Alan they are 2004-06-07 19:33:05 +00:00
vm_pager.c The demise of vm_pager_map_page() in revision 1.93 of vm/vm_pager.c permits 2004-04-08 19:08:49 +00:00
vm_pager.h The demise of vm_pager_map_page() in revision 1.93 of vm/vm_pager.c permits 2004-04-08 19:08:49 +00:00
vm_param.h Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
vm_unix.c Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
vm_zeroidle.c Implement preemption of kernel threads natively in the scheduler rather 2004-07-02 20:21:44 +00:00
vm.h Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00
vnode_pager.c Make vm_page's PG_ZERO flag immutable between the time of the page's 2004-05-06 05:03:23 +00:00
vnode_pager.h Remove advertising clause from University of California Regent's license, 2004-04-06 20:15:37 +00:00