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case. Do not arbitarily disallow sizes with the high bit set, they
are unsigned. With lotsa help from miod@, test by danh@
ok miod@ millert@ tedu@
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with a static page size on platforms where it may vary.
ok deraadt@ millert@ tdeval@
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scattering ld.so and libraries around, although all mmaps will also
have some jitter too. better version after some discussion with drahn
testing/ok deraadt henning marcm otto pb
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from Patrick Latifi <patrick.l@hermes.usherb.ca>
ok jason@ tedu@
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argument. old cred only calls user suser_ucred. this will allow future
work to more flexibly implement the idea of a root process. looks like
something i saw in freebsd, but a little different.
use of suser_ucred vs suser in file system code should be looked at again,
for the moment semantics remain unchanged.
review and input from art@ testing and further review miod@
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I've skipped the GNU stuff for now. From Patrick Latifi.
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undefined flags are now rejected instead of silently ignored. makes
"unintentional" mprotect calls a touch harder.
ok art@ deraadt@ jason@
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when set, uvm will not attempt to avoid a heap address, if requested.
from todd vierling, via
http://marc.theaimsgroup.com/?l=netbsd-tech-kern&m=105612525808607&w=1
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source upgrade from a system that used it anyway.
ok art deraadt drahn
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Close PR 3262
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needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built, booted, and 'make includes' before building
ld.so with this change.
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needs the prot/flags info and passing the addresses via arg/return allows
it to be traced via ktrace better than an in/out paramter.
This adds a new mquery syscall and renames the old one to omquery.
New kernel _MUST_ be built and installed before building ld.so with this change.
ok millert@ tedu@
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The first one is an mquery(2) syscall. It's for asking the VM system
about where to map things. It will be used by ld.so, read the man page
for details.
The second change is related and is a centralization of uvm_map hint
that all callers of uvm_map calculated. This will allow us to adjust
this hint on architectures that have segments for non-exec mappings.
deraadt@ drahn@ ok.
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+checked by regress.
millert@, art@ ok.
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remaining instances of them with appropriate copy(9) usage.
ok art@, tested on all arches unless my memory is non-ECC
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uvm_unmap, uvm_deallocate and a few other functions.
Simplifies some code and reduces diff to the UBC branch.
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machines or some configurations or in some phase of the moon (we actually
don't know when or why) files disappeared. Since we've not been able to
track down the problem in two weeks intense debugging and we need -current
to be stable, back out everything to a state it had before UBC.
We apologise for the inconvenience.
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Today we add a pmap argument to pmap_update() and allocate map entries for
kernel_map from kmem_map instead of using the static entries. This should
get rid of MAX_KMAPENT panics. Also some uvm_loan problems are fixed.
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Contains also support for page coloring.
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This time we're getting rid of KERN_* and VM_PAGER_* error codes and
use errnos instead.
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code is written mostly by Chuck Silvers <chuq@chuq.com>/<chs@netbsd.org>.
Tested for the past few weeks by many developers, should be in a pretty stable
state, but will require optimizations and additional cleanups.
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for the virtual address.
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The only thing left in vm/ are just dumb wrappers.
vm/vm.h includes uvm/uvm_extern.h
vm/pmap.h includes uvm/uvm_pmap.h
vm/vm_page.h includes uvm/uvm_page.h
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any anyone. Every caller of falloc matures the fd when it's usable.
- Since every lookup in the fd table must now check this flag and all of
them do the same thing, move all the necessary checks into a function -
fd_getfile.
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Including support for zeroing pages in the idle loop (not enabled yet).
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into objects.
Gives the possibilty to mmap beyond the size of vaddr_t.
From NetBSD.
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and arbitrary flags into one argument.
One new flag is PMAP_CANFAIL that tells pmap_enter that it can fail if there
are not enough resources to satisfy the request. If this flag is not passed,
pmap_enter should panic as it should have done before this change (XXX - many
pmaps are still not doing that).
Only i386 and alpha implement CANFAIL for now.
Includes uvm updates from NetBSD.
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- thread_sleep_msg() -> uvm_sleep()
- initialize reference count lock in uvm_anon_{init,add}()
- add uao_flush()
- replace boolean 'islocked' with 'lockflags'
- in uvm_fault() change FALSE to TRUE to in 'wide' fault handling
- get rid of uvm_km_get()
- various bug fixes
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boolean_t pmap_extract(struct pmap *, vaddr_t, paddr_t *).
Matches NetBSD. Tested by various people on various platforms.
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The highlight is some more advices to madvise(2).
o MADV_DONTNEED will deactive the pages in the given range giving a quicker
reuse.
o MADV_FREE will garbage-collect the pages and swap resources causing the
next fault to either page in new pages from backing store (mapped vnode)
or allocate new zero-fill pages (anonymous mapping).
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From NetBSD.
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We might want to use them on types that are bigger than vaddr_t.
Fix all callers that pass pointers without casts.
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Implements mincore(2), mlockall(2) and munlockall(2). mlockall and munlockall
are disabled for the moment.
The rest is mostly cosmetic.
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