Commit Graph

348 Commits

Author SHA1 Message Date
sommerfe becaafeea0 defopt for options FIFO 1998-06-22 22:00:59 +00:00
cgd 651b44e211 Rework the way kernel include files are installed. In the new method,
as with user-land programs, include files are installed by each directory
in the tree that has includes to install.  (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.)  The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change.  Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.
1998-06-12 23:22:30 +00:00
tv 16a3c1c5c7 dev_pager_alloc panic workaround for arm32 - temporary. 1998-06-10 22:41:03 +00:00
kleink bb7e6a0bdd Per XSH98, const'ify the `addr' arguments to mlock() and munlock(). 1998-05-30 22:21:03 +00:00
thorpej 6626878e7b It is no longer necessary for pmap_pinit() and pmap_release() to be
pmap interface functions, as NetBSD no longer uses statically allocated
pmaps (except for the kernel pmap, which is special-cased anyhow).
1998-05-19 19:00:11 +00:00
thorpej 9556e0bd1e Nuke #if 0'd pmap_bootstrap() declaration. 1998-05-19 18:12:27 +00:00
mrg 6b11eea5b2 reject attempts to map an immutable or append-only file, shared with
write protection.  this stops data corruption where it was possible
to change the in-memory copy of an append-only file (but not the on-disk
copy).  this is documented in NetBSD security advisory 1998-003.  thanks
to darrenr, lukem, cgd, mycroft and mrg for this.
1998-05-10 12:35:58 +00:00
kleink afeaa5bb57 Use size_t to pass the length of the memory region to operate on to chgkprot(),
kernacc(), useracc(), vslock() and vsunlock(); (unsigned) ints are not
adequate on all platforms.
1998-05-09 15:04:39 +00:00
thorpej 73863dd3c9 Pass vslock() and vsunlock() a proc *, rather than implicitly operating
on curproc.
1998-04-30 06:28:57 +00:00
thorpej 2018d40811 Allocate kernel virtual address space for the U-area before allocating
the new proc structure when performing a fork.  This makes it much
easier to abort a fork operation and return an error if we run out
of KVA space.

The U-area pages are still wired down in {,u}vm_fork(), as before.
1998-04-09 00:23:38 +00:00
chuck 9eb2927bec free correct page in incomplete section of MNN, as pointed
out by Soren S. Jorvang.
1998-03-31 03:04:59 +00:00
mycroft 0652b9af01 Mark scheduler() and uvm_scheduler() as never returning. 1998-03-30 06:24:42 +00:00
kleink 6618749e5a Per XPG, if the file descriptor argument to mmap() refers to a file whose
type is not supported (neither VREG nor VCHR, or not a vnode at all), fail
with ENODEV instead of EINVAL.
1998-03-28 16:58:04 +00:00
thorpej 6e89972d82 Split vmspace_alloc() into vmspace_alloc() and vmspace_init(). The latter
can be used for initializing a pre-allocated vmspace.
1998-03-27 01:46:20 +00:00
chuck 3d3a01805a correctly count ru_majflt. the fix pulled in from pr#1397 is incorrect.
calling vm_pager_get() doesn't count as a "majflt" unless the pager
returns VM_PAGER_OK.  when walking an object chain we can get VM_PAGER_FAIL
(indicating that the requested data does not reside in this object
and we must continue to walk the chain) -- we don't want to count this
as a majflt.

i also added code to count ru_minflt.
1998-03-26 21:41:16 +00:00
thorpej 8fc4366b1d PAGE_SHIFT, PAGE_MASK, and PAGE_SIZE are all short-hand for kernel variables.
Protect them with _KERNEL.
1998-03-25 00:45:51 +00:00
phil 975f8de47c VM_PSTRAT_RANDOM does not use varible x. #ifdef x's definition. 1998-03-20 17:40:20 +00:00
thorpej dbc7bbee68 Make the previous change `atomic'. 1998-03-19 06:37:26 +00:00
thorpej daade671ae When unsharing or execing, deactivate the old vmspace before reassigning
and activating the new one.  Pointed out by Chris Demetriou.
1998-03-19 04:19:21 +00:00
thorpej d214d5c30a Add vm_page_alloc1() and vm_page_free1(), which allocate/free single
VM pages, not associated with any object.
1998-03-12 06:25:52 +00:00
mycroft 112daacfa3 As in UVM, automatically convert MAP_PRIVATE device mappings to MAP_SHARED. 1998-03-03 14:35:26 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
drochner 4f80f2803f Add a diagnostic panic() to catch attempts to call vm_page_unwire() with
an unmanaged page argument. This can lead to unpredictable results,
depending on the pmap interface (ie, MACHINE_[NEW_]NONCONTIG).
1998-02-23 14:37:00 +00:00
pk ed1d38cfe3 Add "storage" arguments (all NULL) to pool_create() and pool_prime(). 1998-02-19 23:56:37 +00:00
thorpej 1e3e1bfe09 Include the NFS option header. 1998-02-19 00:55:04 +00:00
cgd 3bbb7f7d45 Move pmap_map() function definition to MD headers, as appropriate. It's
an internal function, and the VM system shouldn't try to prototype it.
(Note that some ports _don't_ prototype it.)
1998-02-18 02:05:32 +00:00
mrg d90485202c - add defopt's for UVM, UVMHIST and PMAP_NEW.
- remove unnecessary UVMHIST_DECL's.
1998-02-10 14:08:44 +00:00
thorpej 223caea788 pmap_page_index() is not used in the MACHINE_NEW_NONCONTIG case. 1998-02-08 18:47:06 +00:00
thorpej d319b28938 Round allocations to page size in vm_bootstrap_steal_memory(). 1998-02-08 18:24:52 +00:00
mrg 8f7ee94e13 initial import of the new virtual memory system, UVM, into -current.
UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some
minor portions derived from the old Mach code.  i provided some help
getting swap and paging working, and other bug fixes/ideas.  chuck
silvers <chuq@chuq.com> also provided some other fixes.

these are the changes to the old Mach VM system to allow both to be
available in the kernel.
1998-02-06 00:14:43 +00:00
mrg 5ef401eaaf oops, forgot to add this file earlier. 1998-02-05 14:58:45 +00:00
ross c297f000b7 NFS swap fix. Most files here are modified purely to add a tsleep() wmesg
string. The actual functional changes are:

	1. in vm_page_alloc(), restore some long lost code by Paul Kranenburg
	that reserves the last few pages for kernel objects, adding an
	additional escape for the pageout daemon.

	2. In vm_wait() (replaces VM_WAIT), recognize the amusing fatal
	deadlock where the pagedemon sleeps on a channel that only it ever
	wakes up, and add a timeout and printf. Mod 1 should generally
	prevent this from happening in any case.

	3. Fix a livelock in vm_pageout_page() caused by a pre-wakeup of
	page consumers prior to the pageout, which can easily fail over
	memory issues in NFS and IP code. Also, ++ cnt.v_pageouts only
	if the pageout succeeded.
1998-01-31 04:02:39 +00:00
drochner c0d5e99849 fix overflow of the vm_physmem[] array 1998-01-20 12:34:35 +00:00
thorpej e76d5a2fe1 Oops, don't need vm_page_physget() if PMAP_STEAL_MEMORY. 1998-01-10 03:02:58 +00:00
thorpej 51902c1094 In vm_page_physload(), check page_shift not cnt.v_page_size for
having been initialized.
1998-01-09 08:50:00 +00:00
thorpej 4001cf8069 In vm_mem_init(), don't test for cnt.v_page_size being == 0. It is perfectly
legitimate for this to be set if vm_set_page_size() hasn't been called (it's
how the page size is communicated to vm_set_page_size()).  Instead, test
for page_shift == 0; this is one of the values that vm_set_page_size()
initializes.
1998-01-09 06:00:50 +00:00
thorpej 54f8b4bf57 In the new non-contig case, redefine pmap_steal_memory() as an alternative
to vm_bootstrap_steal_memory(), since we may need to steal memory from
a direct-mapped segment at this early stage of the game (on e.g. MIPS
and Alpha).

This interface is activated by defining PMAP_STEAL_MEMORY in <machine/pmap.h>.
Otherwise, the pmap_virtual_space() prototype is in-scope for use by
vm_bootstrap_steal_memory().
1998-01-08 23:28:04 +00:00
thorpej 15efce41a3 Zorch pmap_startup() prototype. It was never implemented in machine-dependent
code, and is inlined in the MACHINE_NONCONTIG case of vm_page_bootstrap() now.
1998-01-08 23:13:05 +00:00
thorpej 589a1e440e Clean up and consolidate the old non-contig bootstrap functions, and
rename pmap_steal_memory() to vm_bootstrap_steal_memory().
1998-01-08 23:03:24 +00:00
mrg a20d56e92e add new version of non contiguous memory code, written by chuck cranor,
called "MACHINE_NEW_NONCONGIG".  this is required for UVM, the new VM
system (also written by chuck) that is coming soon.  adds new functions:
	vm_page_physload() -- tell the VM system about an area of memory.
	vm_physseg_find() -- returns index in vm_physmem array that this
		address is in.
and several new versions of old functions/macros defined in vm_page.h.

this is the MI portion.  sparc, and then later i386 portions to come.
all other ports need to change to this ASAP!  (alpha is already being
worked on)
1998-01-08 11:36:16 +00:00
thorpej d8ee45898e Garbage-collect __VM_PMAP_HACK. 1998-01-06 08:36:23 +00:00
perry 24920eefb1 RCSID Police. 1998-01-05 19:40:40 +00:00
thorpej 5739c88a75 Implement address space sharing (by keeping ref counts on the vmspace
structure).  Many thanks to Chuck Cranor for debugging assistence.
1998-01-03 02:53:00 +00:00
thorpej b9f1b716f3 Now that all ports have pmap_activate(), and it has an identical interface,
prototype it in <vm/pmap.h>
1998-01-03 01:12:59 +00:00
thorpej a322314f51 Split out the code that prepares a VM space for exec into a new
vmspace_exec() function.
1997-12-31 07:47:41 +00:00
pk 443a2a02f4 "pool" routines moved to kern/subr_pool.c 1997-12-15 11:18:41 +00:00
pk 5d1352c448 Guard against synchronous I/O completetion per swap-device. 1997-12-02 13:47:37 +00:00
pk 1736bb9de8 Make the code a bit more readable. 1997-12-01 17:10:48 +00:00
pk d4a6f93147 Make sure the damned buffer heads are initialized... 1997-12-01 16:33:15 +00:00
pk 46f604677d Avoid several race conditions, especially when a transaction ends in error.
Guard sw_reg_start() against synchronous completions of the device
strategy routines, avoiding possibly boundless recursion.
1997-11-29 00:35:43 +00:00