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to allow bpf to manage shared address space.
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Pass the right amount of arguments and rename them back to their right names.
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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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- Change pmap_change_wiring to pmap_unwire because it's only called that way.
- Remove pmap_pageable because it's seldom implemented and when it is, it's
either almost useless or incorrect. The same information is already passed
to the pmap anyway by pmap_enter and pmap_unwire.
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- make sure that vsunlock doesn't unwire mlocked memory.
- fix locking in uvm_useracc.
- Return the error uvm_fault_wire in uvm_vslock (will be used soon).
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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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CLSIZE -> 1
CLBYTES -> PAGE_SIZE
OLOFSET -> PAGE_MASK
etc.
At the same time some archs needed some cleaning in vmparam.h so that
goes in at the same time.
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1GB i386 machines needs this. The fix is heavily based on Jason Thorpe's
found in NetBSD. Here is his original commit message:
Instead of checking vm_physmem[<physseg>].pgs to determine if
uvm_page_init() has completed, add a boolean uvm.page_init_done,
and test against that. Use this same boolean (rather than
pmap_initialized) in pmap_growkernel() to determine if we are
being called via uvm_page_init() to grow the kernel address space.
This fixes a problem on some i386 configurations where pmap_init()
itself was needing to have the kernel page table grown, and since
pmap_initialized was not yet set to TRUE, pmap_growkernel() was
choosing the wrong code path.
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when we free it; art@ ok
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on NetBSD's code, as well as some faked Posix RT extensions by me. This makes
at least simple linuxthreads tests work.
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Be more careful in amap_alloc1 when handling failed allocations. We could have
incorrectly returned success when the first or second of three allocations
failed.
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instead of depending on the callers to do that. (which they don't)
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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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with a 'make build'. From NetBSD. art@ ok
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just got cranked a little while ago. discussion with millert
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wrapper, so this removes a dependence on the old VM system. From NetBSD.
art@ ok
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Otherwise we can end up in a situation where the syncer waits for pages
and the pagedaemon waits for buffers.
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With soft updates, writing out pages to disk can cause a bunch of allocations.
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Change VM/UVM to use buf_replacevnode to change the vnode associated
with a buffer.
Addition v_bioflag for flags written in interrupt handlers
(and read at splbio, though not strictly necessary)
Add vwaitforio and use it instead of a while loop of v_numoutput.
Fix race conditions when manipulation vnode free list
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This is to match (make diffs smaller) the code in NetBSD.
new gcc inlines those functions, so this could also be a performance win.
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Only change vm_dsize if the allocation succeeded.
From Jason Thorpe.
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Plus misc cleanup.
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break swap paritions into sections, each section has own
encryption key. if a section's key becomes unreferenced, erase it.
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large memory machines. This time I really hope we can continue quite a bit
away over the Gig.
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sysctl.
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- Introduce a new type of map that are interrupt safe and never allow faults
in them. mb_map and kmem_map are made intrsafe.
- Add "access protection" to uvm_vslock (to be passed down to uvm_fault and
later to pmap_enter).
- madvise(2) now works.
- various cleanups.
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