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as sparc* do not use Xsun-compatible event interface anymore, and alpha only
used this for Xtga which we do not ship anymore.
Discussed long ago with matthieu@
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at a rate independant of the HZ clock. when profiling is enabled
stat clock now runs at 1000/s instead of the normal 100/s. Other
improvements to the ppc clock handling and KNF/ansi.
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lower 32 bits.
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inlined functions, helps improve readability and fix a couple of bugs.
ok miod@
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chars. Fixes other defines if -fsigned-chars is specified. ok deraadt.
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rescinded 22 July 1999. Proofed by myself and Theo.
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ok mickey@
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by reference, not by value, ok matthieu#, miod@
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has not been previously mapped EXE, flush it. If a writeable mapping
which is not executable occurs for the page, clear this bit.
Solves a problem where an executable page is double mapped, first without
EXE then accessed for execute at a different physical page, the cache
will behave properly.
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not used in kernel anyway. pointed out by art@
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recently on other architectures.
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which straddled the last register first stack parameter.
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and return a VM_PAGE. This is to allow sparc64 to cheaply record the
VAC color for those pages.
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The only OSes I've seen that use SIZE_T_MAX are 4.4BSD-derived whereas
SYSV things seem to use SIZE_MAX. It is also consistent with SSIZE_MAX
(which we already have). deraadt@ OK
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the fault is a EXE fault or R/W fault.
- mask/or the SR_NOEXEC bit into the segment register value
when the number of executable pages becomes 0/non-zero.
- create segments with SR_NOEXEC set, will be cleared when first
exec mapping in the segment is created.
- allow pte_spill_X() to deal with a new type of fault, page mapped
but non executable, when execute was requested.
Adds up to - non-exec stack support for powerpc.
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portions of the tree.
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non-executeable stack.
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pmap_t is the exception, it is required by the MI code so pmap_t will
be used instead of using 'struct pmap *' in the code. (consistency)
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Move the ddb files form macppc/macppc to powerpc/ddb, so that mvmeppc
can benefit from the better ddb that was in macppc.
db_interface.c is left as an md part.
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ok drahn@
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Currently as no-ops everywhere.
ok art@, deraadt@
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type characteristics.
internal_types.h will contain only settings invisible from standard C, e.g.,
in the __* or _[A-Z]* namespace, and be reused by files like limits.h.
This allows us to shorten machine/limits.h greatly, as all the common defines
are now in sys/limits.h, plus a small stub in internal_types.h.
Tested on all arches as far as I know.
Approved after discussion with art, millert, deraadt, and others.
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from the preferred.
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Fix bug where altivec context was not freed on process exit.
Fix bug where vscr was not correctly saved/restored.
replace asm statement was macros which expand to the same
asm code or to .long XXX which evaluates to the same instruction
since in-tree gas does not support altivec.
Enable ALTIVEC support by default on macppc, still conditional
for other powerpc ports.
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the spill list for each PTEG, the V->P translations are stored in
trees for each pmap. All valid kernel mappings are preallocated
in 1-1 memory so that tlb spill/loads for kernel accesses can be
looked up while physical, user mappings are not guaranteed to
be 1-1 mapped, thus the kernel must go virtual to look up user
mappings. While this is more expensive, the tree search is much
lower cost than the long linked list search. Also on each pmap_remove()
it was necessary to search the linked lists for each possible mapping,
now it just looks up the entry in the tree.
This change gives a 25-36% speedup in 'make build' time. What was
around 2:50 is now around 1:55 on a 733MHz G4.
This change causes a likely existing bug to appear quite often,
it deals with the segment register invalidation in kernel mode.
Because of that problem, currently this change limits the physical
memory used to 256MB. This limitation will be fixed soon, it is not
an error in the pmap code.
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
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support for __warn_references (both from alpha/sparc4).
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protection was not good enough. work from theo, pefo, toby.
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in ptrace.h, not in md header files.
Protect vector functions/variables with _KERNEL.
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date: 2000/02/11 19:22:52; author: thorpej;
Add some very simple code to auto-size the kmem_map. We take the
amount of physical memory, divide it by 4, and then allow machine
dependent code to place upper and lower bounds on the size. Export
the computed value to userspace via the new "vm.nkmempages" sysctl.
NKMEMCLUSTERS is now deprecated and will generate an error if you
attempt to use it. The new option, should you choose to use it,
is called NKMEMPAGES, and two new options NKMEMPAGES_MIN and
NKMEMPAGES_MAX allow the user to configure the bounds in the kernel
config file.
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pmap_update API (right now it's nop).
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functions. Seems to have no effect on system run time (it should have...)
reduces GENERIC kernel size by 52k.
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