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This "power saving" disables the apic when both cpu cores hit the hlt
instruction which kills our timer.
From FreeBSD.
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- math.h shouldn't define FLT_EVAL_METHOD, but float.h should (per
C99). remove from math.h, and add proper definitions in float.h
ok millert@
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Right now when mi_switch picks up the same proc, we didn't clear the
flag which would mean that every time we service an AST we would attempt
a context switch. For some architectures, amd64 being probably the
most extreme, that meant attempting to context switch for every
trap and interrupt.
Now we clear_resched explicitly after every context switch, even if it
didn't do anything. Which also allows us to remove some more code
in cpu_switchto (not done yet).
miod@ ok
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parameter and returns an aligned random load address for position
independent executables to use. This also adds three new vmparam.h
defines to specify the maximum address, minimum address and minimum
allowed alignment for uvm_map_pie() to use. The PIE address range
for i386 was carefully selected to work well within the i386 W^X
framework.
With much help and feedback from weingart@.
okay weingart@, miod@, kettenis@, drahn@
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* For amd64, remove pcibios traces.
* make RBUS_IO_START, RBUS_IO_SIZE, RBUS_MIN_START and RBUS_MEM_SIZE
(on i386) configurable via kernel options.
* Remove unneeded headers.
* Some cleanups.
originally reported in pr/5829 and tested by viq <viq at viq dot ath dot cx>.
fixes ian@ laptop too.
kettenis@ and miod@ agrees that although not perfect, this is the right
direction.
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Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.
OK deraadt@
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own page 0, as discussed with miod (and many others previously, including
art and toby). On sparc, make this __LDPGSZ because PAGE_SIZE is non-constant
ok miod tedu
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See http://download.intel.com/technology/security/downloads/31516804.pdf
for more information.
ok deraadt@ 'looks ok to me' djm@
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and seems to work. If it breaks, people had plenty of chances to
complain.
ok deraadt@
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from travers buda, via deraadt@
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we support i386-compat mode on amd64.
agreed by beck@, dlg@, kettenis@
ok deraadt@, tom@
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Remove IPL_SERIAL since it is unused.
ok krw@, weingart@, deraadt@
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pointed out by and ok drahn@, toby@;
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ok marco@, miod@
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before pcibios(4), and then.... if acpi(4) attaches, skip pcibios(4) since
it messes the machines up. Fixes claudio's HP dl320 G5, and almost assuredly
others.
ok kettenis
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deraadt@ ok
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code. At this moment all architectures get the copy of the old code
except i386 which gets a new shiny implementation that doesn't spin
at splhigh (doh!) and doesn't try to grab the biglock when releasing
the biglock (double doh!).
Shaves 10% of system time during kernel compile and might solve a few
bugs as a bonus.
Other architectures coming shortly.
miod@ deraadt@ ok
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ok deraadt
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uniform. as a result shared code like acpi needs less #ifdef's
ok marco kettenis
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ok deraadt
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designations.
ok deraadt
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prompted by deraadt
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ok deraadt
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ok kettenis
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ok art deraadt
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well (in fact, all 4 combinations of codebase and processor) written by
Mike Belopuhov and Aleksey Lomovtsev
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the holes a MMU may have from a given vm_map. This will be automagically
invoked for newly created vmspaces.
On platforms with MMU holes (e.g. sun4, sun4c and vax), this prevents
mmap(2) hints which would end up being in the hole to be accepted as valid,
causing unexpected signals when the process tries to access the hole
(since pmap can not fill the hole anyway).
Unfortunately, the logic mmap() uses to pick a valid address for anonymous
mappings needs work, as it will only try to find an address higher than the
hint, which causes all mmap() with a hint in the hole to fail on vax. This
will be improved later.
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ok miod
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noted by Constantine Kousoulos <wuwei@freemail.gr>
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cpu_disklabel can go away, since nothing anymore needs to use it; ok miod
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to support hotplug media on most architectures. disklabel setup and
verification done using new helper functions. Disklabels must *always*
have a correct checksum now. Same code paths are used to learn on-disk
location disklabels, to avoid new errors sneaking in. Tested on almost all
cases, testing help from todd, kettenis, krw, otto, dlg, robert, gwk, drahn
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get bus clock. copy in some more code from i386 to deal with both families,
and be more watchful for unknown models.
fixes a panic reported by johan lindman. ok gwk
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both 32- and 64-bit versions can be created (previously only one or the
other could be built for a given boot loader).
Use this to allow the i386 and amd64 boot blocks to boot both ELF32 and
ELF64 kernels (i.e. amd64 boot blocks can now load i386 kernels, and
vice versa). Obviously the system must support LONG mode in order to
successfully run the amd64 kernel once it is loaded.
Advice and discussions from/with dale@ (going back three years). Much
testing nick@ and todd@; thanks.
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use); ok tedu
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Add EST support from i386, minus the tables
Also add in support for CPU temperature sensors, based on diff to tech
by Pierre Riteau.
ok deraadt gwk
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drahn@ ok
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mbuf constants from MD param.h to MI param.h.
Besides being the same on every arch, things will
most probly break if any arch has different values
then the others.
The NMBCLUSTERS constants needs to be MD though;
ok miod@,krw@,claudio@
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in locore so that we can use the direct map in pmap_bootstrap when
setting up the initial page tables.
- Introduce a second direct map (I love large address spaces) with
uncached pages.
jason@ ok
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miod@ ok
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simple. This is basically the same code as on i386 and basically the same
performance improvements.
This change also includes code to delay the freeing of ptps until they
have been properly shot.
in snaps for a week, no problems reported.
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