being that PHYS_TO_VM_PAGE() returns the wrong vm_page for fictitious
pages but unwiring uses PHYS_TO_VM_PAGE(). The resulting panic
reported an unexpected wired count. Rather than attempting to fix
PHYS_TO_VM_PAGE(), this fix takes advantage of the properties of
fictitious pages. Specifically, fictitious pages will never be
completely unwired. Therefore, we can keep a fictitious page's wired
count forever set to one and thereby avoid the use of
PHYS_TO_VM_PAGE() when we know that we're working with a fictitious
page, just not which one.
In collaboration with: green@, tegge@
PR: kern/29915
and improved some comments). Also, made the documented {f,s}uword()
functions the standard entry points and the undocumented {f,s}uword64()
functions alternative entry points, like {f,s}uword32() for i386's. The
bitrot in the comments was a little larger here -- there are new undocumented
32-bit sub-word functions, not just renaming of 16-bit functions from
documented ones to undocumented ones.
of not clearing the flags for execv() syscall will result that a new
program runs in KSE thread mode without enabling it.
Submitted by: tjr
Modified by: davidxu
fixes was applicable to HEAD, originally it was thought this
should only be done in RELENG_4. Implement IO_INVAL in the vnode
op for writing by marking the buffer as "no cache". This fix
has already been applied to RELENG_4 as Rev. 1.65.2.15 of
ufs/ufs/ufs_readwrite.c.
Reviewed by: alc, tegge
Split the baby. For idepci devices, now both legacy mode bits need
not be set. We can run an idepci in a split mode. However, it only
works better than before, not works. It works better in that when one
device is legacy and the other isn't and disabled, we now operate
correctly.
sos submitted a version of this patch.
subclass, progif and revid. While these are typically read
only fields, they aren't always read-only. progif is writable
for ata devices, for example. It does no harm when they are
read only, and helps when they aren't.
to try to allocate things on my parent can be taken out. It duplicates code.
Also, add comment about why the power state stuff is here (type 2
devices don't participate in the power state save/restore due to
larger Bx issues).
chattiness was left in for debugging, but now that nearly all of the
problems relating to the changes have been fixed, it is only annoying. It
is still available via bootverbose.
Prodded by: jhb
threatened in rev.1.10 of usr.sbin/kgmon/kgmon.c more than 2 years ago.
kgmon has been recovering from the missing initialization for too
long, but the fixup there is ifdefed for i386's and shouldn't be
needed for other arches.
high resolution kernel profiling (options GUPROF. "U" in GUPROF stands
for microseconds resolution, but the resolution is now smaller than 1
nanosecond on multi-GHz machines and the accuracy is heading towards
1 nanosecond too). Arches that support GUPROF must now provide certain
macros for the calibration. GUPROF is now only supported for i386's,
so the absence of the new macros for other arches doesn't break anything
that wasn't already broken. amd64's have uncommitted support for
GUPROF, and sparc64's have support that seems to be complete except
here (there was an #error for non-i386 cases; now there are undefined
macros).
Changed the asms a little:
- declare them as __volatile. They must not be moved, and exporting a
label across asms is technically incorrect, so try harder to stop gcc
moving them.
- don't put the non-clobbered register "bx" in the clobber list. The
clobber lists are still more conservative than necessary.
- drop the non-support for gcc-1. It just gave a better error message,
and this is not useful since compiling with gcc-1 would cause thousands
of worse error messages.
- drop the support for aout.
because VLAN hardware features are enabled in em(4) by default.
Note: Currently vlan(4) has a bug that it consults
if_capabilities, not if_capenable. This will be fixed
after all the network drivers set VLAN bits in
if_capenable properly.
- Connect geom_stripe and geom_nop modules to the build.
- Connect STRIPE and NOP classes to the LINT build.
- Disconnect gconcat(8) from the build.
Supported by: Wheel - Open Technologies - http://www.wheel.pl
is intend to be fast. Just like CONCAT class it provides manual and
auto configuration methods.
Supported by: Wheel - Open Technologies - http://www.wheel.pl
it is very useful for tests. One is able to destroy its provider
forcibly if wants to test how other class handle such events.
One is also able to specify failure probability to check how other
classes handle I/O errors.
Supported by: Wheel - Open Technologies - http://www.wheel.pl
unless it's in the closed or listening state (remote address
== INADDR_ANY).
If a TCP inpcb is in any other state, it's impossible to steal
its local port or use it for port theft. And if there are
both closed/listening and connected TCP inpcbs on the same
localIP:port couple, the call to in_pcblookup_local() will
find the former due to the design of that function.
No objections raised in: -net, -arch
MFC after: 1 month
