Implement the protection check required by the pmap_extract_and_hold()
specification.
Remove the acquisition and release of Giant from pmap_extract_and_hold() and
pmap_protect().
Many thanks to Ken Smith for resolving a sparc64-specific initialization
problem in my original patch.
Tested by: kensmith@
bio_driver1 (as all the rest).
This introduced a small memory leak, but it wasn't really critical,
because maximum memory for g_stripe_zone is always set, so after few
requests gstripe was working in "economic" mode.
contents of /usr/src/rescue. Until now, the files were shipped with
releases but sysinstall would ignore them (resulting in a non-buildable
source tree).
Sanity checked by: jhb
are resevered, they can be written with anything, but they always read
as zero, we should simulate it in set_regs() as we are reading/writting
real hardware %rflags register.
contributed to the transferable load count. This prevents any potential
problems with sched_pin() being used around calls to setrunqueue().
- Change the sched_add() load balancing algorithm to try to migrate on
wakeup. This attempts to place threads that communicate with each other
on the same CPU.
- Don't clear the idle counts in kseq_transfer(), let the cpus do that when
they call sched_add() from kseq_assign().
- Correct a few out of date comments.
- Make sure the ke_cpu field is correct when we preempt.
- Call kseq_assign() from sched_clock() to catch any assignments that were
done without IPI. Presently all assignments are done with an IPI, but I'm
trying a patch that limits that.
- Don't migrate a thread if it is still runnable in sched_add(). Previously,
this could only happen for KSE threads, but due to changes to
sched_switch() all threads went through this path.
- Remove some code that was added with preemption but is not necessary.
hasn't been any package build for ia64 for a long time and in this
case it means that the cdrtools package on the FTP sites is one that
doesn't have mkisofs. This breaks the release build. By trying to
build the port first, we protect ourselves a bit more against this.
Specifically, change the second level menu title from 'Country' to
'Country or Region', since e.g. Hong Kong is not a country.
Submitted by: Xin LI <delphij@frontfree.net>
umich copyright is asserting.
Clarify that the copyright I'm asserting is the standard Berkeley
license.
Remove Giant assertions from AARP and DDP input routines.
another process already has /dev/snp0 open, the snp(4) will return
EBUSY, in which case watch will try to open /dev/snp1..9. Currently
watch does not check errno to see if the failure was a result of EBUSY.
This results in watch making futile attempts to open snp0..snp9 even
though devices may not exist or the caller does not have permissions
to access the device.
In addition to this, it attempts to setup the screen for snooping even
though it may not ever get an snp device.
So this patch does two things
1) Checks errno for EBUSY, if open(2) fails for another reason
print that reason and exit.
2) setup the terminal for snooping after the snp descriptor has
been obtained.
Approved by: bmilekic (mentor)
is here so that we can gather stats on the nature of the recent rash of
hard lockups, and in this particular case panic the machine instead of
letting it deadlock forever.
becauses some syscalls using set_mcontext can sneakily change
parameters and later when those syscalls references parameters,
they will wrongly use register values in mcontext_t.
Approved by: peter
install of Postfix fails since Postfix 1 is picked from INDEX instead
of Postfix 2.
The problem is that the package_add function matches multiple Postfix
packages and then installs a "random" version (the last one found in
INDEX). This does not occur with a CD-ROM install since there is only
one Postfix package on the CD-ROM.
The correct solution to this would be to check the origin field from
INDEX instead of the package name, but due to the way sysinstall is
made that is not trivial, so instead work around the problem by
hard-coding the Postfix major and minor revision (for the current
stable version) to install directly into the package_add call.
PR: misc/65426
Reported by: Harold Kachelmyer <bugs@princessharold.net>
Approved by: trhodes
chipsets, based on Linux's via-agp.c. On boot, the system selects which AGP
version to use based on the inserted card. If v2 was chosen, the chipset
needs to be programmed with the v2 registers still. Also included in kern/69953
are changes to make the programming of the v3 registers match linux, but that
will be left out until the need to do so is confirmed (want specs or a tester).
PR: kern/69953
Submitted by: Oleg Sharoiko <os@rsu.ru>
Tested by: Oleg Sharoiko <os@rsu.ru>, Geoff Speicher <geoff@speicher.org>
(full version from PR)
The hardware always gives read access for privilege level 0, which
means that we cannot use the hardware access rights and privilege
level in the PTE to test whether there's a change in protection. So,
we save the original vm_prot_t in the PTE as well.
Add pmap_pte_prot() to set the proper access rights and privilege
level on the PTE given a pmap and the requested protection.
The above allows us to compare the protection in pmap_extract_and_hold()
which was missing. While in pmap_extract_and_hold(), add pmap locking.
While here, clean up most (i.e. all but one) PTE macros we inherited
from alpha. They were either unused, used inconsistently, badly named
or simply weren't beneficial. We save the wired and managed state of
the PTE in distinct (bit) fields.
While in pte.h, s/u_int64_t/uint64_t/g
pmap locking obtained from: alc@
feedback & review by: alc@
