the user mappings from the tlb due to the context numbers rolling over. The
store to the internal mmu register must be followed by a membar #Sync before
much else happens to "avoid data corruption", so we use special inlines which
both disable interrupts and ensure that the compiler will not insert extra
instructions between the two. Also, load the tte tag and check if the context
is nucleus context, rather than relying on the priviledged bit which doesn't
actually serve any purpose in our design, and check the lock bit too for
sanity.
locking flags when acquiring a vnode. The immediate purpose is
to allow polling lock requests (LK_NOWAIT) needed by soft updates
to avoid deadlock when enlisting other processes to help with
the background cleanup. For the future it will allow the use of
shared locks for read access to vnodes. This change touches a
lot of files as it affects most filesystems within the system.
It has been well tested on FFS, loopback, and CD-ROM filesystems.
only lightly on the others, so if you find a problem there, please
let me (mckusick@mckusick.com) know.
pmap_qremove. pmap_kenter is not safe to use in MI code because it is not
guaranteed to flush the mapping from the tlb on all cpus. If the process
in question is preempted and migrates cpus between the call to pmap_kenter
and pmap_kremove, the original cpu will be left with stale mappings in its
tlb. This is currently not a problem for i386 because we do not use PG_G on
SMP, and thus all mappings are flushed from the tlb on context switches, not
just user mappings. This is not the case on all architectures, and if PG_G
is to be used with SMP on i386 it will be a problem. This was committed by
peter earlier as part of his fine grained tlb shootdown work for i386, which
was backed out for other reasons.
Reviewed by: peter
case use size of the currently displaying font as a suffix. For example,
when the when the size of the currently displayed font is 8x8 the
following command will load koi8-r-8x8.fnt.
# vidcontrol -f koi8-r
MFC after: 2 weeks
older PCI BIOSes hate this and this leads to panics when it is done. Also,
assume that a uniquely routed interrupt is already routed. This also
seems to help some older laptops with feable BIOSes cope.
o Add exerpimental support for identifying lucent cards. All of mine
come back with ID of 1, but NetBSD committed code for 5. So accept
both.
o rename wi_prism2_ver to wi_firmware_ver so that we could, if necessary,
do special things for lucent cards too.
o Bring in a small part of the changes from airtools: The wi_cmd function
now takes two additional arguments. I didn't bring in their ioctls yet.
o eliminate the use of LE16TOH, and remove its define.
o Print the firmware as if there were 100 versions instead of 10. This means
that 6.1 and 6.10 aren't confusing to people. We now print 6.01 in the
former case.
# A good junior hacker project would be to merge the NetBSD, FreeBSD, and
# OpenBSD drivers into one source base.
administrator wishes to run commands outside of the PATH, he should
use a full pathname for the executable or set the PATH as appropriate
in any local startup scripts.
PR: misc/35770
