it in pmap_create(), and freeing the lev1map in pmap_destroy(). This
means that pm_lev1map is consistent for the life of the pmap.
2. pmap_extract() now uses vtophys() for the kernel pmap. This avoids
having to lock the kernel pmap, since kernel PT pages are never freed.
3. Because of (1), pmap_asn_alloc() no longer needs to operate on a locked
pmap; pm_lev1map will never change over the life of the pmap, and all
other access to the pmap is done in per-CPU fields or with atomic
operations.
4. Because of (3), pmap_activate() no longer needs to lock the pmap
to do its work, thus eliminating the deadlock with sched_lock described
in PR port-alpha/25599. This is safe because we are guaranteed that
the pmap is still alive, since by definition an LWP that uses that it
is about to run.
Thanks to Michael Hitch for the analysis, and Michael and Ragge for testing.
TAILQ set of macros from queue.h... It's way too easy to make mistakes...
config(1) was segfaulting in deldev() in some situations... Reported by
Brend Ernesti.
-fabricate a trivial geometry also in the case of images <=1M
(XXX I didn't add a check for >0 size -- this is generally harmless
because there are enough boundary checks present, and it allows
to test some corner cases in the disklabel handling code)
-ignore the VNF_KLABEL flag -- the vnd device is if limited (and
well-defined!) lifetime anyway, and the implications of "keeplabel"
are confusing at best
images from "normal" into cloop2-format compressed images and back.
Written by Florian Stoehr (netbsd@wolfnode.de) with some polishing
by me.
Compressed disk images can be used with the vnd(4) driver when compiled with
VND_COMPRESSION and "vnconfig -z". Useful for creation of Live CDs/DVDs.
images from "normal" into cloop2-format compressed images and back.
Written by Florian Stoehr (netbsd@wolfnode.de) with some polishing
by me.
Compressed disk images can be used with the vnd(4) driver when compiled with
VND_COMPRESSION and "vnconfig -z". Useful for creation of Live CDs/DVDs.
and plain file images too. If no TOC can be read, a single track is
assumed which spans the whole thing.
The disklabel will be updated if supported by the device. If not, just
the ISO volume label information will be printed.
pretend anymore we don't have it.
This is the result of 7 hours of work on the train journey forth and
back to the family reunion for the birthday of my cousin Mickael, whom
I thank for living just far away enough.
dyoung