need to access this when we have the proclist locked for reading,
and thus cannot store it in the PCB (which may be swapped out).
As part of this, call pmap_activate() from cpu_switch() to switch
to the new address space, and refresh the PCB's copy of the LDT
selector from the pmap structure (see above paragraph). We need
to do this for MP support anyhow.
Fixes a "panic: spinlock_switchcheck: CPU 0 has 1 spin locks" via
gdt_compact() reported by Nathan Williams.
so that special setup functions needed for some CPUs will be run before
some things (like UVM) are inited.
Add vm_page_zero_enable = FALSE to the cyrix 6x86 case, as page zeroing
while idle causes problems.
I-sync in pmap_remove_mapping() if the old mapping had PG_EXEC, and
kick curcpu (IMB) or other CPUs (via an IPI) only if the pmap was
the kernel pmap or active on other CPUs (curcpu is handled in userret()).
- Use lazy I-sync everywhere, (hopefully) eliminating the last of the
I-sync issues for multiprocessor support.
- Eliminate some memory barriers added in a couple of previous revisions,
after some discussion on port-alpha/tech-smp.
Still some lazy I-sync optimization possibilites:
- pmap_changebit() does not need to I-sync when only write-protecting
a page.
- pmap_asn_alloc() may be able to cancel a pending lazy I-sync when a
new ASN is allocated. Need to double check against Green Book or
Brown Book.
handler to hook up device interrupts and softc callbacks.
Suggested by: Jason Thorpe and Toru Nishimura
* Fixup the indenting in a few places to conform to NetBSD style
(/mnt)/usr/share/zoneinfo in a listbox, and setting (/mnt)/etc/localtime
accordingly.
* Adjust for the needed menuc change un run.c's log_flip() and script_flip()
functions.
Related PRs:
5777 sysinst does not offer to tweak /etc/localtime
8099 changing the default time zone is non-obvious
9910 sysinst doesn't ask about setting timezone
* bring closer to KNF
* when selecting a item in a menu, call the opt_action() callback with
a pointer to the struct menudesc, so the callback has a chance to find
out which item was selected. Having a seperate callback for each
item is ok for small menus, but not for ones with many objects.
* Add menu-option MC_NOSHORTCUT to not print letters ("a: ", ...)
in front of list items. Again, this is for menues with lots of entries
as e.g. the upcoming sysinst set_timezone() function composes.
* Fix a long-standing bug WRT pagewise scrolling - the cursor is now
properly placed one page up/down
searchs (amongst others) are case insensitive.
* in interactive mode (-i), when editing entries display supported disk types
and filesystem types when given `?' (when ``[?]'' appears in the prompt
this feature is supported for the question).
* support `m' as a suffix equivalent to `M'
* in interactive mode, be a bit more sensible about handling errors and EOF
* implement dumpnames(), which takes a char ** and size, and displays
as per ls -F (sorted, listed vertically) but indented by one tab
* don't assume d_typename and d_packname are NUL terminated
* fix up some comments and some warning messages (bad cut & pastos :)
* deprecate deffstypename() and getfstypename()
* be consistent when using sizeof()
the DMA FIFO on non block aligned writes. Not doing this causes large
writes (>4k) that are not aligned to incorrectly write 64bytes
of data every 4k interval. This only occurs on raw devices - typically
newfs fails to create a clean filesystem.
onintstack to be real integers. Add ISP_ILOCK/ISP_IUNLOCK macros.
Fix the isp_lock/isp_unlock inlines to stop being so embarrassingly
in error. Why, or why, can't I have mutex_enter/mutex_exit, pretty please?
pk