Tilting allows using left/right rotated or invetrted display orientation.
This can be changed at runtime such as: echo tilt right > /dev/vgactl
This removes the old panning and vga overlays as they are only implemented
with some ancient vga controllers.
The idea is to avoid the magic files that contain
per process information in devcons when possible.
It will make it easier to deprecate them in the future.
Previously, mmurelease() was always called with
palloc spinlock held.
This is unneccesary for some mmurelease()
implementations as they wont release pages
to the palloc pool.
This change removes pagechainhead() and
pagechaindone() and replaces them with just
freepages() call, which aquires the palloc
lock internally as needed.
freepages() avoids holding the palloc lock
while walking the linked list of pages,
avoding some lock contention.
On 12/18/20, Jacob Moody wrote:
> Hello,
>
> I recently ran in to some issues with pointing an unbound server towards a
> 9front dns server as its upstream.
> The parsing seemed to fail when ndb/dns received a DNSKEY RR from it's own
> upstream source on behalf of unbound.
> This patch catches and stores the DNSKEY from the upstream server to prevent
> this.
we might as well handle the per process cycle
counter in the portable part instead of duplicating the code
in every arch and have inconsistent implementations.
we now have a portable kenter() and kexit() function,
that is ment to be used in trap/syscall from user,
which updates the counters.
some kernels missed initializing Mach.cyclefreq.
Provide a central function to change the user id
of the calling process.
This is mostly used by programs to become the none
user, followed by a call to newns().
vt sets several environment variables ($TERM, $COLS, $LINES)
after exiting. This change rforks the environment so that this
detritus doesn't get left behind.
Using strlen in strndup will walk past the first
n bytes up to the terminator, which may not be
present. This is not what we want.
While we're here, do some cleanups.
