previously ircrc dialed through /net itself and resolved ips on its own. this prevented the use of an ip address, and also prevented use of ipv6. now you can use an ip, or a dns name that resolves to ipv6. the -T flag is also added to use tlsclient for encrypted connections.
At least on some NVIDIA cards the default scaling mode makes
black borders visible on all sides, even on native resolution.
This patch adds a generic "scaling MODE" command to vgactl
and adds support for it on VESA through NVIDIA VBE OEM extension.
It hasn't been tested on any other video cards, but shouldn't
break anything as the scaling mode is only set on write to vgactl.
we have to call tmpmap() with interrupts disabled as the map
is a per cpu and a interrupt can preempt us while we where
commited to use a entry but *before* we wrote it!
tmpunmap() already calls coherence() before flushpg() so it
is not needed after tmpunmap().
splhi() in l2free() isnt needed as l2free() is always called
with interrupts disabled from mmuswitch() and mmurelease().
fpsave needs to disable the fpu! otherwise we won't catch
the mathtrap() in the kernel or when context switching to
another process that will attempt to use it.
intrdisable() will always be able to unregister the interrupt
now, so there is no reason to have it return an error value.
all drivers except uart8250 already assumed it to never fail
and theres no need to maintain that complexity.
other operating systems always set the "don't fragment" bit
in ther outgoing ipv4 packets causing us to unnecesarily
call ip4reassemble() looking for a fragment reassembly queue.
the change excludes the "don't fragment" bit from the test
so we now call ip4reassemble() only when the "more fragmens"
bit is set or a fragment offset other than zero is given.
this optimization was discovered from akaros.
to allow bytewise access to /proc/#/fd, the contents of the file where
recreated on each call. if fd's had been closed or reassigned between
the reads, the offset would be inconsistent and a read could start off
in the middle of a line. this happens when you cat /proc/#/fd file of
a busy process that mutates its filedescriptor table.
to fix this, we now return one line record at a time. if the line
fits in the read size, then this means the next read will always start
at the beginning of the next line record. we remember the consumed
byte count in Chan.mrock and the current record in Chan.nrock. (these
fields are free to usefor non-directory files)
if a read comes in and the offset is the same as c->mrock, we do not
need to regenerate the file and just render the next c->nrock's record.
for reads smaller than the line count, we have to regenerate the content
up to the offset and the race is still possible, but this should not
be the common case.
the same algorithm is now used for /proc/#/ns file, allowing a simpler
reimplementation and getting rid of Mntwalk state strcture.
mpshutdown() used to call acpireset() making it impossible to build
a kernel without archacpi. now, mpshutdown() is a helper function
that only shuts down the application processors that gets used from
mpreset() and acpireset().
the generic machine reset code in exported by devarch's archreset()
function that is called by mpreset() and from acpireset() as a fallback.
so the code duplication that was in mpshutdown() is avoided.
