respond to MSG_GLOBAL_REQUEST with MSG_REQUEST_FAILURE
as stated by rfc4254 when server wants a reply.
failing todo so breaks some proprietary keep-alive schemes.
coproc.c generated the instrucitons anew each time,
requiering a i+d cache flush for each operation.
instead, we can speed this up like this:
given that the coprocessor registers are per cpu, we can
assume that interrupts have already been disabled by
the caller to prevent a process switch to another cpu.
we cache the instructions generated in a static append
only buffer and maintain separate end pointers for each
cpu.
the cache flushes only need to be done when new
operations have been added to the buffer.
- make frame base pointer variable
- in rwreg(), save/restore the interpreter state and allocate a Frame* on the stack
- add overflow checks for frame base pointer to xec() and amleval()
- gc() scans the whole stack from FP to the *real* bottom F0
reference: https://github.com/raspberrypi/firmware/issues/542
procsave(Proc* p)
{
uvlong t;
cycles(&t);
p->pcycles += t;
// TODO: save and restore VFPv3 FP state once 5[cal] know the new registers.
fpuprocsave(p);
/*
* Prevent the following scenario:
* pX sleeps on cpuA, leaving its page tables in mmul1
* pX wakes up on cpuB, and exits, freeing its page tables
* pY on cpuB allocates a freed page table page and overwrites with data
* cpuA takes an interrupt, and is now running with bad page tables
* In theory this shouldn't hurt because only user address space tables
* are affected, and mmuswitch will clear mmul1 before a user process is
* dispatched. But empirically it correlates with weird problems, eg
* resetting of the core clock at 0x4000001C which confuses local timers.
*/
if(conf.nmach > 1)
mmuswitch(nil);
}
- clean dcache before turning off caches and mmu (rebootcode.s)
- use WFE and inter-core mailboxes for cpu startup (rebootcode.s)
- disable SMP during dcache invalidation before enabling caches and mmu (in armv7.s)
- synchronize rebootcode installation
- handle the 1MB identity map in mmu.c (mmuinit1())
- do not overlap CONFADDR with rebootcode, the non boot
processors are parked there.
- make REBOOTADDR physical address
- disable local clock on interrupt to prevent accidents when reenabling
- always regitster local clock interrupt handler, even for cpu0
- simplify microdelay()
- don't mess with watchdog
revert last change, which used games/wadfs to expose genmidi and music lumps.
replacements from patch wads were never seen that way. instead, write genmidi
and music lumps to /tmp and play them from there.
combining marks will have zero advance, but it results in zero-width
glyphs in subfonts. fall back to width so something meaningful is
rendered even if its not combined properly.
when clering smi enable bits in the legacy control/status register,
preserve the reserved bits. clear the RW1C bits.
linux code claims intel xhci controller needs a 1ms delay before
accessing any register after reset.
pcienable() puts a device in fully powered on state
and does some missing initialization that UEFI might
have skipped such as I/O and Memory requests being
disabled.
pcidisable() is ment to shutdown the device, but
currently just disables dma to prevent accidents.
on Samsung ATIV Smart PC Pro XE00T1C-A01CL, the EHCI handoff
causes the system to freeze in UEFI mode as soon as we assert
the os semaphore bit.
until a general solution is found, provide these parameters to
disable the handoff for now as it seems to otherwise work fine.
when a prefix is added with the onlink flag clear, packets
towards that prefix needs to be send to the default gateway
so we omit adding the interface route.
when the on-link flag gets changed to 1 later, we add the
interface route.
the on-link flag is sticky, so theres no way to clear it back
to zero except removing and re-adding the prefix.
automatic Referer headers were found to break downloads from
sourceforge.net, causing html pages to appear instead of tarballs.
if a website does need them, they can be added as needed via hget's -r
flag, or added to mothra.
reverts commits 67f536d20329 and 6d999c39a9f0
Once a second rebalance() is called on cpu0 to adjust priorities,
so cpu-bound processes won't lock others out. However it was only
adjusting processes which were running on cpu0. This was observed
to lead to livelock, eg when a higher-priority process spin-waits
for a lock held by a lower priority one.
syntax: reboot!bootfile[!method...]
this echos bootfile to /dev/reboot, causing bootfile kernel
to be started.
when method is given, we first connect to the filesystem and
set bootargs so that bootfile can be loaded from the target
network or local fileserver.
note, when no bootfile is given, this causes the kernel to
reboot to bios.
the end condition port < offset+n could never become
false when offset truncated to 32 bit signed port is
negative. change the condition variables to unsigned
int.
msr's are not byte addressible, so advance reads by
one instead of 8.
Xpipefd wants the pipe descriptor to be closed in turfredir(), so
it pushes the redirection, but this breaks Xpopredir after normal
redirection. so we shuffle the Xpipefd redir to the bottom of the
stack.
- plumbsel()
- remove debug prints
- use smalloc() to convert to bytes
- fix spurious -1 close of plumb fd
- snarfsel()
- fix rune buffer leak in open error case
Ori Bernstein wrote:
> I finally got around to taking another shot at this vt patch. This change
> gets rid of implicit snarfing, and instead makes selection the way you
> select text for snarfing or plumbing. Select, then use a menu entry.
>
> It would probably be nice to have double click to expand the selection,
> rio-style, along with plumbing implicitly taking the current word, but
> that can be a separate patch.
>
> This change also punts on scrolling for simplicity -- it clears the
> selection instead of trying to handle the cases where the selection
> goes offscreen.
little amendments:
- fix line selection (point min/max inversion)
- clear selection when switching linesel/blocksel
- move selection on scroll
