This stubs checks in SvcCreateThread and SvcSetProcessIdealProcessor
that applied when creating threads on core2 and core3. This allows
non-sysmodules to create threads on core3.
Please note, core2 access was already being automatically granted to
3dsx apps for a long time (this is controlled through a kernel flag),
and other apps that needed it had that flag too.
This commit thus changes nothing for all these applications.
Do not create threads on core3 unless you know exactly what you're doing.
On N3DS, gsp (GPU sysmodule) depends on qtm (head-tracking sysmodule) which
runs many threads at very high priority on core3. Running code that needs the
GPU (including printf) on core3 can thus result in thread starvation /
deadlock.
If you just need an extra application core, just use core2 as it is intended
for that exact purpose and is by default completely idle.
Closes#1668
This is mostly a libctru bug (well, sort of).
This can only happen to built-in sysmodules, and to
processes waiting for err:f, that fail to obtain
handles through svcConnectToPort first try; and only
prior to 11.0.
Prior to fw 11.0, kernel didn't zero-initialize output
handles, and thus the output handle gets filled with
junk (leaked kernel stack data) in case of failure.
Libctru does not account for this, and closes such
handles anyway (in srvInit, errfInit, and possibly
more).
The problem is that, in our case, that garbage was
equal to 0x8000, actually a valid handle, in fact
the first handle to be created (and not closed) in
a process... a handle to KAddressArbiter.
Accidentally closing this handle resulted in one or
more KIPs spin-waiting and starving core1, resulting
in an inability to boot.
We fix this simply by replicating what recent k11 does,
in kext (for svcConnectToPort). For srvGetServiceHandle,
add two layers of safety.
- Add support for saving screen filters color temperature and NTP timezone offset (you still need to go to misc->save config)
- some advanced options moved to "in ini file only"; "patch games" is now enabled by default
- ntp: fix support for UTC+12 to +14
- remove deprecated custom svc 0x2e
