While a CPU executes the idle thread, it receives no cross-CPU TLB flush
requests. Therefore, the TLB needs to get flushed when leaving the idle
thread to compensate for any missed flush requests.
Fixesssumpf/foc#9.
Don't apply those parts of the thread state returned by the Genode
exception handler which might have changed in the kernel in
the meantime.
Fixesssumpf/foc#8.
... since the SCU-control register does not exist (resverved area on Cortex-A15).
Setting this bit leads to second-level translation table faults on CPU1.
'Mem_unit::flush_dcache' takes void pointers as arguments, no need to take the
given void pointers ('start' and 'end') and transform them to
'Virt_addr(Address(x)' types. This breaks cache flushing in r56.
With this patch the comport are tried to read out from the BIOS Data Area
on x86 machines. The BDA Area are part of the first physical page and may
contain the non-default io ports of the comport.
When used together with 'bender' from the 'morbo' toolchain, even serial PCI
cards (also Intel's AMT Serial Over Line adapter) are detected automatically.
With this patch, the kernel fetches serial data also when the
'-serial_esc' option is not set.
To keep the patch minimally invasive, the 'serial ESC' functionality gets
enabled by default and the existence of the '-serial_esc' argument gets only
checked when an ESC character was received and the decision of entering the
kernel debugger or not needs to be made.
Fixesssumpf/foc#3.
When sigma0 runs on a lower priority than the rest of the threads in the system
it might come to the point that while answering a page fault or I/O memory area
request the timeslice of the caller (core-pager) gets fully consumed. As long as
other threads are still executable and don't block sigma0 won't do progress
anymore, because it runs at the lowest priority. This commit simply sets
sigma0's priority to the highest in the system.
Was: 'sigma0_prio.patch'
In sigma0 normally no answer tag to a request/fault is created. It
simply uses the message tag received with the request. This doesn't work out
when I/O ports are requested. This patch constructs an appropriate answer tag.
Moreover, we have to enable I/O port protection in the kernel configuration.
Was: 'sigma0_ioport.patch'
Increase the size of the JDB kernel object names buffer. The original size was
too small for some Genode scenarios and caused missing thread names in the
kernel debugger thread list.
Was: 'jdb_kobject_names.patch'
This patch enables the user land to use the CPU's single stepping mode on
x86_32 platforms. It is needed to enable the use of GDB monitor for
user-level debugging.
Was: 'foc_single_step_x86.patch'
The syscall l4_task_cap_equal almost returns false although the referenced
kernel-objects are equal. This patch changes the semantic of the syscall so that
whenever two capabilities refering the same kernel-object are compared it will
return true. Please refer to the discussion of the following mail thread:
http://www.mail-archive.com/l4-hackers@os.inf.tu-dresden.de/msg05162.html
Was 'foc_caps_equal.patch'
