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Rev Age Author Path Log message Diff
3624 5646 d 16 h svoboda /branches/tracing/kernel/ Move debbuging-related as functions to a separate module.  
3431 5714 d 6 h svoboda /branches/tracing/kernel/ Add configuration option CONFIG_UDEBUG to compile udebug in the kernel or not.  
3425 5714 d 18 h svoboda /branches/tracing/ Merge latest trunk changes into tracing (broken)  
3036 5821 d 10 h svoboda /branches/tracing/kernel/generic/ Make sure area written by debugger is private and anonymous by copying it, if necessary. (Not atomic atm)  
3013 5825 d 19 h svoboda /branches/tracing/kernel/generic/ Bypass area write-protection for udebug memory writes.  
2787 5887 d 11 h decky /branches/tracing/ add dynamic linking, debugging and tracing branch  
2745 5916 d 16 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2556 6067 d 16 h jermar /trunk/kernel/generic/ Rename as_get_size() to as_area_get_size() and add a doxygen comment.  
2183 6244 d 11 h jermar /trunk/kernel/generic/ Continue to de-oversynchronize the kernel.
- replace as->refcount with an atomic counter; accesses to this
reference counter are not to be done when the as->lock mutex is held;
this gets us rid of mutex_lock_active();

Remove the possibility of a deadlock between TLB shootdown and asidlock.
- get rid of mutex_lock_active() on as->lock
- when locking the asidlock spinlock, always do it conditionally and with
preemption disabled; in the unsuccessful case, enable interrupts and try again
- there should be no deadlock between TLB shootdown and the as->lock mutexes
- PLEASE REVIEW !!!

Add DEADLOCK_PROBE's to places where we have spinlock_trylock() loops.
 
2170 6249 d 5 h jermar /trunk/kernel/ Simplify synchronization in as_switch().
The function was oversynchronized, which
was causing deadlocks on the address
space mutex.

Now, address spaces can only be switched
when the asidlock is held. This also protects
stealing of ASIDs. No other synchronization
is necessary.
 
2142 6252 d 12 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2126 6297 d 5 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6297 d 7 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2107 6305 d 6 h jermar /trunk/ When clock() is called by an external interrupt dispatched by the IRQ dispatcher,
no spinlock can be held or the kernel will not be preemptive. This fixes Ticket #24.

Formating and indentation fixes.
 
2106 6305 d 14 h jermar /trunk/kernel/ Merge as_t structure into one and leave the differring parts in as_genarch_t.

Indentation and formatting changes in header files.
 
2094 6310 d 10 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2093 6310 d 10 h decky /trunk/kernel/ spinlock extern declaration macro  
2089 6311 d 14 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2071 6322 d 7 h jermar /trunk/ (c) versus (C)  
2015 6361 d 7 h jermar /trunk/ Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.
 

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