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Rev Age Author Path Log message Diff
2465 6172 d 16 h jermar /trunk/ Merge arm32 into trunk.  
2444 6180 d 8 h jermar /trunk/kernel/ First fixes for suncc support.
It is going to be a long way...		  
2183 6236 d 15 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 6241 d 9 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2142 6244 d 16 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2126 6289 d 9 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6289 d 11 h decky /trunk/ experimental support for Objective C
(disabled by default)		  
2124 6289 d 13 h decky /trunk/kernel/generic/ implement simple realloc()  
2122 6295 d 16 h decky /trunk/kernel/generic/ explicit typecast, fix signed/unsigned comparison  
2107 6297 d 10 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 6297 d 18 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 6302 d 14 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2093 6302 d 14 h decky /trunk/kernel/ spinlock extern declaration macro  
2089 6303 d 18 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2085 6309 d 17 h decky /trunk/kernel/ typedef elimination  
2083 6309 d 18 h decky /trunk/kernel/ typedef elimination  
2071 6314 d 11 h jermar /trunk/ (c) versus (C)  
2059 6337 d 20 h jermar /trunk/kernel/generic/ Improve indentation and formatting.  
2015 6353 d 11 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.		  
2009 6358 d 10 h jermar /trunk/kernel/ Initial support for handling illegal virtual aliases on sparc64.  

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