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2183 6379 d 7 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 6384 d 1 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2142 6387 d 8 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2128 6431 d 4 h jermar /trunk/ Add arm32 architecture. The 32 suffix is used to specify that 16-bit Thumb
instructions are not used. The arm32 code is mostly composed of placeholders
that need to be replaced by real implementation. So far, the arm32 tree
only compiles. If run under GXEmul simulator, an infinit loop at the
kernel entry point will be entered.
 
2126 6432 d 1 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6432 d 3 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2124 6432 d 5 h decky /trunk/kernel/generic/ implement simple realloc()  
2122 6438 d 8 h decky /trunk/kernel/generic/ explicit typecast, fix signed/unsigned comparison  
2120 6438 d 8 h decky /trunk/kernel/generic/include/syscall/ specify syscall handler arguments  
2109 6439 d 12 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.
 
2107 6440 d 2 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 6440 d 10 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.
 
2105 6444 d 11 h decky /trunk/kernel/ move ipc structures to ipc.h  
2103 6445 d 3 h decky /trunk/kernel/generic/include/ move timeout_t to timeout.h
move other helper types to thread.h
 
2098 6445 d 5 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2096 6445 d 5 h decky /trunk/kernel/generic/include/ move thread_t to thread.h  
2094 6445 d 6 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2093 6445 d 6 h decky /trunk/kernel/ spinlock extern declaration macro  
2092 6445 d 7 h decky /trunk/kernel/generic/include/ move cpu_t to cpu.h  
2090 6446 d 6 h decky /trunk/kernel/generic/include/proc/ cleanup garbage  

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