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Rev Age Author Path Log message Diff
4692 5612 d 1 h svoboda /branches/tracing/ Merge trunk changes up to r4686.  
4377 5712 d 0 h svoboda /branches/tracing/ Merge latest trunk changes to tracing. (i.e. revs 3684:4374, huge). This time hopefully the real thing.  
3624 5881 d 8 h svoboda /branches/tracing/kernel/ Move debbuging-related as functions to a separate module.  
3596 5885 d 0 h svoboda /branches/tracing/kernel/generic/src/mm/ Update obsolete comment.  
3431 5948 d 23 h svoboda /branches/tracing/kernel/ Add configuration option CONFIG_UDEBUG to compile udebug in the kernel or not.  
3425 5949 d 10 h svoboda /branches/tracing/ Merge latest trunk changes into tracing (broken)  
3424 5949 d 22 h svoboda /branches/tracing/ Merge trunk changes up to r3180 into tracing  
3127 6046 d 22 h svoboda /branches/tracing/kernel/generic/src/ Fix rounding error in as_debug_write() - prevent panic when writing on page boundary  
3036 6056 d 3 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 6060 d 11 h svoboda /branches/tracing/kernel/generic/ Bypass area write-protection for udebug memory writes.  
2787 6122 d 3 h decky /branches/tracing/ add dynamic linking, debugging and tracing branch  
2745 6151 d 8 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2647 6224 d 1 h jermar /trunk/kernel/generic/src/mm/ Fix a bug in anonymous address space area sharing. Call the backend's share
function only if the source area is not already shared. Otherwise increment the
sh_info refcount. Without this fix, the kernel will try to recreate the pagemap
if three and more address space areas attempt to share the same data.
 
2556 6302 d 9 h jermar /trunk/kernel/generic/ Rename as_get_size() to as_area_get_size() and add a doxygen comment.  
2183 6479 d 4 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 6483 d 21 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.
 
2141 6487 d 20 h jermar /trunk/ The Ultimate Solution To Illegal Virtual Aliases.
It is better to avoid them completely than to fight them.
Switch the sparc64 port to 16K pages. The TLBs and TSBs
continue to operate with 8K pages only. Page tables and
other generic parts operate with 16K pages.

Because the MMU doesn't support 16K directly, each 16K
page is emulated by a pair of 8K pages. With 16K pages,
illegal aliases cannot be created in 16K D-cache.
 
2133 6489 d 1 h jermar /trunk/kernel/generic/src/mm/ Coding style and indentation fixes.  
2126 6531 d 21 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6532 d 0 h decky /trunk/ experimental support for Objective C
(disabled by default)
 

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