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Rev Age Author Path Log message Diff
4537 5622 d 0 h trochtova /branches/dd/ dd branch synchronized with trunk (revision 4536)  
4055 5720 d 21 h trochtova /branches/dd/ changes in trunk (rev 4054) merged into dd branch  
3022 6003 d 23 h decky /branches/dd/ device drivers branch  
2745 6095 d 22 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2647 6168 d 15 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 6246 d 23 h jermar /trunk/kernel/generic/ Rename as_get_size() to as_area_get_size() and add a doxygen comment.  
2183 6423 d 18 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 6428 d 12 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 6432 d 10 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 6433 d 15 h jermar /trunk/kernel/generic/src/mm/ Coding style and indentation fixes.  
2126 6476 d 11 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6476 d 14 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2106 6484 d 21 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 6489 d 16 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2089 6490 d 21 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2087 6491 d 16 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6501 d 13 h jermar /trunk/ (c) versus (C)  
2069 6503 d 12 h jermar /trunk/ Improve formatting.  
2015 6540 d 14 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 6545 d 13 h jermar /trunk/kernel/ Initial support for handling illegal virtual aliases on sparc64.  

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