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Rev Age Author Path Log message Diff
4337 5481 d 21 h svoboda /branches/dynload/ Merge changes in trunk up to r3741 to dynload.  
3448 5705 d 7 h svoboda /branches/dynload/ Merge latest trunk changes into dynload  
3403 5709 d 6 h svoboda /branches/dynload/ Merge latest trunk changes into dynload  
3191 5785 d 3 h svoboda /branches/dynload/ Merge latest trunk changes into dynload  
3156 5798 d 23 h svoboda /branches/dynload/kernel/generic/src/mm/ Separate page removal and insertion in as_area_change_flags() so that usage of old and new mapping cannot interleave.  
3153 5799 d 3 h svoboda /branches/dynload/ Merge latest trunk changes into dynload  
3149 5799 d 4 h svoboda /branches/dynload/ Merge trunk changes up to r3071 into dynload (broken)  
3129 5803 d 21 h svoboda /branches/dynload/ initial ia64 support in iloader (broken)  
2986 5824 d 1 h svoboda /branches/dynload/kernel/generic/src/mm/ Declare old_frame as uintptr_t instead of int  
2985 5824 d 2 h svoboda /branches/dynload/ Fix as_area_change_flags() and use it in elf_loader.c  
2984 5824 d 3 h svoboda /branches/dynload/ Add as_area_change_flags() syscall and libc wrapper. Implementation limited to non-shared areas of anonymous memory.  
2927 5831 d 7 h decky /branches/dynload/ added dynload branch  
2745 5909 d 5 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings		  
2647 5981 d 22 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 6060 d 6 h jermar /trunk/kernel/generic/ Rename as_get_size() to as_area_get_size() and add a doxygen comment.  
2183 6237 d 1 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 18 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 6245 d 17 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 6246 d 22 h jermar /trunk/kernel/generic/src/mm/ Coding style and indentation fixes.  
2126 6289 d 18 h decky /trunk/kernel/ small cleanup, more work coming  

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