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Rev Age Author Path Log message Diff
2193 6319 d 0 h decky /trunk/uspace/tester/ reimplement all tests from original ipcc
(cleanup needed)
 
2192 6319 d 0 h decky /trunk/uspace/libc/arch/sparc64/include/ fix uspace atomic_add according kernel code  
2188 6319 d 1 h decky /trunk/ new user space testing framework (unfinished)  
2187 6319 d 2 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2186 6319 d 2 h decky /trunk/uspace/tester/ rename ipcc.c to tester.c  
2185 6319 d 2 h decky /trunk/ rename ipcc to tester  
2184 6319 d 4 h decky /trunk/kernel/generic/src/lib/ add zetta (sextillion) prefix
make constants explicitly unsigned
 
2183 6319 d 22 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 6324 d 16 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.
 
2161 6326 d 19 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix TSB bug during TSB refill.
When one wants to enable a TSB entry, he or she should set the
entry invalid bit to false, as opposed to setting it to true.
 
2160 6326 d 19 h decky /trunk/boot/arch/ remove duplicate dependency  
2144 6327 d 17 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix TSB size.  
2143 6327 d 23 h jermar /trunk/kernel/arch/sparc64/include/ Remove unneeded enum member.  
2142 6327 d 23 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2141 6328 d 15 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.
 
2139 6328 d 16 h decky /trunk/contrib/toolchain/ move to GCC 4.1.2, make scripts really host platform independent
remove orphaned libobjc
 
2138 6328 d 18 h decky /trunk/contrib/toolchain/ revert previous change (libobjc is actually HOST platform dependent)  
2134 6329 d 19 h jermar /trunk/kernel/ Reworked handling of illegal virtual aliases caused by frame reuse.
We moved the incomplete handling from backend's frame method to
backend's page_fault method. The page_fault method is the one that
can create an illegal alias if it writes the userspace frame using
kernel address with a different page color than the page to which is
this frame mapped in userspace. When we detect this, we do D-cache
shootdown on all processors (!!!).

If we add code that accesses userspace memory from kernel address
space, we will have to check for illegal virtual aliases at all such
places.

I tested this on a 4-way simulated E6500 and a real-world Ultra 5,
which has unfortunatelly only one processor.

This solves ticket #26.
 
2133 6329 d 19 h jermar /trunk/kernel/generic/src/mm/ Coding style and indentation fixes.  
2132 6331 d 2 h jermar /trunk/kernel/generic/src/mm/ Fix coding style in the address space area backends.  
2129 6364 d 18 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).
 
2128 6371 d 19 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.
 
2127 6372 d 5 h decky /trunk/kernel/generic/src/lib/ add forgotten implementation  
2126 6372 d 16 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6372 d 19 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2124 6372 d 20 h decky /trunk/kernel/generic/ implement simple realloc()  
2123 6378 d 23 h decky /trunk/kernel/generic/src/mm/ add forgotten unsigned  
2122 6378 d 23 h decky /trunk/kernel/generic/ explicit typecast, fix signed/unsigned comparison  
2121 6378 d 23 h decky /trunk/kernel/generic/src/mm/ remove anonymous structure, add static qualifier  
2120 6378 d 23 h decky /trunk/kernel/generic/include/syscall/ specify syscall handler arguments  
2119 6378 d 23 h decky /trunk/kernel/generic/src/syscall/ explicit typecast  
2118 6379 d 0 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2117 6379 d 0 h decky /trunk/kernel/generic/src/ddi/ explicit typecast  
2116 6379 d 0 h decky /trunk/kernel/generic/src/ddi/ explicit typecast  
2115 6379 d 0 h decky /trunk/kernel/generic/src/cpu/ fix signed/unsigned comparison  
2114 6379 d 0 h decky /trunk/kernel/generic/src/console/ explicit typecast  
2113 6379 d 2 h decky /trunk/kernel/generic/src/console/ explicit typecast, fix signed/unsigned comparison  
2112 6379 d 2 h decky /trunk/kernel/generic/src/adt/ explicit typecast, fix signed/unsigned comparison  
2111 6379 d 2 h decky /trunk/kernel/generic/src/adt/ fix signed/unsigned comparison  
2110 6379 d 18 h jermar /trunk/kernel/arch/ia64/ Minor cleanup in ia64.