Subversion Repositories HelenOS

Rev

Go to most recent revision | Show changed files | Directory listing | RSS feed

Filtering Options

Rev Age Author Path Log message Diff
2184 6380 d 13 h decky /trunk/kernel/generic/src/lib/ add zetta (sextillion) prefix
make constants explicitly unsigned		  
2183 6381 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.		  
2182 6382 d 0 h jancik /branches/arm/kernel/arch/arm32/ Alf: Paging ... not tested  
2181 6383 d 3 h konopa /branches/fs/kernel/doc/ New author added  
2180 6383 d 5 h stepan /branches/arm/kernel/arch/arm32/include/ exception vector locations added  
2179 6383 d 5 h stepan /branches/arm/kernel/arch/arm32/ exception handlers installation & initialization routines  
2178 6383 d 10 h kebrt /branches/arm/kernel/arch/arm32/include/ istate structure added  
2177 6383 d 13 h stepan /branches/arm/kernel/arch/arm32/src/ arch/regutils.h changes reflected  
2176 6383 d 13 h stepan /branches/arm/kernel/arch/arm32/include/ status registers manipulation macros  
2175 6384 d 4 h jancik /branches/arm/kernel/arch/arm32/ Alf: Disable ASID support  
2174 6385 d 7 h kebrt /branches/arm/kernel/arch/arm32/include/ atomic_add added  
2173 6385 d 14 h kebrt /branches/arm/kernel/arch/arm32/ console added, does not work yet  
2172 6385 d 14 h kebrt /branches/arm/kernel/arch/arm32/src/ memcpy added  
2171 6385 d 14 h kebrt /branches/arm/kernel/arch/arm32/ memcpy added  
2170 6386 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.		  
2169 6386 d 2 h kebrt /branches/arm/kernel/arch/arm32/src/ debug print added  
2168 6386 d 2 h kebrt /branches/arm/kernel/arch/arm32/ context save/restore added  
2167 6386 d 2 h kebrt /branches/arm/kernel/arch/arm32/src/ debugging printf added  
2166 6386 d 2 h kebrt /branches/arm/kernel/arch/arm32/include/ context added  
2165 6386 d 2 h kebrt /branches/arm/boot/arch/arm32/loader/ indenting  

←Prev12Next→

Show All