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Rev Age Author Path Log message Diff
2222 6244 d 19 h decky /trunk/kernel/ map kernel pages explicitly as writable (this solves compatibility issues with Intel Core 2)
make VESA framebuffer initialization more robust
 
2221 6244 d 21 h decky /trunk/kernel/arch/ia32/src/boot/ fix typo in comment  
2220 6244 d 21 h decky /trunk/kernel/arch/ia32/src/boot/ check for PSE support, add error message on PSE not present
make initial mapping explicitly writeable, turn PAE explicitly off (just in case)
 
2219 6244 d 22 h decky /trunk/kernel/arch/amd64/src/boot/ add error message on no long mode support  
2218 6245 d 16 h decky /trunk/kernel/ support the possibility to send EOI or Interrupt Acknowledgement
prior to processing the interrupt
(this is essential on some architectures to prevent preemption deadlock)
 
2217 6245 d 17 h jermar /trunk/kernel/arch/ia32/src/smp/ On SMP amd64 and ia32 systems, release the irq->lock
before calling clock() from the interrupt handler.
This is important for maintaining kernel preemption
since no preemption can take place while a spinlock
is held.
 
2216 6245 d 20 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2211 6245 d 22 h decky /trunk/kernel/generic/src/synch/ reflect the renaming of printflock to printf_lock  
2210 6245 d 22 h decky /trunk/ use more useful values  
2208 6245 d 22 h decky /trunk/kernel/generic/ use spinlock only on console output, not other print functions
cleanup
 
2188 6247 d 2 h decky /trunk/ new user space testing framework (unfinished)  
2187 6247 d 3 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2185 6247 d 4 h decky /trunk/ rename ipcc to tester  
2184 6247 d 6 h decky /trunk/kernel/generic/src/lib/ add zetta (sextillion) prefix
make constants explicitly unsigned
 
2183 6248 d 0 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 6252 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.
 
2161 6254 d 21 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.
 
2144 6255 d 18 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix TSB size.  
2143 6256 d 0 h jermar /trunk/kernel/arch/sparc64/include/ Remove unneeded enum member.  
2142 6256 d 1 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  

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