Subversion Repositories HelenOS

Rev

Go to most recent revision | Show changed files | Details | Compare with Previous | Blame | RSS feed

Filtering Options

Rev Age Author Path Log message Diff
2301 6364 d 22 h decky /trunk/uspace/fb/ copy proper portion of viewport on screen border
(fixes ticket #34)
 
2285 6374 d 1 h jermar /trunk/kernel/generic/src/proc/ Formatting and indentation fixes.  
2275 6378 d 17 h decky /trunk/kernel/generic/ add fancy uptime kconsole command  
2272 6379 d 17 h jermar /trunk/kernel/ Indentation and formatting fixes.  
2268 6380 d 16 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2267 6381 d 16 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix indentation.  
2266 6381 d 17 h jermar /trunk/kernel/arch/sparc64/src/mm/ Add few assertions to tsb.c and clean it up a little bit.  
2252 6383 d 15 h jermar /trunk/kernel/arch/sparc64/src/mm/ Move one MEMBAR instruction from a delay slot,
which is, due to SF Erratum #51, a potentionally
dangerous place for a MEMBAR to be.
 
2250 6383 d 15 h jermar /trunk/boot/ Fix ticket #31.  
2237 6387 d 14 h jermar /trunk/boot/arch/sparc64/silo/ Upgrade SILO to 1.4.13.  
2233 6389 d 15 h decky /trunk/kernel/arch/ use the hlt instruction more properly  
2232 6389 d 15 h decky /trunk/kernel/arch/mips32/src/ add support for halt/reboot in MSIM  
2231 6389 d 19 h jermar /trunk/kernel/arch/sparc64/ Fix a nasty bug in the TLB miss handlers on sparc64.
After we no longer lock the kernel stack in the DTLB,
there is a real danger of nested DTLB misses. The nested
miss can very easily clobber the DTLB Tag Access register.
Therefore, the original miss may not read this register, but
it has to receive its value as an argument. The argument
value is saved in the trap table when it is guaranteed that
the nested TLB miss will not occur.
 
2230 6389 d 19 h jermar /trunk/uspace/ Remove printf() serialization from thread1 test in tester.
The agreement among developers seems to be that:
- there _must_ be a futex to serialize access to printf()
- there _must_ be pseudo thread serialization in printf()
- the best place for this is vprintf(), the one that goes to console
 
2229 6389 d 22 h jermar /trunk/ Revert some of the changes introduced in revision 2209.
I think it is not correct to remove serialization of pseudo threads in printf_core.c.
With thread-level futex serialization, several pseudo threads running in one thread could easily deadlock
the task.

Add a dedicated futex serialization to thread1.c test only.
 
2228 6389 d 22 h jermar /trunk/kernel/arch/sparc64/src/ Fix ticket #28.
In switch_to_userspace(), the uarg argument is in %i2, not in %i3.
 
2227 6390 d 5 h decky /trunk/kernel/ start shutdown infrastructure  
2226 6390 d 6 h decky /trunk/contrib/conf/ MIPS boot image has grown  
2225 6390 d 6 h decky /trunk/kernel/arch/mips32/ the bss and common sections have to be in .data output section to be properly generated in the binary image
(this might break IRIX, but it is already unmaintaned)
 
2224 6390 d 12 h decky /trunk/kernel/generic/src/console/ detach joined thread  
2223 6390 d 12 h decky /trunk/kernel/generic/src/ add mcall0 command (calling a function on each CPU)  
2222 6390 d 15 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 6390 d 16 h decky /trunk/kernel/arch/ia32/src/boot/ fix typo in comment  
2220 6390 d 16 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 6390 d 18 h decky /trunk/kernel/arch/amd64/src/boot/ add error message on no long mode support  
2218 6391 d 12 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 6391 d 13 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 6391 d 16 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2211 6391 d 17 h decky /trunk/kernel/generic/src/synch/ reflect the renaming of printflock to printf_lock  
2210 6391 d 18 h decky /trunk/ use more useful values  
2209 6391 d 18 h decky /trunk/uspace/ use futex instead of pthread serialization
synchronize only output to stdout
cleanup
 
2208 6391 d 18 h decky /trunk/kernel/generic/ use spinlock only on console output, not other print functions
cleanup
 
2193 6392 d 21 h decky /trunk/uspace/tester/ reimplement all tests from original ipcc
(cleanup needed)
 
2192 6392 d 21 h decky /trunk/uspace/libc/arch/sparc64/include/ fix uspace atomic_add according kernel code  
2188 6392 d 22 h decky /trunk/ new user space testing framework (unfinished)  
2187 6392 d 23 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2186 6392 d 23 h decky /trunk/uspace/tester/ rename ipcc.c to tester.c  
2185 6392 d 23 h decky /trunk/ rename ipcc to tester  
2184 6393 d 1 h decky /trunk/kernel/generic/src/lib/ add zetta (sextillion) prefix
make constants explicitly unsigned
 
2183 6393 d 20 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.