| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2218 |
6246 d 6 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 |
6246 d 7 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 |
6246 d 10 h |
decky |
/trunk/ |
make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls |
|
| 2211 |
6246 d 12 h |
decky |
/trunk/kernel/generic/src/synch/ |
reflect the renaming of printflock to printf_lock |
|
| 2210 |
6246 d 12 h |
decky |
/trunk/ |
use more useful values |
|
| 2208 |
6246 d 12 h |
decky |
/trunk/kernel/generic/ |
use spinlock only on console output, not other print functions
cleanup |
|
| 2188 |
6247 d 16 h |
decky |
/trunk/ |
new user space testing framework (unfinished) |
|
| 2187 |
6247 d 17 h |
decky |
/trunk/kernel/generic/ |
add syscall for getting current thread ID |
|
| 2185 |
6247 d 17 h |
decky |
/trunk/ |
rename ipcc to tester |
|
| 2184 |
6247 d 19 h |
decky |
/trunk/kernel/generic/src/lib/ |
add zetta (sextillion) prefix
make constants explicitly unsigned |
|
| 2183 |
6248 d 14 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 |
6253 d 7 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 |
6255 d 10 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 |
6256 d 8 h |
jermar |
/trunk/kernel/arch/sparc64/src/mm/ |
Fix TSB size. |
|
| 2143 |
6256 d 14 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
Remove unneeded enum member. |
|
| 2142 |
6256 d 15 h |
jermar |
/trunk/kernel/generic/include/mm/ |
Remove out of date comment. |
|
| 2141 |
6257 d 6 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. |
|
| 2134 |
6258 d 10 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 |
6258 d 11 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Coding style and indentation fixes. |
|
| 2132 |
6259 d 17 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Fix coding style in the address space area backends. |
|