| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 3596 |
5653 d 17 h |
svoboda |
/branches/tracing/kernel/generic/src/mm/ |
Update obsolete comment. |
|
| 3431 |
5717 d 16 h |
svoboda |
/branches/tracing/kernel/ |
Add configuration option CONFIG_UDEBUG to compile udebug in the kernel or not. |
|
| 3425 |
5718 d 3 h |
svoboda |
/branches/tracing/ |
Merge latest trunk changes into tracing (broken) |
|
| 3424 |
5718 d 15 h |
svoboda |
/branches/tracing/ |
Merge trunk changes up to r3180 into tracing |
|
| 3127 |
5815 d 15 h |
svoboda |
/branches/tracing/kernel/generic/src/ |
Fix rounding error in as_debug_write() - prevent panic when writing on page boundary |
|
| 3036 |
5824 d 20 h |
svoboda |
/branches/tracing/kernel/generic/ |
Make sure area written by debugger is private and anonymous by copying it, if necessary. (Not atomic atm) |
|
| 3013 |
5829 d 4 h |
svoboda |
/branches/tracing/kernel/generic/ |
Bypass area write-protection for udebug memory writes. |
|
| 3011 |
5830 d 15 h |
svoboda |
/branches/tracing/ |
Merged latest trunk changes to tracing |
|
| 2787 |
5890 d 21 h |
decky |
/branches/tracing/ |
add dynamic linking, debugging and tracing branch |
|
| 2745 |
5920 d 1 h |
decky |
/trunk/ |
code cleanup (mostly signed/unsigned)
allow extra compiler warnings |
|
| 2725 |
5940 d 22 h |
decky |
/trunk/kernel/ |
remove config.memory_size, get_memory_size() and memory_init.{c|d}
the amount of available memory can be calculated from the sizes of the zones
add FRAMES2SIZE, SIZE2KB and SIZE2MB functions/macros (code readability) |
|
| 2712 |
5945 d 23 h |
decky |
/trunk/kernel/ |
prettyprint output |
|
| 2647 |
5992 d 18 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Fix a bug in anonymous address space area sharing. Call the backend's share
function only if the source area is not already shared. Otherwise increment the
sh_info refcount. Without this fix, the kernel will try to recreate the pagemap
if three and more address space areas attempt to share the same data. |
|
| 2556 |
6071 d 2 h |
jermar |
/trunk/kernel/generic/ |
Rename as_get_size() to as_area_get_size() and add a doxygen comment. |
|
| 2467 |
6178 d 19 h |
jermar |
/trunk/ |
Improve comments for arch-specific implementations of hierarchical
4-level page tables. Improve formatting. |
|
| 2222 |
6244 d 16 h |
decky |
/trunk/kernel/ |
map kernel pages explicitly as writable (this solves compatibility issues with Intel Core 2)
make VESA framebuffer initialization more robust |
|
| 2183 |
6247 d 21 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 15 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. |
|
| 2141 |
6256 d 13 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 |
6257 d 17 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. |
|