| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2745 |
6104 d 15 h |
decky |
/trunk/ |
code cleanup (mostly signed/unsigned)
allow extra compiler warnings |
|
| 2647 |
6177 d 8 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 |
6255 d 16 h |
jermar |
/trunk/kernel/generic/ |
Rename as_get_size() to as_area_get_size() and add a doxygen comment. |
|
| 2183 |
6432 d 10 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 |
6437 d 4 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 |
6441 d 3 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. |
|
| 2133 |
6442 d 7 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Coding style and indentation fixes. |
|
| 2126 |
6485 d 4 h |
decky |
/trunk/kernel/ |
small cleanup, more work coming |
|
| 2125 |
6485 d 7 h |
decky |
/trunk/ |
experimental support for Objective C
(disabled by default) |
|
| 2106 |
6493 d 13 h |
jermar |
/trunk/kernel/ |
Merge as_t structure into one and leave the differring parts in as_genarch_t.
Indentation and formatting changes in header files. |
|
| 2094 |
6498 d 9 h |
decky |
/trunk/kernel/generic/ |
avoid conflict with potential keyword |
|
| 2089 |
6499 d 13 h |
decky |
/trunk/ |
huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes |
|
| 2087 |
6500 d 9 h |
jermar |
/trunk/kernel/ |
Indentaion and formatting changes even Martin will like :-) |
|
| 2071 |
6510 d 6 h |
jermar |
/trunk/ |
(c) versus (C) |
|
| 2069 |
6512 d 4 h |
jermar |
/trunk/ |
Improve formatting. |
|
| 2015 |
6549 d 6 h |
jermar |
/trunk/ |
Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.
Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.
Lots of coding style changes. |
|
| 2009 |
6554 d 5 h |
jermar |
/trunk/kernel/ |
Initial support for handling illegal virtual aliases on sparc64. |
|
| 2007 |
6557 d 4 h |
jermar |
/trunk/kernel/ |
Introduce page colors. So far, only sparc64 uses correct page color bits. Other architectures have a dummy define
specifying zero bits for a page color.
There is a new check of page color in as_area_share(). Because of lack of support for this in the userspace, the
check has been #ifef'ed out. |
|
| 1954 |
6593 d 5 h |
jermar |
/trunk/ |
Minor changes. Some coding style fixes and also a type (tee vs. tree).
One AS -> as change. |
|
| 1915 |
6611 d 6 h |
jermar |
/trunk/kernel/ |
A quote from from SPARC V9 specification:
The Y register is deprecated; it is provided only for compatibility with previous versions
of the architecture. It should not be used in new SPARC-V9 software. It is
recommended that all instructions that reference the Y register (i.e., SMUL,
SMULcc, UMUL, UMULcc, MULScc, SDIV, SDIVcc, UDIV, UDIVcc, RDY, and
WRY) be avoided. See the appropriate pages in Appendix A, “Instruction Definitions,”
for suitable substitute instructions.
Still gcc is generating code which uses Y and some of the instructions above.
This change modifies the preemptible_handler() to preserve the Y register
across preemption. |
|