| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2745 |
5922 d 8 h |
decky |
/trunk/ |
code cleanup (mostly signed/unsigned)
allow extra compiler warnings |
|
| 2647 |
5995 d 1 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 |
6073 d 9 h |
jermar |
/trunk/kernel/generic/ |
Rename as_get_size() to as_area_get_size() and add a doxygen comment. |
|
| 2183 |
6250 d 4 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 |
6254 d 21 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 |
6258 d 20 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 |
6260 d 1 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Coding style and indentation fixes. |
|
| 2126 |
6302 d 21 h |
decky |
/trunk/kernel/ |
small cleanup, more work coming |
|
| 2125 |
6303 d 0 h |
decky |
/trunk/ |
experimental support for Objective C
(disabled by default) |
|
| 2106 |
6311 d 6 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 |
6316 d 2 h |
decky |
/trunk/kernel/generic/ |
avoid conflict with potential keyword |
|
| 2089 |
6317 d 6 h |
decky |
/trunk/ |
huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes |
|
| 2087 |
6318 d 2 h |
jermar |
/trunk/kernel/ |
Indentaion and formatting changes even Martin will like :-) |
|
| 2071 |
6327 d 23 h |
jermar |
/trunk/ |
(c) versus (C) |
|
| 2069 |
6329 d 22 h |
jermar |
/trunk/ |
Improve formatting. |
|
| 2015 |
6366 d 23 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 |
6371 d 23 h |
jermar |
/trunk/kernel/ |
Initial support for handling illegal virtual aliases on sparc64. |
|
| 2007 |
6374 d 22 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 |
6410 d 22 h |
jermar |
/trunk/ |
Minor changes. Some coding style fixes and also a type (tee vs. tree).
One AS -> as change. |
|
| 1915 |
6429 d 0 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. |
|
| 1914 |
6429 d 5 h |
jermar |
/trunk/kernel/generic/ |
Add function for printing out info about address space. |
|
| 1891 |
6448 d 22 h |
jermar |
/trunk/kernel/ |
sparc64 work:
- Experimental support for TSB (Translation Storage Buffer). |
|
| 1890 |
6449 d 8 h |
jermar |
/trunk/ |
- Create a dedicated slab cache for as_t objects and switch from malloc/free to slab_alloc/slab_free for
them.
- Slightly fix and improve both the kernel and userspace atomic_add() on sparc64.
- More TSB work on the sparc64 front. |
|
| 1889 |
6450 d 0 h |
jermar |
/trunk/kernel/ |
Fix bug in mm/as.c:
- as_area_destroy() should not work with AS but as
sparc64 work:
- start implementing TSB support |
|
| 1851 |
6477 d 6 h |
jermar |
/trunk/kernel/ |
sparc64 work.
Define the istate structure.
Move the identity-mapping handler to assembly.
Make the preemptible handler more general so that TL=1 MMU exceptions can make use of it.
Little bit of formatting and indentation. |
|
| 1793 |
6515 d 8 h |
jermar |
/trunk/kernel/ |
Change hw_map() on sparc64 to use virtual addresses that are
beyond the end of physical memory. It is beneficial in two
ways: first, physical memory is no longer being wasted by
otherwise necessary calls to frame_alloc() and, second,
virtual addresses for devices are now correctly allocated
and do not overlap with the 4M TLB-locked mapping for
kernel text and data. |
|
| 1787 |
6518 d 1 h |
decky |
/ |
move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot |
|
| 1780 |
6525 d 3 h |
jermar |
/kernel/trunk/ |
Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.). |
|
| 1760 |
6536 d 4 h |
palkovsky |
/kernel/trunk/ |
Changed interface of frame_alloc/free to use address of frame instead of the pfn.
This makes it impossible to use >4GB of memory on 32-bit machines, but who cares... |
|
| 1757 |
6539 d 7 h |
jermar |
/kernel/trunk/ |
Cleanup of comments. |
|
| 1735 |
6541 d 9 h |
decky |
/kernel/trunk/ |
make kernel prints case consistent |
|
| 1705 |
6545 d 8 h |
cejka |
/kernel/trunk/ |
Added file with modules definitions and descriptions.
We are able to change modules order and their description in one place. |
|
| 1702 |
6546 d 5 h |
cejka |
/kernel/trunk/ |
Kernel doxygen comments updated. |
|
| 1594 |
6553 d 19 h |
jermar |
/kernel/trunk/generic/src/mm/ |
Never ever walk a B+tree as you destroy it. Or vice versa. |
|
| 1587 |
6554 d 2 h |
jermar |
/kernel/trunk/ |
task_destroy() implementation, fixes in as_destroy() and task_kill().
This is the first version of HelenOS that would perform complete cleanup leading from thread to destruction of address space. |
|
| 1544 |
6556 d 6 h |
palkovsky |
/kernel/trunk/generic/ |
Slightly better behaviour with caching on memory sharing. |
|
| 1495 |
6557 d 19 h |
jermar |
/kernel/trunk/ |
Remove three infinite loops introduced yesterday :-)
Make ia64 ready to load 5 ELF images. |
|
| 1483 |
6558 d 6 h |
jermar |
/kernel/trunk/generic/src/ |
Implement recursive function for deallocating the whole B+tree.
Make use of this function in address space management. |
|
| 1468 |
6559 d 3 h |
jermar |
/kernel/trunk/ |
Function for destroying address space for which there is no other reference in the kernel. |
|
| 1461 |
6559 d 6 h |
palkovsky |
/kernel/trunk/generic/ |
Slightly changed semantics of AS_AREA_SEND/RECV. |
|