| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2134 |
6338 d 6 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. |
|
| 2129 |
6373 d 5 h |
jermar |
/trunk/ |
Fix small problem in sparc64 port.
Bump version to 0.2.0.4 (Sunset). |
|
| 2106 |
6389 d 12 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. |
|
| 2105 |
6393 d 13 h |
decky |
/trunk/kernel/ |
move ipc structures to ipc.h |
|
| 2089 |
6395 d 12 h |
decky |
/trunk/ |
huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes |
|
| 2083 |
6401 d 12 h |
decky |
/trunk/kernel/ |
typedef elimination |
|
| 2082 |
6401 d 12 h |
decky |
/trunk/ |
__asm__ __volatile__ -> asm volatile |
|
| 2079 |
6402 d 7 h |
decky |
/trunk/kernel/ |
remove some typedefs in favor of anonymous structures |
|
| 2076 |
6404 d 13 h |
jermar |
/trunk/kernel/ |
Beat the implicit illegal virtual alias created by reusing userspace frames.
In the anonymous and ELF backends, if the architecture has virtually indexed D-cache,
selectively flush cachelines belonging to the frame being freed.
This fixes Ticket #20. |
|
| 2071 |
6406 d 5 h |
jermar |
/trunk/ |
(c) versus (C) |
|
| 2068 |
6413 d 12 h |
jermar |
/trunk/kernel/ |
Formatting and indentation fixes. |
|
| 2065 |
6420 d 3 h |
jermar |
/trunk/kernel/ |
Coding style fixes and formatting improvements. |
|
| 2056 |
6433 d 17 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
Fix mismatched byteswapping macros on sparc64. |
|
| 2054 |
6434 d 3 h |
jermar |
/trunk/kernel/ |
Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.
Improve framebuffer code.
Formatting and indentation fixes. |
|
| 2048 |
6438 d 6 h |
jermar |
/trunk/ |
Formatting and indentation changes. |
|
| 2047 |
6440 d 4 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation. |
|
| 2046 |
6440 d 6 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
Another comment fix. |
|
| 2045 |
6440 d 6 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
Fix comment. |
|
| 2044 |
6440 d 7 h |
jermar |
/trunk/kernel/arch/sparc64/ |
On sparc64's tick interrupt, adjust the TICK_COMPARE register instead of the TICK
register. The TICK register now increments linearily and can be used by the get_cycle()
function. |
|
| 2038 |
6441 d 3 h |
jermar |
/trunk/kernel/arch/sparc64/ |
Remove old stuff. |
|
| 2037 |
6441 d 3 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
Backout change from revision 2034.
sparc64 is not yet ready for get_cycle(). |
|
| 2034 |
6441 d 11 h |
jermar |
/trunk/kernel/arch/sparc64/include/ |
get_cycle() for sparc64. |
|
| 2025 |
6443 d 2 h |
jermar |
/trunk/ |
Coding style fixes. |
|
| 2023 |
6443 d 6 h |
decky |
/trunk/kernel/arch/ |
add dummy cycle.h |
|
| 2015 |
6445 d 5 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 |
6450 d 4 h |
jermar |
/trunk/kernel/ |
Initial support for handling illegal virtual aliases on sparc64. |
|
| 2008 |
6452 d 5 h |
jermar |
/trunk/kernel/arch/sparc64/ |
Add dcache_flush() function that flushes D-Cache on sparc64. |
|
| 2007 |
6453 d 3 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. |
|
| 2003 |
6454 d 10 h |
decky |
/trunk/kernel/arch/ |
cleanup endian conversion macros |
|
| 1984 |
6465 d 5 h |
jermar |
/trunk/kernel/arch/sparc64/ |
sparc64 work:
- untested support for Psycho PCI controller |
|
| 1978 |
6467 d 5 h |
jermar |
/trunk/ |
sparc64 code to support physical memory that starts on non-zero addresses.
Still needs to be tested on systems with such setup. |
|
| 1976 |
6473 d 11 h |
jermar |
/trunk/kernel/arch/sparc64/ |
sparc64 context does not have to include the CLEANWIN register. |
|
| 1954 |
6489 d 4 h |
jermar |
/trunk/ |
Minor changes. Some coding style fixes and also a type (tee vs. tree).
One AS -> as change. |
|
| 1949 |
6493 d 12 h |
jermar |
/trunk/kernel/arch/ |
Remove notes about automatically generated context_offset.h
and replace it with a proper copyright notice. |
|
| 1948 |
6493 d 15 h |
jermar |
/trunk/kernel/ |
Remove broken, outdated and unused gencontext.c utilities. |
|
| 1946 |
6496 d 3 h |
jermar |
/trunk/kernel/arch/sparc64/ |
sparc64 work.
- Improve panic screen on data_access_exception
by dumping contents of DSFSR and DSFAR.
- Change the FHC enable interrupt code to only
set the IMAP_V bit. |
|
| 1942 |
6497 d 5 h |
jermar |
/trunk/ |
Convert ia64 to the new IRQ and notification scheme. |
|
| 1921 |
6501 d 6 h |
jermar |
/trunk/kernel/ |
Changes in ns16550 and z8530 drivers.
Add some stuff for IRQ notifications to irq_t. |
|
| 1917 |
6506 d 6 h |
jermar |
/trunk/ |
sparc64 work:
- hw_map() can now support up to 8M requests
- CPU stacks are now locked in DTLB of the respective processor
- kernel in the boot phase no longer relies on the stack provided by OpenFirmware
- instead of of doing FLUSHW during kernel startup, simply set the
window state registers to the wanted state
- NWINDOW -> NWINDOWS
- Add/fix some comments and copyrights. |
|
| 1915 |
6507 d 5 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. |
|