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Rev Age Author Path Log message Diff
2134 6388 d 13 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 6423 d 12 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).		  
2106 6439 d 19 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 6443 d 20 h decky /trunk/kernel/ move ipc structures to ipc.h  
2089 6445 d 19 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2083 6451 d 19 h decky /trunk/kernel/ typedef elimination  
2082 6451 d 19 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6452 d 14 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2076 6454 d 20 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 6456 d 12 h jermar /trunk/ (c) versus (C)  
2068 6463 d 19 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2065 6470 d 10 h jermar /trunk/kernel/ Coding style fixes and formatting improvements.  
2056 6484 d 0 h jermar /trunk/kernel/arch/sparc64/include/ Fix mismatched byteswapping macros on sparc64.  
2054 6484 d 10 h jermar /trunk/kernel/ Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.

Improve framebuffer code.

Formatting and indentation fixes.		  
2048 6488 d 13 h jermar /trunk/ Formatting and indentation changes.  
2047 6490 d 11 h jermar /trunk/kernel/arch/sparc64/include/ Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation.		  
2046 6490 d 13 h jermar /trunk/kernel/arch/sparc64/include/ Another comment fix.  
2045 6490 d 13 h jermar /trunk/kernel/arch/sparc64/include/ Fix comment.  
2044 6490 d 14 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 6491 d 10 h jermar /trunk/kernel/arch/sparc64/ Remove old stuff.  

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