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Rev Age Author Path Log message Diff
2134 6279 d 11 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 6314 d 10 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).
 
2106 6330 d 17 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 6334 d 17 h decky /trunk/kernel/ move ipc structures to ipc.h  
2089 6336 d 17 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2083 6342 d 17 h decky /trunk/kernel/ typedef elimination  
2082 6342 d 17 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6343 d 11 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2076 6345 d 18 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 6347 d 10 h jermar /trunk/ (c) versus (C)  
2068 6354 d 17 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2065 6361 d 8 h jermar /trunk/kernel/ Coding style fixes and formatting improvements.  
2056 6374 d 22 h jermar /trunk/kernel/arch/sparc64/include/ Fix mismatched byteswapping macros on sparc64.  
2054 6375 d 8 h jermar /trunk/kernel/ Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.

Improve framebuffer code.

Formatting and indentation fixes.
 
2048 6379 d 11 h jermar /trunk/ Formatting and indentation changes.  
2047 6381 d 9 h jermar /trunk/kernel/arch/sparc64/include/ Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation.
 
2046 6381 d 11 h jermar /trunk/kernel/arch/sparc64/include/ Another comment fix.  
2045 6381 d 11 h jermar /trunk/kernel/arch/sparc64/include/ Fix comment.  
2044 6381 d 12 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 6382 d 7 h jermar /trunk/kernel/arch/sparc64/ Remove old stuff.  

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