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2143 6295 d 20 h jermar /trunk/kernel/arch/sparc64/include/ Remove unneeded enum member.  
2141 6296 d 12 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.		  
2134 6297 d 16 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 6332 d 15 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).		  
2106 6348 d 22 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 6352 d 23 h decky /trunk/kernel/ move ipc structures to ipc.h  
2089 6354 d 22 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2083 6360 d 22 h decky /trunk/kernel/ typedef elimination  
2082 6360 d 23 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6361 d 17 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2076 6363 d 23 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 6365 d 15 h jermar /trunk/ (c) versus (C)  
2068 6372 d 22 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2065 6379 d 13 h jermar /trunk/kernel/ Coding style fixes and formatting improvements.  
2056 6393 d 3 h jermar /trunk/kernel/arch/sparc64/include/ Fix mismatched byteswapping macros on sparc64.  
2054 6393 d 14 h jermar /trunk/kernel/ Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.

Improve framebuffer code.

Formatting and indentation fixes.		  
2048 6397 d 17 h jermar /trunk/ Formatting and indentation changes.  
2047 6399 d 14 h jermar /trunk/kernel/arch/sparc64/include/ Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation.		  
2046 6399 d 16 h jermar /trunk/kernel/arch/sparc64/include/ Another comment fix.  
2045 6399 d 17 h jermar /trunk/kernel/arch/sparc64/include/ Fix comment.  

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