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Rev Age Author Path Log message Diff
3386 5790 d 6 h decky /branches/network/ add new network branch (copy of current trunk)  
3379 5793 d 14 h jermar /trunk/kernel/arch/sparc64/include/ Add the missing preemption_disable() call to sparc64 atomic_lock_arch().
Thanks to Pavel Rimsky for noticing this.
 
3233 5828 d 8 h decky /trunk/ remove dummy page coloring facility, which is currenty not used  
3145 5870 d 15 h jermar /trunk/kernel/arch/sparc64/include/ On sparc64, when the operand to the FLUSH instruction doesn't matter, the
instruction's semantics is to flush the pipeline.
 
3134 5871 d 13 h jermar /trunk/kernel/arch/ Add smc_coherence_block().  
3133 5872 d 2 h jermar /trunk/kernel/arch/ Add smc_coherence() macro to all architectures.
So far, only amd64, ia32, ia64 and sparc64 are implemented.
 
3104 5879 d 15 h svoboda /trunk/kernel/ Declare arguments for memstr.h operations as pointers instead of uintptr_t.  
3071 5882 d 8 h decky /trunk/kernel/ reflect changes in generic code
proper formatting directives
coding style
 
3070 5882 d 8 h decky /trunk/kernel/arch/ introduce portable formatting directives
remove common types
 
2860 5931 d 3 h cejka /trunk/ Context handling unified for sparc64.  
2797 5943 d 3 h jermar /trunk/kernel/ Each architecture should only announce its endianity.
The conversion macros should be defined only once.
 
2794 5944 d 3 h jermar /trunk/kernel/ Add macros for byte swapping of uint16_t's.  
2725 6000 d 9 h decky /trunk/kernel/ remove config.memory_size, get_memory_size() and memory_init.{c|d}
the amount of available memory can be calculated from the sizes of the zones
add FRAMES2SIZE, SIZE2KB and SIZE2MB functions/macros (code readability)
 
2721 6001 d 9 h decky /trunk/kernel/ convert e820list to a generic physmem command  
2610 6082 d 7 h jermar /trunk/ Support for six syscall arguments for sparc64.
There is a minor stability issue which needs to be fixed (kernel panics upon entering kconsole from the
console task).
 
2510 6154 d 3 h jermar /trunk/kernel/ Experimental support for the cgsix framebuffer, which is found on old Ultra 1
worksations, and the SBUS bus and devices. Not tested.
 
2272 6293 d 5 h jermar /trunk/kernel/ Indentation and formatting fixes.  
2231 6303 d 7 h jermar /trunk/kernel/arch/sparc64/ Fix a nasty bug in the TLB miss handlers on sparc64.
After we no longer lock the kernel stack in the DTLB,
there is a real danger of nested DTLB misses. The nested
miss can very easily clobber the DTLB Tag Access register.
Therefore, the original miss may not read this register, but
it has to receive its value as an argument. The argument
value is saved in the trap table when it is guaranteed that
the nested TLB miss will not occur.
 
2216 6305 d 3 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2143 6315 d 7 h jermar /trunk/kernel/arch/sparc64/include/ Remove unneeded enum member.  
2141 6315 d 23 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 6317 d 3 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 6352 d 2 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).
 
2106 6368 d 10 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 6372 d 10 h decky /trunk/kernel/ move ipc structures to ipc.h  
2089 6374 d 10 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2083 6380 d 9 h decky /trunk/kernel/ typedef elimination  
2082 6380 d 10 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6381 d 4 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2076 6383 d 11 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 6385 d 2 h jermar /trunk/ (c) versus (C)  
2068 6392 d 10 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2065 6399 d 1 h jermar /trunk/kernel/ Coding style fixes and formatting improvements.  
2056 6412 d 14 h jermar /trunk/kernel/arch/sparc64/include/ Fix mismatched byteswapping macros on sparc64.  
2054 6413 d 1 h jermar /trunk/kernel/ Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.

Improve framebuffer code.

Formatting and indentation fixes.
 
2048 6417 d 4 h jermar /trunk/ Formatting and indentation changes.  
2047 6419 d 2 h jermar /trunk/kernel/arch/sparc64/include/ Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation.
 
2046 6419 d 4 h jermar /trunk/kernel/arch/sparc64/include/ Another comment fix.  
2045 6419 d 4 h jermar /trunk/kernel/arch/sparc64/include/ Fix comment.  
2044 6419 d 5 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.