Subversion Repositories HelenOS

Rev

Go to most recent revision | Show changed files | Directory listing | RSS feed

Filtering Options

Rev Age Author Path Log message Diff
2134 6269 d 20 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 6304 d 18 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).		  
2106 6321 d 2 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 6325 d 2 h decky /trunk/kernel/ move ipc structures to ipc.h  
2089 6327 d 2 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2083 6333 d 2 h decky /trunk/kernel/ typedef elimination  
2082 6333 d 2 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6333 d 20 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2076 6336 d 3 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 6337 d 19 h jermar /trunk/ (c) versus (C)  
2068 6345 d 2 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2065 6351 d 17 h jermar /trunk/kernel/ Coding style fixes and formatting improvements.  
2056 6365 d 7 h jermar /trunk/kernel/arch/sparc64/include/ Fix mismatched byteswapping macros on sparc64.  
2054 6365 d 17 h jermar /trunk/kernel/ Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.

Improve framebuffer code.

Formatting and indentation fixes.		  
2048 6369 d 20 h jermar /trunk/ Formatting and indentation changes.  
2047 6371 d 18 h jermar /trunk/kernel/arch/sparc64/include/ Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation.		  
2046 6371 d 20 h jermar /trunk/kernel/arch/sparc64/include/ Another comment fix.  
2045 6371 d 20 h jermar /trunk/kernel/arch/sparc64/include/ Fix comment.  
2044 6371 d 21 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 6372 d 16 h jermar /trunk/kernel/arch/sparc64/ Remove old stuff.  

←Prev12Next→

Show All