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Rev Age Author Path Log message Diff
2134 6276 d 10 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 6311 d 8 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).
 
2128 6318 d 10 h jermar /trunk/ Add arm32 architecture. The 32 suffix is used to specify that 16-bit Thumb
instructions are not used. The arm32 code is mostly composed of placeholders
that need to be replaced by real implementation. So far, the arm32 tree
only compiles. If run under GXEmul simulator, an infinit loop at the
kernel entry point will be entered.
 
2125 6319 d 9 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2110 6326 d 8 h jermar /trunk/kernel/arch/ia64/ Minor cleanup in ia64.  
2107 6327 d 8 h jermar /trunk/ When clock() is called by an external interrupt dispatched by the IRQ dispatcher,
no spinlock can be held or the kernel will not be preemptive. This fixes Ticket #24.

Formating and indentation fixes.
 
2106 6327 d 16 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 6331 d 16 h decky /trunk/kernel/ move ipc structures to ipc.h  
2101 6332 d 10 h decky /trunk/kernel/ fix signed/unsigned comparison and integer overflow  
2100 6332 d 11 h decky /trunk/kernel/ signed/unsigned comparison, explicit typecast  
2099 6332 d 11 h decky /trunk/kernel/arch/ia32/src/ explicit cast on pointer arithmetic  
2097 6332 d 11 h decky /trunk/kernel/arch/ia32/src/smp/ fix signed/unsigned comparison  
2095 6332 d 12 h decky /trunk/kernel/arch/ia32/src/smp/ fix signed/unsigned comparison  
2091 6333 d 12 h jermar /trunk/kernel/arch/sparc64/src/ Fix creating the kkbdpoll() kernel thread on sparc64 SMP machines.
This fixes Ticket #19.
 
2089 6333 d 16 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2087 6334 d 12 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2083 6339 d 16 h decky /trunk/kernel/ typedef elimination  
2082 6339 d 16 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6340 d 10 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2078 6340 d 12 h jermar /trunk/kernel/arch/sparc64/src/ When invalidating entire TLBs on sparc64, make sure to also invalidate any (locked) global entries.
This fixes Ticket #21.
Fix a comment in start.S stating that the kernel installs a global entry for itself. All entries installed by the kernel
are local to some memory context.
 
2076 6342 d 17 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 6344 d 9 h jermar /trunk/ (c) versus (C)  
2068 6351 d 16 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2067 6354 d 14 h jermar /trunk/kernel/ More formatting changes.  
2065 6358 d 7 h jermar /trunk/kernel/ Coding style fixes and formatting improvements.  
2064 6358 d 8 h vana /trunk/ SIMICS added as a simulator kernel runs on  
2060 6362 d 18 h jermar /trunk/kernel/arch/ia64/src/ Fix typo.  
2058 6370 d 18 h jermar /trunk/kernel/arch/sparc64/src/ Improve comments.  
2057 6371 d 20 h jermar /trunk/kernel/arch/ Fix all remaining mistmatches in width of byte swapping functions for ia64,
ppc32, ppc64, amd64, mips32 and ia32.
 
2056 6371 d 21 h jermar /trunk/kernel/arch/sparc64/include/ Fix mismatched byteswapping macros on sparc64.  
2055 6371 d 21 h jermar /trunk/kernel/arch/sparc64/src/ sparc64 work:
- No need to lock kernel stack and userspace window buffer into DTLB.
 
2054 6372 d 7 h jermar /trunk/kernel/ Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.

Improve framebuffer code.

Formatting and indentation fixes.
 
2049 6375 d 17 h jermar /trunk/kernel/arch/sparc64/src/ More formatting and indentation changes.  
2048 6376 d 10 h jermar /trunk/ Formatting and indentation changes.  
2047 6378 d 8 h jermar /trunk/kernel/arch/sparc64/include/ Convert sparc64 critical section barriers to RMO memory model.
More portable, no confusion from documentation.
 
2046 6378 d 10 h jermar /trunk/kernel/arch/sparc64/include/ Another comment fix.  
2045 6378 d 10 h jermar /trunk/kernel/arch/sparc64/include/ Fix comment.  
2044 6378 d 11 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.
 
2043 6378 d 11 h jermar /trunk/kernel/arch/sparc64/src/ Make the sparc64 kernel compile again.  
2038 6379 d 6 h jermar /trunk/kernel/arch/sparc64/ Remove old stuff.