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Rev Age Author Path Log message Diff
2076 6363 d 14 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 6 h jermar /trunk/ (c) versus (C)  
2069 6367 d 4 h jermar /trunk/ Improve formatting.  
2059 6388 d 15 h jermar /trunk/kernel/generic/ Improve indentation and formatting.  
2052 6394 d 9 h decky /trunk/kernel/generic/src/mm/ pretty-print slabs  
2048 6397 d 7 h jermar /trunk/ Formatting and indentation changes.  
2035 6400 d 11 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2015 6404 d 6 h jermar /trunk/ Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.
 
2009 6409 d 5 h jermar /trunk/kernel/ Initial support for handling illegal virtual aliases on sparc64.  
2007 6412 d 4 h jermar /trunk/kernel/ Introduce page colors. So far, only sparc64 uses correct page color bits. Other architectures have a dummy define
specifying zero bits for a page color.

There is a new check of page color in as_area_share(). Because of lack of support for this in the userspace, the
check has been #ifef'ed out.
 
2000 6415 d 15 h decky /trunk/kernel/ move files to more proper locations  
1999 6415 d 15 h decky /trunk/ start RAM disk support  
1981 6425 d 14 h jermar /trunk/kernel/ Indentation, formatting and minor changes.  
1954 6448 d 5 h jermar /trunk/ Minor changes. Some coding style fixes and also a type (tee vs. tree).
One AS -> as change.
 
1950 6452 d 9 h jermar /trunk/kernel/ Indentation changes and coding style fixes in slab.c and slab.h.  
1915 6466 d 6 h jermar /trunk/kernel/ A quote from from SPARC V9 specification:

The Y register is deprecated; it is provided only for compatibility with previous versions
of the architecture. It should not be used in new SPARC-V9 software. It is
recommended that all instructions that reference the Y register (i.e., SMUL,
SMULcc, UMUL, UMULcc, MULScc, SDIV, SDIVcc, UDIV, UDIVcc, RDY, and
WRY) be avoided. See the appropriate pages in Appendix A, “Instruction Definitions,”
for suitable substitute instructions.

Still gcc is generating code which uses Y and some of the instructions above.
This change modifies the preemptible_handler() to preserve the Y register
across preemption.
 
1914 6466 d 12 h jermar /trunk/kernel/generic/ Add function for printing out info about address space.  
1904 6476 d 10 h jermar /trunk/kernel/ IPI/cross-call support for sparc64.
SMP on sparc64 is now fully supported.
 
1894 6485 d 4 h jermar /trunk/ Add balloc() (a.k.a boot allocator):
- balloc() only needs to know how to allocate memory.
- Memory allocated via balloc() is supposed to be passed to kernel and never freed by boot itself.
- make kernel aware of boot allocations

More work on OFW device tree:
- use balloc() to efficiently and safely allocate memory for the canonical copy of the device tree

sparc64 boot:
- pass OFW device tree root node pointer to kernel
 
1891 6486 d 4 h jermar /trunk/kernel/ sparc64 work:
- Experimental support for TSB (Translation Storage Buffer).
 

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