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Rev Age Author Path Log message Diff
4692 5555 d 3 h svoboda /branches/tracing/ Merge trunk changes up to r4686.  
4377 5655 d 3 h svoboda /branches/tracing/ Merge latest trunk changes to tracing. (i.e. revs 3684:4374, huge). This time hopefully the real thing.  
3425 5892 d 13 h svoboda /branches/tracing/ Merge latest trunk changes into tracing (broken)  
3424 5893 d 0 h svoboda /branches/tracing/ Merge trunk changes up to r3180 into tracing  
3011 6005 d 1 h svoboda /branches/tracing/ Merged latest trunk changes to tracing  
2787 6065 d 6 h decky /branches/tracing/ add dynamic linking, debugging and tracing branch  
2745 6094 d 11 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2647 6167 d 4 h jermar /trunk/kernel/generic/src/mm/ Fix a bug in anonymous address space area sharing. Call the backend's share
function only if the source area is not already shared. Otherwise increment the
sh_info refcount. Without this fix, the kernel will try to recreate the pagemap
if three and more address space areas attempt to share the same data.
 
2467 6353 d 5 h jermar /trunk/ Improve comments for arch-specific implementations of hierarchical
4-level page tables. Improve formatting.
 
2141 6430 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 6432 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.
 
2132 6433 d 10 h jermar /trunk/kernel/generic/src/mm/ Fix coding style in the address space area backends.  
2089 6489 d 9 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2076 6498 d 10 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 6500 d 2 h jermar /trunk/ (c) versus (C)  
2000 6550 d 11 h decky /trunk/kernel/ move files to more proper locations  
1787 6690 d 4 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6697 d 5 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1760 6708 d 6 h palkovsky /kernel/trunk/ Changed interface of frame_alloc/free to use address of frame instead of the pfn.
This makes it impossible to use >4GB of memory on 32-bit machines, but who cares...
 
1757 6711 d 10 h jermar /kernel/trunk/ Cleanup of comments.  

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