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HelenOS
(root)
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tags
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0.4.0
/
kernel
/
arch
/
sparc64
/
src
/
mm
/
tlb.c
– Rev 3888
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3888
5684 d 19 h
jermar
/tags/0.4.0/
Tag 0.4.0.
3790
5721 d 22 h
svoboda
/trunk/kernel/
Make newlines in panic messages consistent. Add periods at end of messages so that it is obvious whether they are printed entirely.
3788
5722 d 11 h
svoboda
/trunk/kernel/
Unify newlines in fault_if_from_uspace() format strings. (Remove them and print newline automatically). Also start messages with caps.
3672
5755 d 14 h
jermar
/trunk/
Merge sparc branch to trunk.
2745
6037 d 22 h
decky
/trunk/
code cleanup (mostly signed/unsigned)
allow extra compiler warnings
2462
6303 d 13 h
jermar
/trunk/kernel/
Replace gcc-specific __FUNCTION__ with C99 __func__.
suncc's xregs=no%float can be used only on sparc64.
2231
6361 d 17 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.
2141
6374 d 10 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
6375 d 14 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.
2089
6432 d 20 h
decky
/trunk/
huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
2078
6439 d 17 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.
2071
6443 d 13 h
jermar
/trunk/
(c) versus (C)
2048
6475 d 15 h
jermar
/trunk/
Formatting and indentation changes.
2009
6487 d 12 h
jermar
/trunk/kernel/
Initial support for handling illegal virtual aliases on sparc64.
1996
6499 d 15 h
jermar
/trunk/kernel/
Add option to compile the sparc64 kernel without the TTE_CV bit support.
The bit is not used by default now.
Enabling it may theoretically lead to physical memory inconsistencies until code that
mitigates the problem is written.
1946
6533 d 11 h
jermar
/trunk/kernel/arch/sparc64/
sparc64 work.
- Improve panic screen on data_access_exception
by dumping contents of DSFSR and DSFAR.
- Change the FHC enable interrupt code to only
set the IMAP_V bit.
1905
6553 d 23 h
jermar
/trunk/kernel/arch/sparc64/src/
Small fixes.
The sparc64 kernel now compiles again even if not compiled with SMP support.
1891
6564 d 11 h
jermar
/trunk/kernel/
sparc64 work:
- Experimental support for TSB (Translation Storage Buffer).
1880
6572 d 12 h
jermar
/trunk/
Small improvements here and there.
1870
6577 d 13 h
jermar
/trunk/kernel/
Handle more sparc64 traps and improve handling of already handled traps.
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