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(root)/trunk/kernel/arch/sparc64/src/mm/tlb.c @ 3770 – Rev 2231
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Last modification
- Rev 2231 – 6233 d 10 h
- Author: jermar
- Log message:
- 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.
