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the predicate registers. Even though the ITLB and DTLB interrupts happen often enough, this bug didn't do much harm. The reason is that the interrupt handlers only modify p1 and since this is a preserved (callee-saved) register it is hardly used in code generated by the compiler. Compilers use scratch registers by default. Changing the interrupt handlers to use p6 (ie a scratch register) proved that the bug was in fact fatal. |
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acpica | ||
compile | ||
conf | ||
ia32 | ||
ia64 | ||
include | ||
isa | ||
pci |