On 09.05.2011, at 13:20, Avi Kivity wrote: > On 05/09/2011 01:11 PM, Alexander Graf wrote: >> > >> > And not in main memory, either? >> >> Nope - storage keys are only accessible using special instructions. They're not in RAM (visible to a guest) :). >> > > Interesting, so where are they kept? An on-chip memory? That would limit the amount of main memory to that indexed by the chip. Extra off-chip memory? I'll leave the answer of this question to the real experts :). All I know is that the ISA defines special instructions to fetch them, so the question on where they are stored is "implementation dependent". In qemu for example, they are kept in an extra array that's just malloc'ed. Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
