Avi Kivity wrote:
Joerg Rodel wrote:
Meanwhile, I applied the patch, but I'm very worried about this.
Yes, we are also worried. Another question is why this only happens with
NPT. The SoftMMU code should also fail with shadow paging if there is a
bug.
Slightly different paths -- direct_map vs page_fault. Also, with npt,
all cpus will access the same pte that's being modified; without npt,
faults on the same page will result in different ptes being
instantiated, as each access will be from a different guest pte.
Maybe we should turn on the dirty bit in the instantiated ptes -- that
will reduce the processor's mucking about with them.
I meant the accessed bit. The dirty bit is always set, but the accessed
bit it not, due to a bug. Fixing it doesn't help, though.
--
error compiling committee.c: too many arguments to function
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