Re: [PATCH 16/22] KVM: MMU: Track page fault data in struct vcpu

Avi Kivity
2010-05-04T09:50:50Z

On 05/04/2010 12:45 PM, Avi Kivity wrote:
>
>
> Just a silly bug. kvm_pdptr_read() can cause a guest memory read on
> svm, in this case with the mmu lock taken. I'll post something to fix
> it.

I guess this was not reported because most svm machines have npt, and
this requires npt=0 to trigger. Nonpae paging disables npt, so you were
hit. Interestingly, nsvm makes it more likely to appear, since npt on
i386+pae will need the pdptrs.

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error compiling committee.c: too many arguments to function