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

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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.

--
error compiling committee.c: too many arguments to function

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