Re: [PATCH v1 1/3] kvm: svm: Add support for additional SVM NPF error codes

From	Paolo Bonzini <pbonzini@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v1 1/3] kvm: svm: Add support for additional SVM NPF error codes
Date	2016-11-22 23:40 +0100
Message-ID	<sGrTk-4Sy-23@gated-at.bofh.it> (permalink)
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On 22/11/2016 23:15, Tom Lendacky wrote:
> > 2) what bit is set if the processor is reading the PDPTEs of a 32-bit
> > PAE guest?
>
> I believe that bit 33 will be set.  The PDPE's are considered guest
> tables and are read during a guest table walk (see APM vol2 section
> 15.25.10).  Note that this is slightly different than the bare-metal
> behavior of legacy PAE mode as APM describes. I'll try to test this
> and verify it.

No big deal, indeed it's a bit different from Intel which caches the
four PDPEs, but it's enough to know that bit 33 will be set.

Paolo

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Re: [PATCH v1 1/3] kvm: svm: Add support for additional SVM NPF error  codes Paolo Bonzini <pbonzini@redhat.com> - 2016-11-21 16:20 +0100
  Re: [PATCH v1 1/3] kvm: svm: Add support for additional SVM NPF error  codes Paolo Bonzini <pbonzini@redhat.com> - 2016-11-22 23:40 +0100

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