Messages in this thread | | | Subject | Re: [PATCH] kvm: x86: fix RSM when PCID is non-zero | From | Paolo Bonzini <> | Date | Thu, 21 Dec 2017 17:53:47 +0100 |
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On 21/12/2017 17:37, Christopherson, Sean J wrote: >> Out of curiosity, has anyone ever tested RSM returning to PAE mode? I >> *think* it's supposed to restore the PDPTR registers directly rather >> than reloading them from the memory pointed to by CR3, and it doesn't >> look like the new or old code does it. > Yes, PDPTRs are saved/loaded to/from SMRAM, at least on Intel hardware.
KVM follows the AMD manual, since it's got a more complete description of SMRAM, and it doesn't show the PDPTRs (nor any reserved area large enough to hold them).
Thanks,
Paolo
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