Alexander Graf wrote:
We need the ability to control this on the qemu level rather than guest bios level. For example, once you enable the cpuid bit, then, strictly speaking, you lose the ability to live migrate across vendors.

Hum, so we could patch the bios to always try and activate svm when the cpuid bit is found and disable it (msr write) when not.

It needs to do this anyway in case it finds itself running on an Intel cpu or a pre-nested-svm kernel.

Then we could simply enable/disable the cpuid capability in qemu if we don't want it exposed.

Yes.

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

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