Alexander Graf wrote:
Current AMD CPUs support masking of CPUID bits. Using this functionality,
a VMM can limit what features are exposed to the guest, even if it's not
using SVM/VMX.
While I'm not aware of any open source hypervisor that uses these MSRs
atm, VMware ESX does and patches exist for Xen, where trapping CPUID is
non-trivial.
This patch implements emulation for this masking, which is pretty trivial
because we're intercepting CPUID anyways.
Because it's so simple and can be pretty effective, I put it into the
generic code paths, so VMX benefits from it as well.
Missing save/restore support.
Note that Intel has similar functionality, called FlexMigration IIRC,
likely using different MSRs.
--
error compiling committee.c: too many arguments to function
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
