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  1. Bug #1431473
  2. Comment #21

Comment 21 for bug 1431473

Revision history for this message
Stefan Bader (smb) wrote :

Ok, so 3.16 on 3.12 fails (there might be more but first failure exits) with:

MSR_IA32_VMX_EXIT_CTLS (0x0483) which is required to support at least
  VM_EXIT_SAVE_DEBUG_CONTROLS (=0x002)|
  VM_EXIT_HOST_ADDR_SPACE_SIZE (0x0200)
but evaluating the msr returns only support for
  VM_EXIT_HOST_ADDR_SPACE_SIZE

The requirement got introduced in 3.15 by:

KVM: vmx: Allow the guest to run with dirty debug registers

Right now I am not sure where this needs fixing (the older or the newer kernels). I better ask that upstream.