Hello, I am trying to understand the causes of the vcpu xstate restore error during live migration. I get the following error during live migration:
xc: error: Failed to set vcpu0's xsave info (22 = Invalid argument): Internal error I was able to locate the failure point to the file xen/arch/x86/domctl.c with the following check. if ( evc -> size < PV_XSAVE_HDR_SIZE || evc -> size > PV_XSAVE_SIZE ( xfeature_mask ) ) goto vcpuextstate_out ; I know this is related to the number of xstates handled by the source server. Please can someone explain to me how these states are computed? I earlier thought it was simply the number xsave dependent features on the CPU but it seems to be more than that. Thanks in advance. Caleb
