Re: [PATCH 00/12] SEV Live Migration Patchset.

[Paolo Bonzini]

On 19/03/20 17:18, Ashish Kalra wrote:
>>> For the second case, we have been discussing this internally,
>>> and one option is to extend the KVM capabilites/feature bits to check for this ?
>> You could extend the hypercall to completely block live migration (e.g.
>> a0=a1=~0, a2=0 to unblock or 1 to block).  The KVM_GET_PAGE_ENC_BITMAP
>> ioctl can also return the blocked/unblocked state.
>>
> Currently i have added a new KVM para feature
> "KVM_FEATURE_SEV_LIVE_MIGRATION" to indicate host support for the SEV
> live migration feature and a custom KVM MSR "MSR_KVM_SEV_LIVE_MIG_EN"
> for the guest to enable SEV live migration. The MSR also has other
> flags for future SEV live migration extensions.

Ok, that would be fine too.  Thanks!

Paolo