[PATCH 2/2] KVM: SEV: Flush cache on non-coherent systems before RECEIVE_UPDATE_DATA

[Ashish Kalra]

From: Sean Christopherson <seanjc@xxxxxxxxxx>

Hello Paolo,

I am adding a SEV migration test as part of the KVM SEV selftests.

And while testing SEV migration with this selftest, i observed
cache coherency issues causing migration test failures, so really
need this patch to be added.

Tested-by: Ashish Kalra <ashish.kalra@xxxxxxx>