KVM: PPC: Book3S HV: Add one-reg interface to virtual PTCR register
authorPaul Mackerras <paulus@ozlabs.org>
Mon, 8 Oct 2018 05:31:13 +0000 (16:31 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 9 Oct 2018 05:04:27 +0000 (16:04 +1100)
commit3032341853daf07c723084a086ebe7a9bdf8f90b
tree2e1fd56b937b7cbaad8023ee78f8c37c8b9cf585
parentf3c99f97a3cda284418af6e242e06b351b83f647
KVM: PPC: Book3S HV: Add one-reg interface to virtual PTCR register

This adds a one-reg register identifier which can be used to read and
set the virtual PTCR for the guest.  This register identifies the
address and size of the virtual partition table for the guest, which
contains information about the nested guests under this guest.

Migrating this value is the only extra requirement for migrating a
guest which has nested guests (assuming of course that the destination
host supports nested virtualization in the kvm-hv module).

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Documentation/virtual/kvm/api.txt
arch/powerpc/include/uapi/asm/kvm.h
arch/powerpc/kvm/book3s_hv.c