tree cab0228bb6e8cc5c2638eb60fcdff4ac59573e3b
parent c89d52997cf4849a9ee16b5d2cf462d0cd137634
author David Gibson <david@gibson.dropbear.id.au> 1349720258 +0000
committer Alexander Graf <agraf@suse.de> 1351507554 +0100

target-ppc: Rework storage of VPA registration state

With PAPR guests, hypercalls allow registration of the Virtual Processor
Area (VPA), SLB shadow and dispatch trace log (DTL), each of which allow
for certain communication between the guest and hypervisor.  Currently, we
store the addresses of the three areas and the size of the dtl in
CPUPPCState.

The SLB shadow and DTL are variable sized, with the size being retrieved
from within the registered memory area at the hypercall time.  This size
can later be overwritten with other information, however, so we need to
save the size as of registration time.  We already do this for the DTL,
but not for the SLB shadow, so this patch fixes that.

In addition, we change the storage of the VPA information to use fixed
size integer types which will make life easier for syncing this data with
KVM, which we will need in future.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>