KVM: PPC: Book3S: Add GET/SET_ONE_REG interface for VRSAVE

The VRSAVE register value for a vcpu is accessible through the
GET/SET_SREGS interface for Book E processors, but not for Book 3S
processors.  In order to make this accessible for Book 3S processors,
this adds a new register identifier for GET/SET_ONE_REG, and adds
the code to implement it.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index e43c6f14c225..26fc37355dcb 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -1834,6 +1834,7 @@ registers, find a list below:
   PPC   | KVM_REG_PPC_TCSCR     | 64
   PPC   | KVM_REG_PPC_PID       | 64
   PPC   | KVM_REG_PPC_ACOP      | 64
+  PPC   | KVM_REG_PPC_VRSAVE    | 32
   PPC   | KVM_REG_PPC_TM_GPR0   | 64
           ...
   PPC   | KVM_REG_PPC_TM_GPR31  | 64