KVM: PPC: Book3S HV nestedv2: Keep nested guest DEXCR in sync

The nestedv2 APIs has the guest state element defined for DEXCR
for the save-restore with L0. However, its ignored in the code.

The patch takes care of this for the DEXCR GSID.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/171759281060.1480.654592298305141881.stgit@linux.ibm.com

diff --git a/arch/powerpc/kvm/book3s_hv_nestedv2.c b/arch/powerpc/kvm/book3s_hv_nestedv2.c
index 342f583147709960f2c946f2f4b20898edca5f77..3879cae7d142f45dd634e957f5ed7c09ef524555 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv_nestedv2.c
+++ b/arch/powerpc/kvm/book3s_hv_nestedv2.c
@@ -193,6 +193,9 @@ static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb,
                case KVMPPC_GSID_DAWRX1:
                        rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.dawrx1);
                        break;
+               case KVMPPC_GSID_DEXCR:
+                       rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.dexcr);
+                       break;
                case KVMPPC_GSID_CIABR:
                        rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ciabr);
                        break;
@@ -445,6 +448,9 @@ static int gs_msg_ops_vcpu_refresh_info(struct kvmppc_gs_msg *gsm,
                case KVMPPC_GSID_DAWRX1:
                        vcpu->arch.dawrx1 = kvmppc_gse_get_u32(gse);
                        break;
+               case KVMPPC_GSID_DEXCR:
+                       vcpu->arch.dexcr = kvmppc_gse_get_u64(gse);
+                       break;
                case KVMPPC_GSID_CIABR:
                        vcpu->arch.ciabr = kvmppc_gse_get_u64(gse);
                        break;