[Qemu-devel] [PATCH v4 2/2] spapr: Fix migration of Radix guests

[Bharata B Rao <bharata@linux.vnet.ibm.com>]

Fix migration of radix guests by ensuring that we issue
KVM_PPC_CONFIGURE_V3_MMU for radix case post migration.

Reported-by: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
---
 hw/ppc/spapr.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index b589ed4..3f66a93 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1445,6 +1445,18 @@ static int spapr_post_load(void *opaque, int version_id)
         err = spapr_rtc_import_offset(&spapr->rtc, spapr->rtc_offset);
     }
 
+    if (spapr->patb_entry) {
+        PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
+        bool radix = !!(spapr->patb_entry & PATBE1_GR);
+        bool gtse = !!(cpu->env.spr[SPR_LPCR] & LPCR_GTSE);
+
+        err = kvmppc_configure_v3_mmu(cpu, radix, gtse, spapr->patb_entry);
+        if (err) {
+            error_report("Process table config unsupported by the host");
+            return -EINVAL;
+        }
+    }
+
     return err;
 }
 
-- 
2.7.4