[Qemu-devel] [PATCH] spapr: Print out extra hints when CAS negotiation of interrupt mode fails

[Greg Kurz]

Let's suggest to the user how the machine should be configured to allow
the guest to boot successfully.

Suggested-by: Satheesh Rajendran <address@hidden>
Signed-off-by: Greg Kurz <address@hidden>
---
 hw/ppc/spapr_hcall.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index 63a55614b83d..aae9fd2b3e6d 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -1646,12 +1646,12 @@ static target_ulong 
h_client_architecture_support(PowerPCCPU *cpu,
      */
     if (guest_xive) {
         if (spapr->irq->ov5 == SPAPR_OV5_XIVE_LEGACY) {
-            error_report("Guest requested unavailable interrupt mode (XIVE)");
+            error_report("Guest requested unavailable interrupt mode (XIVE), 
try the ic-mode=xive or ic-mode=dual machine property");
             exit(EXIT_FAILURE);
         }
     } else {
         if (spapr->irq->ov5 == SPAPR_OV5_XIVE_EXPLOIT) {
-            error_report("Guest requested unavailable interrupt mode (XICS)");
+            error_report("Guest requested unavailable interrupt mode (XICS), 
either don't set the ic-mode machine property or try ic-mode=xics or 
ic-mode=dual");
             exit(EXIT_FAILURE);
         }
     }