[Qemu-ppc] [PATCH] spapr: Reduce advertised max LUNs for spapr_vscsi

[David Gibson]

The implementation of the PAPR paravirtual SCSI adapter currently
allows up to 32 LUNs (max_lun == 31).  However the adapter isn't really
designed to support lots of devices - the PowerVM implementation only
ever puts one disk per vSCSI controller.

More specifically, the Linux guest side vscsi driver (the only one we
really care about) is hardcoded to allow a maximum of 8 LUNs.

So, reduce the number of LUNs on the qemu side to 8, so we don't
falsely advertise that more LUNs can work.

Signed-off-by: David Gibson <address@hidden>
---
 hw/scsi/spapr_vscsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/scsi/spapr_vscsi.c b/hw/scsi/spapr_vscsi.c
index 891424f..bb1dd6f 100644
--- a/hw/scsi/spapr_vscsi.c
+++ b/hw/scsi/spapr_vscsi.c
@@ -1192,7 +1192,7 @@ static const struct SCSIBusInfo vscsi_scsi_info = {
     .tcq = true,
     .max_channel = 7, /* logical unit addressing format */
     .max_target = 63,
-    .max_lun = 31,
+    .max_lun = 7,
 
     .transfer_data = vscsi_transfer_data,
     .complete = vscsi_command_complete,
-- 
2.4.3