sPAPR: Don't enable EEH on emulated PCI devices

There might have emulated PCI devices, together with VFIO PCI
devices under one PHB. The EEH capability shouldn't enabled
on emulated PCI devices.

The patch returns error when enabling EEH capability on emulated
PCI devices by RTAS call "ibm,set-eeh-option".

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index a139aea89865923743cf88048af5235a495984d4..a8f79d80038b30da508f723311a0b1eb926f7987 100644 (file)
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -429,6 +429,7 @@ static void rtas_ibm_set_eeh_option(PowerPCCPU *cpu,
 {
     sPAPRPHBState *sphb;
     sPAPRPHBClass *spc;
+    PCIDevice *pdev;
     uint32_t addr, option;
     uint64_t buid;
     int ret;
@@ -446,6 +447,12 @@ static void rtas_ibm_set_eeh_option(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
+    pdev = pci_find_device(PCI_HOST_BRIDGE(sphb)->bus,
+                           (addr >> 16) & 0xFF, (addr >> 8) & 0xFF);
+    if (!pdev || !object_dynamic_cast(OBJECT(pdev), "vfio-pci")) {
+        goto param_error_exit;
+    }
+
     spc = SPAPR_PCI_HOST_BRIDGE_GET_CLASS(sphb);
     if (!spc->eeh_set_option) {
         goto param_error_exit;