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spapr: Allow boot from vhost-*-scsi backends 

The current implementation of spapr_get_fw_dev_path() doesn't take into
consideration vhost-*-scsi devices. This makes said devices unbootable
on PPC as SLOF is unable to work out the path to scan boot disks.

This makes VMs bootable on spapr when using vhost-*-scsi by implementing
a disk path for VHostSCSICommon (which currently includes both
vhost-user-scsi and vhost-scsi).

Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
Signed-off-by: Mike Cui <cui@nutanix.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
master
Felipe Franciosi 2017-06-05 16:55:18 +01:00 committed by David Gibson
parent 7032d92ac8
commit c4e13492af
1 changed files with 8 additions and 0 deletions
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8
hw/ppc/spapr.c
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@ -57,6 +57,7 @@
#include "hw/pci/pci.h"
#include "hw/scsi/scsi.h"
#include "hw/virtio/virtio-scsi.h"
#include "hw/virtio/vhost-scsi-common.h"
#include "exec/address-spaces.h"
#include "hw/usb.h"
@ -2384,6 +2385,7 @@ static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus,
((type *)object_dynamic_cast(OBJECT(obj), (name)))
SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE);
sPAPRPHBState *phb = CAST(sPAPRPHBState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE);
VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON);
if (d) {
void *spapr = CAST(void, bus->parent, "spapr-vscsi");
@ -2440,6 +2442,12 @@ static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus,
return g_strdup_printf("pci@%"PRIX64, phb->buid);
}
if (vsc) {
/* Same logic as virtio above */
unsigned id = 0x1000000 | (vsc->target << 16) | vsc->lun;
return g_strdup_printf("disk@%"PRIX64, (uint64_t)id << 32);
}
return NULL;
}