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[v2] spapr: Allow boot from vhost-*-scsi backends

Message ID 1496678118-27350-2-git-send-email-felipe@nutanix.com (mailing list archive)
State New, archived
Headers show

Commit Message

Felipe Franciosi June 5, 2017, 3:55 p.m. UTC 
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>
---
 hw/ppc/spapr.c | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

David Gibson June 5, 2017, 11:19 p.m. UTC | #1 
On Mon, Jun 05, 2017 at 04:55:18PM +0100, Felipe Franciosi wrote:
> 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>

Applied to ppc-for-2.10, thanks.

> ---
>  hw/ppc/spapr.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index ab3aab1..1c87886 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -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"
> @@ -2388,6 +2389,7 @@ 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");
> @@ -2444,6 +2446,12 @@ 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;
>  }
>
diff mbox

Patch

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index ab3aab1..1c87886 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -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"
@@ -2388,6 +2389,7 @@  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");
@@ -2444,6 +2446,12 @@  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;
 }