diff mbox series

[v2,8/9] s390x/pci: use dtsm provided from vfio capabilities for interpreted devices

Message ID 20220114203849.243657-9-mjrosato@linux.ibm.com
State New
Headers show
Series s390x/pci: zPCI interpretation support | expand

Commit Message

Matthew Rosato Jan. 14, 2022, 8:38 p.m. UTC 
When using the IOAT assist via interpretation, we should advertise what
the host driver supports, not QEMU.

Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
 hw/s390x/s390-pci-vfio.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c
index 4e3165bff5..347cbdfdf8 100644
--- a/hw/s390x/s390-pci-vfio.c
+++ b/hw/s390x/s390-pci-vfio.c
@@ -318,7 +318,11 @@  static void s390_pci_read_group(S390PCIBusDevice *pbdev,
         resgrp->i = cap->noi;
         resgrp->maxstbl = cap->maxstbl;
         resgrp->version = cap->version;
-        resgrp->dtsm = ZPCI_DTSM;
+        if (hdr->version >= 2 && pbdev->interp) {
+            resgrp->dtsm = cap->dtsm;
+        } else {
+            resgrp->dtsm = ZPCI_DTSM;
+        }
     }
 }