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[PATCH v6 8/8] s390x/pci: reflect proper maxstbl for groups of interpret
From: |
Matthew Rosato |
Subject: |
[PATCH v6 8/8] s390x/pci: reflect proper maxstbl for groups of interpreted devices |
Date: |
Tue, 24 May 2022 15:03:05 -0400 |
The maximum supported store block length might be different depending
on whether the instruction is interpretively executed (firmware-reported
maximum) or handled via userspace intercept (host kernel API maximum).
Choose the best available value during group creation.
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 --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c
index 985980f021..212dd053f7 100644
--- a/hw/s390x/s390-pci-vfio.c
+++ b/hw/s390x/s390-pci-vfio.c
@@ -213,7 +213,11 @@ static void s390_pci_read_group(S390PCIBusDevice *pbdev,
resgrp->msia = cap->msi_addr;
resgrp->mui = cap->mui;
resgrp->i = cap->noi;
- resgrp->maxstbl = cap->maxstbl;
+ if (pbdev->interp && hdr->version >= 2) {
+ resgrp->maxstbl = cap->imaxstbl;
+ } else {
+ resgrp->maxstbl = cap->maxstbl;
+ }
resgrp->version = cap->version;
resgrp->dtsm = ZPCI_DTSM;
}
--
2.27.0
- [PATCH v6 0/8] s390x/pci: zPCI interpretation support, Matthew Rosato, 2022/05/24
- [PATCH v6 1/8] Update linux headers, Matthew Rosato, 2022/05/24
- [PATCH v6 2/8] target/s390x: add zpci-interp to cpu models, Matthew Rosato, 2022/05/24
- [PATCH v6 3/8] s390x/pci: add routine to get host function handle from CLP info, Matthew Rosato, 2022/05/24
- [PATCH v6 4/8] s390x/pci: enable for load/store intepretation, Matthew Rosato, 2022/05/24
- [PATCH v6 7/8] s390x/pci: let intercept devices have separate PCI groups, Matthew Rosato, 2022/05/24
- [PATCH v6 8/8] s390x/pci: reflect proper maxstbl for groups of interpreted devices,
Matthew Rosato <=
- [PATCH v6 6/8] s390x/pci: enable adapter event notification for interpreted devices, Matthew Rosato, 2022/05/24
- [PATCH v6 5/8] s390x/pci: don't fence interpreted devices without MSI-X, Matthew Rosato, 2022/05/24