From 9ee8f7e46a7d42ede69a4780200129bf1acb0d01 Mon Sep 17 00:00:00 2001 From: Matthew Rosato Date: Fri, 2 Sep 2022 13:27:36 -0400 Subject: [PATCH] s390x/pci: reflect proper maxstbl for groups of interpreted devices 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. Signed-off-by: Matthew Rosato Reviewed-by: Pierre Morel Message-Id: <20220902172737.170349-8-mjrosato@linux.ibm.com> Signed-off-by: Thomas Huth --- 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 338f436e87..2aefa508a0 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; }