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s390x/pci: reflect proper maxstbl for groups of interpreted devices

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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 <mjrosato@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <20220902172737.170349-8-mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Matthew Rosato 2022-09-02 13:27:36 -04:00 committed by Thomas Huth
parent 30dcf4f7fd
commit 9ee8f7e46a
1 changed files with 5 additions and 1 deletions
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6
hw/s390x/s390-pci-vfio.c
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@ -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;
}