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s390x/pci: let pci devices start in configured mode

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Currently, to enable a pci device in the guest, the user has to issue
echo 1 > /sys/bus/pci/slots/00000000/power. This is not what people
expect. On an LPAR, the user can put a PCI device in configured or
deconfigured state via IOCDS. The "start in deconfigured state" can be
used for "sharing" a pci function across LPARs. This is not what we are
going to use in KVM, so always start configured.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Message-Id: <20171107175455.73793-2-borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Christian Borntraeger 2017-11-07 18:54:55 +01:00 committed by Cornelia Huck
parent b0fbe46ad8
commit 2c28c49057
1 changed files with 1 additions and 1 deletions
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2
hw/s390x/s390-pci-bus.c
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@ -715,7 +715,7 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev,
pbdev->pdev = pdev; pbdev->pdev = pdev;
pbdev->iommu = s390_pci_get_iommu(s, pdev->bus, pdev->devfn); pbdev->iommu = s390_pci_get_iommu(s, pdev->bus, pdev->devfn);
pbdev->iommu->pbdev = pbdev; pbdev->iommu->pbdev = pbdev;
pbdev->state = ZPCI_FS_STANDBY; pbdev->state = ZPCI_FS_DISABLED;
if (s390_pci_msix_init(pbdev)) { if (s390_pci_msix_init(pbdev)) {
error_setg(errp, "MSI-X support is mandatory " error_setg(errp, "MSI-X support is mandatory "