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[Qemu-devel] [PULL for-2.11 1/2] s390x/pci: let pci devices start in con

From: Cornelia Huck
Subject: [Qemu-devel] [PULL for-2.11 1/2] s390x/pci: let pci devices start in configured mode
Date: Thu, 9 Nov 2017 16:32:03 +0100

From: Christian Borntraeger <address@hidden>

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 <address@hidden>
Acked-by: Yi Min Zhao <address@hidden>
Reviewed-by: Pierre Morel <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
 hw/s390x/s390-pci-bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index e7a58e81f7..2b1e1409bf 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -715,7 +715,7 @@ static void s390_pcihost_hot_plug(HotplugHandler 
         pbdev->pdev = pdev;
         pbdev->iommu = s390_pci_get_iommu(s, pdev->bus, pdev->devfn);
         pbdev->iommu->pbdev = pbdev;
-        pbdev->state = ZPCI_FS_STANDBY;
+        pbdev->state = ZPCI_FS_DISABLED;
         if (s390_pci_msix_init(pbdev)) {
             error_setg(errp, "MSI-X support is mandatory "

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