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Re: [PATCH] pci-host: Allow extended config space access for PowerNV PHB

From: Frederic Barrat
Subject: Re: [PATCH] pci-host: Allow extended config space access for PowerNV PHB4 model
Date: Tue, 9 Nov 2021 16:51:05 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0

On 09/11/2021 15:50, Christophe Lombard wrote:
The PCIe extended configuration space on the device is not currently
accessible to the host. if by default,  it is still inaccessible for
conventional for PCIe buses, add the current flag
PCI_BUS_EXTENDED_CONFIG_SPACE on the root bus permits PCI-E extended
config space access.

Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>

FWIW, looks good to me
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>

  hw/pci-host/pnv_phb4.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index 5c375a9f28..40b793201a 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -1205,6 +1205,7 @@ static void pnv_phb4_realize(DeviceState *dev, Error 
                                       &phb->pci_mmio, &phb->pci_io,
                                       0, 4, TYPE_PNV_PHB4_ROOT_BUS);
      pci_setup_iommu(pci->bus, pnv_phb4_dma_iommu, phb);
+    pci->bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE;
/* Add a single Root port */
      qdev_prop_set_uint8(DEVICE(&phb->root), "chassis", phb->chip_id);

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