Absence of any Extended Capabilities is required to be
indicated by an Extended Capability header with a Capability ID of
0000h, a Capability Version of 0h, and a Next Capability Offset of 000h.
Instead of inserting a 'NULL' capability is simpler to mark the start
of the Extended Configuration Space as read-only to achieve the same
behaviour.
Signed-off-by: Marcel Apfelbaum <mar...@redhat.com>
---
hw/pci/pcie.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index 99cfb45..62c1def 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -109,6 +109,9 @@ int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t
type, uint8_t port)
PCI_EXP_DEVCAP2_EFF | PCI_EXP_DEVCAP2_EETLPP);
pci_set_word(dev->wmask + pos + PCI_EXP_DEVCTL2, PCI_EXP_DEVCTL2_EETLPPB);
+
+ /* read-only to behave like a 'NULL' Extended Capability Header */
+ pci_set_long(dev->wmask + PCI_CONFIG_SPACE_SIZE, 0);
return pos;
}
--
2.5.5
