(Applies to kvm-userspace.git:a1075de527f309850df278484f2ef4127827c6f4)
The PCI spec requires bit 4 of the config-space STATUS register to be set
in order to indicate that the capabilities pointer and capabilities area are
valid. We have a pci_enable_capabilities() routine to fill out the
config-space metadata, but we leave the status bit cleared. It is not
apparent if this was intentionally omitted as part of the related
device-assignment support, or simply an oversight. This patch completes
the function by also setting the status bit appropriately.
Signed-off-by: Gregory Haskins <ghaskins@xxxxxxxxxx>
CC: Sheng Yang <sheng@xxxxxxxxxxxxxxx>
---
qemu/hw/pci.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/qemu/hw/pci.c b/qemu/hw/pci.c
index bf97c8c..5bfc4df 100644
--- a/qemu/hw/pci.c
+++ b/qemu/hw/pci.c
@@ -1009,6 +1009,8 @@ int pci_enable_capability_support(PCIDevice *pci_dev,
if (!pci_dev)
return -ENODEV;
+ pci_dev->config[0x06] |= 0x10; // status = capabilities
+
if (config_start == 0)
pci_dev->cap.start = PCI_CAPABILITY_CONFIG_DEFAULT_START_ADDR;
else if (config_start >= 0x40 && config_start < 0xff)
--
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