PCI capabilities can't appear magically at runtime.
Guests aren't expecting that. Assert all capabilities
are added _before_ a device instance is realized.
Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
hw/pci/pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index ac41fcbf6a..ed60b352e4 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -2397,7 +2397,7 @@ static void pci_del_option_rom(PCIDevice *pdev)
* On success, pci_add_capability() returns a positive value
* that the offset of the pci capability.
* On failure, it sets an error and returns a negative error
- * code.
+ * code. @pdev must be unrealized.
*/
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t offset, uint8_t size,
@@ -2406,6 +2406,8 @@ int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t *config;
int i, overlapping_cap;
+ assert(!DEVICE(pdev)->realized);
+
if (!offset) {
offset = pci_find_space(pdev, size);
/* out of PCI config space is programming error */
--
2.38.1
