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authorPaolo Bonzini <pbonzini@redhat.com>2019-03-14 14:13:34 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2019-03-18 09:39:57 +0100
commitca9b7e29de3e79d6fe21bfc21297770a98d54e58 (patch)
treeb5e009179f964299b85c3fb471999a851cc60406 /hw/pci
parent4f5604c41d4a4d41964dfacaa87b08178abcc838 (diff)
kconfig: add CONFIG_MSI_NONBROKEN
Not all interrupt controllers have a working implementation of message-signalled interrupts; in some cases, the guest may expect MSI to work but it won't due to the buggy or lacking emulation. In QEMU this is represented by the "msi_nonbroken" variable. This patch adds a new configuration symbol enabled whenever the binary contains an interrupt controller that will set "msi_nonbroken". We can then use it to remove devices that cannot be possibly added to the machine, because they require MSI. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/pci')
-rw-r--r--hw/pci/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/pci/Kconfig b/hw/pci/Kconfig
index 3b8638b51d..77f8b005ff 100644
--- a/hw/pci/Kconfig
+++ b/hw/pci/Kconfig
@@ -7,3 +7,9 @@ config PCI_EXPRESS
config PCI_DEVICES
bool
+
+config MSI_NONBROKEN
+ # selected by interrupt controllers that do not support MSI,
+ # or support it and have a good implementation. See commit
+ # 47d2b0f33c664533b8dbd5cb17faa8e6a01afe1f.
+ bool