Not all interrupt controllers support message-signalled interrupts,
and some devices *only* support message-signalled interrupts.
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 <pbonz...@redhat.com>
---
hw/intc/Kconfig | 3 +++
hw/pci-host/Kconfig | 1 +
hw/pci/Kconfig | 4 ++++
hw/ppc/Kconfig | 1 +
hw/s390x/Kconfig | 1 +
5 files changed, 10 insertions(+)
diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig
index de10a6bcbf..e78b5db3be 100644
--- a/hw/intc/Kconfig
+++ b/hw/intc/Kconfig
@@ -12,12 +12,15 @@ config IOAPIC
config ARM_GIC
bool
+ select MSI
config OPENPIC
bool
+ select MSI
config APIC
bool
+ select MSI
config ARM_GIC_KVM
bool
diff --git a/hw/pci-host/Kconfig b/hw/pci-host/Kconfig
index b39ea297ba..58c99f55fa 100644
--- a/hw/pci-host/Kconfig
+++ b/hw/pci-host/Kconfig
@@ -49,3 +49,4 @@ config PCI_EXPRESS_XILINX
config PCI_EXPRESS_DESIGNWARE
bool
select PCI_EXPRESS
+ select MSI
diff --git a/hw/pci/Kconfig b/hw/pci/Kconfig
index 3b8638b51d..574b5d4a4a 100644
--- a/hw/pci/Kconfig
+++ b/hw/pci/Kconfig
@@ -7,3 +7,7 @@ config PCI_EXPRESS
config PCI_DEVICES
bool
+
+config MSI
+ # selected by interrupt controllers that support MSI
+ bool
diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
index 2b83637511..c14f7ea4fe 100644
--- a/hw/ppc/Kconfig
+++ b/hw/ppc/Kconfig
@@ -8,6 +8,7 @@ config PSERIES
select VFIO if LINUX # needed by spapr_pci_vfio.c
select XICS_SPAPR
select XIVE_SPAPR
+ select MSI
config SPAPR_RNG
bool
diff --git a/hw/s390x/Kconfig b/hw/s390x/Kconfig
index a7046ea41f..ac0f335584 100644
--- a/hw/s390x/Kconfig
+++ b/hw/s390x/Kconfig
@@ -9,3 +9,4 @@ config S390_CCW_VIRTIO
select S390_FLIC
select SCLPCONSOLE
select VIRTIO_CCW
+ select MSI
--
2.20.1
