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authorAnthony Liguori <aliguori@us.ibm.com>2012-01-23 11:00:26 -0600
committerAnthony Liguori <aliguori@us.ibm.com>2012-01-23 11:00:26 -0600
commit5b4448d27d7c6ff6e18a1edc8245cb1db783e37c (patch)
treea3b896984ff6ae566892eb198e5b34b197288194 /hw/msi.c
parentc4ccbeaca521bdbf5cb8db37dc67c47e1add0586 (diff)
parent6a48ffaaa732b2142c1b5030178f2d4a0fa499fe (diff)
Merge remote-tracking branch 'qemu-kvm/uq/master' into staging
* qemu-kvm/uq/master: kvm: Activate in-kernel irqchip support kvm: x86: Add user space part for in-kernel IOAPIC kvm: x86: Add user space part for in-kernel i8259 kvm: x86: Add user space part for in-kernel APIC kvm: x86: Establish IRQ0 override control kvm: Introduce core services for in-kernel irqchip support memory: Introduce memory_region_init_reservation ioapic: Factor out base class for KVM reuse ioapic: Drop post-load irr initialization i8259: Factor out base class for KVM reuse i8259: Completely privatize PicState apic: Open-code timer save/restore apic: Factor out base class for KVM reuse apic: Introduce apic_report_irq_delivered apic: Inject external NMI events via LINT1 apic: Stop timer on reset kvm: Move kvmclock into hw/kvm folder msi: Generalize msix_supported to msi_supported hyper-v: initialize Hyper-V CPUID leaves. hyper-v: introduce Hyper-V support infrastructure. Conflicts: Makefile.target Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/msi.c')
-rw-r--r--hw/msi.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/msi.c b/hw/msi.c
index f214fcf579..5d6ceb6df0 100644
--- a/hw/msi.c
+++ b/hw/msi.c
@@ -36,6 +36,9 @@
#define PCI_MSI_VECTORS_MAX 32
+/* Flag for interrupt controller to declare MSI/MSI-X support */
+bool msi_supported;
+
/* If we get rid of cap allocator, we won't need this. */
static inline uint8_t msi_cap_sizeof(uint16_t flags)
{
@@ -116,6 +119,11 @@ int msi_init(struct PCIDevice *dev, uint8_t offset,
uint16_t flags;
uint8_t cap_size;
int config_offset;
+
+ if (!msi_supported) {
+ return -ENOTSUP;
+ }
+
MSI_DEV_PRINTF(dev,
"init offset: 0x%"PRIx8" vector: %"PRId8
" 64bit %d mask %d\n",