When user specify "kernel-irqchip=on", throw error and then quit.
Signed-off-by: Peter Xu <pet...@redhat.com> Reviewed-by: Paolo Bonzini <pbonz...@redhat.com> --- hw/i386/intel_iommu.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 8a91e64..76471ad 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -20,6 +20,7 @@ */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "hw/sysbus.h" #include "exec/address-spaces.h" #include "intel_iommu_internal.h" @@ -29,6 +30,7 @@ #include "hw/boards.h" #include "hw/i386/x86-iommu.h" #include "hw/pci-host/q35.h" +#include "sysemu/kvm.h" /*#define DEBUG_INTEL_IOMMU*/ #ifdef DEBUG_INTEL_IOMMU @@ -2476,6 +2478,13 @@ static void vtd_realize(DeviceState *dev, Error **errp) pci_setup_iommu(bus, vtd_host_dma_iommu, dev); /* Pseudo address space under root PCI bus. */ pcms->ioapic_as = vtd_host_dma_iommu(bus, s, Q35_PSEUDO_DEVFN_IOAPIC); + + /* Currently Intel IOMMU IR only support "kernel-irqchip={off|split}" */ + if (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split()) { + error_report("Intel Interrupt Remapping cannot work with " + "kernel-irqchip=on, please use 'split|off'."); + exit(1); + } } static void vtd_class_init(ObjectClass *klass, void *data) -- 2.4.11