diff options
Diffstat (limited to 'hw/i386/x86-iommu.c')
| -rw-r--r-- | hw/i386/x86-iommu.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c index abc3c03158..d1534c1ae0 100644 --- a/hw/i386/x86-iommu.c +++ b/hw/i386/x86-iommu.c @@ -112,6 +112,7 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp) PCMachineState *pcms = PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE)); QLIST_INIT(&x86_iommu->iec_notifiers); + bool irq_all_kernel = kvm_irqchip_in_kernel() && !kvm_irqchip_is_split(); if (!pcms || !pcms->bus) { error_setg(errp, "Machine-type '%s' not supported by IOMMU", @@ -119,9 +120,14 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp) return; } + /* If the user didn't specify IR, choose a default value for it */ + if (x86_iommu->intr_supported == ON_OFF_AUTO_AUTO) { + x86_iommu->intr_supported = irq_all_kernel ? + ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON; + } + /* Both Intel and AMD IOMMU IR only support "kernel-irqchip={off|split}" */ - if (x86_iommu->intr_supported && kvm_irqchip_in_kernel() && - !kvm_irqchip_is_split()) { + if (x86_iommu_ir_supported(x86_iommu) && irq_all_kernel) { error_setg(errp, "Interrupt Remapping cannot work with " "kernel-irqchip=on, please use 'split|off'."); return; @@ -135,7 +141,8 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp) } static Property x86_iommu_properties[] = { - DEFINE_PROP_BOOL("intremap", X86IOMMUState, intr_supported, false), + DEFINE_PROP_ON_OFF_AUTO("intremap", X86IOMMUState, + intr_supported, ON_OFF_AUTO_AUTO), DEFINE_PROP_BOOL("device-iotlb", X86IOMMUState, dt_supported, false), DEFINE_PROP_BOOL("pt", X86IOMMUState, pt_supported, true), DEFINE_PROP_END_OF_LIST(), @@ -148,6 +155,11 @@ static void x86_iommu_class_init(ObjectClass *klass, void *data) dc->props = x86_iommu_properties; } +bool x86_iommu_ir_supported(X86IOMMUState *s) +{ + return s->intr_supported == ON_OFF_AUTO_ON; +} + static const TypeInfo x86_iommu_info = { .name = TYPE_X86_IOMMU_DEVICE, .parent = TYPE_SYS_BUS_DEVICE, |