From: Bandan Das <b...@redhat.com> There's no indication of any sort that i440fx doesn't support "iommu=on"
Reviewed-by: Eric Blake <ebl...@redhat.com> Signed-off-by: Bandan Das <b...@redhat.com> Reviewed-by: Michael S. Tsirkin <m...@redhat.com> Signed-off-by: Michael S. Tsirkin <m...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> Signed-off-by: Bandan Das <b...@redhat.com> --- hw/pci-host/piix.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index 7b2fbf9..715208b 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -34,6 +34,7 @@ #include "sysemu/sysemu.h" #include "hw/i386/ioapic.h" #include "qapi/visitor.h" +#include "qemu/error-report.h" /* * I440FX chipset data sheet. @@ -301,6 +302,10 @@ static void i440fx_pcihost_realize(DeviceState *dev, Error **errp) static void i440fx_realize(PCIDevice *dev, Error **errp) { dev->config[I440FX_SMRAM] = 0x02; + + if (object_property_get_bool(qdev_get_machine(), "iommu", NULL)) { + error_report("warning: i440fx doesn't support emulated iommu"); + } } PCIBus *i440fx_init(const char *host_type, const char *pci_type, -- MST