On Tue, May 05, 2020 at 03:43:05PM +0200, Gerd Hoffmann wrote:
> With ACPI enabled and IO-APIC being properly declared in the ACPI tables
> we can use interrupt lines 16-23 for virtio and avoid shared interrupts.
> 
> With acpi disabled we continue to use lines 8-15.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  hw/i386/microvm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Sergio Lopez <slp@redhat.com>

> diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
> index 2aa2804e4ca0..08ed2a17f2ca 100644
> --- a/hw/i386/microvm.c
> +++ b/hw/i386/microvm.c
> @@ -124,7 +124,7 @@ static void microvm_devices_init(MicrovmMachineState *mms)
>  
>      kvmclock_create();
>  
> -    mms->virtio_irq_base = 8;
> +    mms->virtio_irq_base = x86_machine_is_acpi_enabled(x86ms) ? 16 : 8;
>      for (i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) {
>          sysbus_create_simple("virtio-mmio",
>                               VIRTIO_MMIO_BASE + i * 512,
> -- 
> 2.18.4
>