diff mbox series

[v7,10/21] microvm/acpi: use GSI 16-23 for virtio

Message ID 20200908121050.1162-11-kraxel@redhat.com
State New
Headers show
Series microvm: add acpi support | expand

Commit Message

Gerd Hoffmann Sept. 8, 2020, 12:10 p.m. UTC
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 5-12.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/i386/microvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index e1b86da8a92e..ca0c9983f137 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -125,7 +125,7 @@  static void microvm_devices_init(MicrovmMachineState *mms)
 
     kvmclock_create();
 
-    mms->virtio_irq_base = 5;
+    mms->virtio_irq_base = x86_machine_is_acpi_enabled(x86ms) ? 16 : 5;
     for (i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) {
         sysbus_create_simple("virtio-mmio",
                              VIRTIO_MMIO_BASE + i * 512,