From 3ef1497b46c57eba151fb1d0bdd8c8bff8a0f524 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 1 Jul 2022 11:15:16 +0200 Subject: microvm: turn off io reservations for pcie root ports The pcie host bridge has no io window on microvm, so io reservations will not work. Signed-off-by: Gerd Hoffmann Message-Id: <20220701091516.43489-1-kraxel@redhat.com> --- hw/i386/microvm.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c index 754f1d0593..dc929727dc 100644 --- a/hw/i386/microvm.c +++ b/hw/i386/microvm.c @@ -631,6 +631,14 @@ static void microvm_machine_initfn(Object *obj) qemu_register_powerdown_notifier(&mms->powerdown_req); } +GlobalProperty microvm_properties[] = { + /* + * pcie host bridge (gpex) on microvm has no io address window, + * so reserving io space is not going to work. Turn it off. + */ + { "pcie-root-port", "io-reserve", "0" }, +}; + static void microvm_class_init(ObjectClass *oc, void *data) { X86MachineClass *x86mc = X86_MACHINE_CLASS(oc); @@ -707,6 +715,9 @@ static void microvm_class_init(ObjectClass *oc, void *data) "Set off to disable adding virtio-mmio devices to the kernel cmdline"); machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); + + compat_props_add(mc->compat_props, microvm_properties, + G_N_ELEMENTS(microvm_properties)); } static const TypeInfo microvm_machine_info = { -- cgit v1.2.3