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hw/arm/virt: Set virtio-iommu aw-bits default value to 48

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On ARM we set 48b as a default (matching SMMUv3 SMMU_IDR5.VAX == 0).

hw_compat_8_2 is used to handle the compatibility for machine types
before 9.0 (default was 64 bits).

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <Zhenzhong.duan@intel.com>
Message-Id: <20240307134445.92296-9-eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eric Auger 2024-03-07 14:43:09 +01:00 committed by Michael S. Tsirkin
parent 9b588be373
commit 62d776002c
1 changed files with 17 additions and 0 deletions
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17
hw/arm/virt.c
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@ -85,11 +85,28 @@
#include "hw/char/pl011.h"
#include "qemu/guest-random.h"
static GlobalProperty arm_virt_compat[] = {
{ TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "48" },
};
static const size_t arm_virt_compat_len = G_N_ELEMENTS(arm_virt_compat);
/*
* This cannot be called from the virt_machine_class_init() because
* TYPE_VIRT_MACHINE is abstract and mc->compat_props g_ptr_array_new()
* only is called on virt non abstract class init.
*/
static void arm_virt_compat_set(MachineClass *mc)
{
compat_props_add(mc->compat_props, arm_virt_compat,
arm_virt_compat_len);
}
#define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
void *data) \
{ \
MachineClass *mc = MACHINE_CLASS(oc); \
arm_virt_compat_set(mc); \
virt_machine_##major##_##minor##_options(mc); \
mc->desc = "QEMU " # major "." # minor " ARM Virtual Machine"; \
if (latest) { \