diff options
| author | Eric Auger <eric.auger@redhat.com> | 2024-03-07 14:43:07 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-03-12 17:58:42 -0400 |
| commit | 01e7e4921ccebb81cebc69eb648040a57be4f5ff (patch) | |
| tree | 5b6a02cded28cfdaee72195efbe094224f94ae5b /hw | |
| parent | fdda908f945bcd985be4ebd2a06d00719bc15e93 (diff) | |
virtio-iommu: Add an option to define the input range width
aw-bits is a new option that allows to set the bit width of
the input address range. This value will be used as a default for
the device config input_range.end. By default it is set to 64 bits
which is the current value.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20240307134445.92296-7-eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio/virtio-iommu.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index aab97e1527..1326c6ec41 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -1314,7 +1314,12 @@ static void virtio_iommu_device_realize(DeviceState *dev, Error **errp) * in vfio realize */ s->config.bypass = s->boot_bypass; - s->config.input_range.end = UINT64_MAX; + if (s->aw_bits < 32 || s->aw_bits > 64) { + error_setg(errp, "aw-bits must be within [32,64]"); + return; + } + s->config.input_range.end = + s->aw_bits == 64 ? UINT64_MAX : BIT_ULL(s->aw_bits) - 1; switch (s->granule_mode) { case GRANULE_MODE_4K: @@ -1544,6 +1549,7 @@ static Property virtio_iommu_properties[] = { DEFINE_PROP_BOOL("boot-bypass", VirtIOIOMMU, boot_bypass, true), DEFINE_PROP_GRANULE_MODE("granule", VirtIOIOMMU, granule_mode, GRANULE_MODE_HOST), + DEFINE_PROP_UINT8("aw-bits", VirtIOIOMMU, aw_bits, 64), DEFINE_PROP_END_OF_LIST(), }; |