Hi,
This adds 'scalable_mode' and 'first_stage' attributes to intel IOMMU so
that emulated device can run with first stage translation.
This is based on Nathan Chen's iommufd series v2[1], so for passthrough
device, nested tranlation is enabled automatically with below config:
<iommu model='intel'>
<driver caching_mode='on' iotlb='on' scalable_mode='on' first_stage='on'/>
</iommu>
Tests:
Basic net card passthrough
libvirt selftest
Thanks
Zhenzhong
[1]
https://lists.libvirt.org/archives/list/[email protected]/thread/KFYUQGMXWV64QPI245H66GKRNAYL7LGB/
Zhenzhong Duan (3):
qemu: Introduce scalable_mode and first_stage capabilities
conf: add support for 'scalable_mode' and 'first_stage' attributes to
intel IOMMU
qemu: Add command line support for scalable mode and first stage of
virtual vtd
docs/formatdomain.rst | 8 +++++
src/conf/domain_conf.c | 35 ++++++++++++++++++-
src/conf/domain_conf.h | 2 ++
src/conf/domain_validate.c | 6 ++++
src/conf/schemas/domaincommon.rng | 10 ++++++
src/qemu/qemu_capabilities.c | 4 +++
src/qemu/qemu_capabilities.h | 2 ++
src/qemu/qemu_command.c | 2 ++
src/qemu/qemu_validate.c | 12 +++++++
.../caps_10.0.0_x86_64+amdsev.xml | 2 ++
.../caps_10.0.0_x86_64.xml | 2 ++
.../caps_10.1.0_x86_64+inteltdx.xml | 2 ++
.../caps_10.1.0_x86_64.xml | 2 ++
.../caps_10.2.0_x86_64.xml | 2 ++
.../caps_6.2.0_x86_64.xml | 1 +
.../caps_7.0.0_x86_64.xml | 1 +
.../caps_7.1.0_x86_64.xml | 1 +
.../caps_7.2.0_x86_64+hvf.xml | 1 +
.../caps_7.2.0_x86_64.xml | 1 +
.../caps_8.0.0_x86_64.xml | 1 +
.../caps_8.1.0_x86_64.xml | 1 +
.../caps_8.2.0_x86_64.xml | 1 +
.../caps_9.0.0_x86_64.xml | 1 +
.../caps_9.1.0_x86_64.xml | 1 +
.../caps_9.2.0_x86_64+amdsev.xml | 1 +
.../caps_9.2.0_x86_64.xml | 1 +
26 files changed, 102 insertions(+), 1 deletion(-)
--
2.47.3
