Arm platforms with the right hardware blocks (such as
GICv3.0+ interrupt controller and SMMU/IOMMU) are
able to use vfio-pci to pass through PCI devices
to a VM.
Signed-off-by: Mathew McBride <matt@traverse.com.au>
(cherry picked from commit 9ac01aac0a)
The vfio module only exposes the enable_unsafe_noiommu_mode parameter
if CONFIG_VFIO_NOIOMMU is enabled. When it isn't, the module
will complain about an unknown parameter:
vfio: unknown parameter 'enable_unsafe_noiommu_mode' ignored
As CONFIG_VFIO_NOIOMMU is disabled by the module package,
we can remove the module loading parameter.
Signed-off-by: Mathew McBride <matt@traverse.com.au>
(cherry picked from commit 7ad8612a23)
vhost-net is used to accelerate traffic to virtualisation
guests that use the virtio-net network card in QEMU.
Generally it is invoked by specifying "vhost=on" to a
QEMU -netdev device:
qemu-system-aarch64 -nographic -M virt -cpu host \
--enable-kvm -bios u-boot.bin -smp 1 -m 2048 \
-drive file=openwrt-armsr-armv8.img,format=raw,index=0,media=disk \
-device "virtio-net,netdev=landev,disable-legacy=off,disable-modern=off" \
-netdev "tap,id=landev,helper=/usr/lib/qemu-bridge-helper --br=br-lan,vhost=on"
Signed-off-by: Mathew McBride <matt@traverse.com.au>
(cherry picked from commit d188db8aed)
IGD is only useful when accelerating a VM guest that wants to direct
render to memory in the host's framebuffer, but since OpenWrt
typically runs on headless hardware, this serves no purpose.
Also build vfio with VFIO_NOIOMMU undefined (to get all of the code
enabled), but allow it to be enabled via boot-time modparams
settings (or at run-time via sysfs writes to
"/sys/module/vfio/parameters/enable_unsafe_noiommu_mode".
Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
Even though TRACEPOINTS is not enabled in my kernel config, my build
fails due to KVM_MMU_AUDIT being missing. Add this symbol to kmod-kvm to
fix this.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
