Messages in this thread | | | Date | Sat, 21 Aug 2021 13:49:19 +0200 | From | Greg KH <> | Subject | Re: [PATCH 1/3] virt: acrn: Introduce interfaces for MMIO device passthrough |
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On Fri, Aug 20, 2021 at 02:03:04PM +0800, Fei Li wrote: > From: Shuo Liu <shuo.a.liu@intel.com> > > MMIO device passthrough enables an OS in a virtual machine to directly > access a MMIO device in the host. It promises almost the native > performance, which is required in performance-critical scenarios of > ACRN. > > HSM provides the following ioctls: > - Assign - ACRN_IOCTL_ASSIGN_MMIODEV > Pass data struct acrn_mmiodev from userspace to the hypervisor, and > inform the hypervisor to assign a MMIO device to a User VM. > > - De-assign - ACRN_IOCTL_DEASSIGN_PCIDEV > Pass data struct acrn_mmiodev from userspace to the hypervisor, and > inform the hypervisor to de-assign a MMIO device from a User VM. > > Signed-off-by: Shuo Liu <shuo.a.liu@intel.com> > Signed-off-by: Fei Li <fei1.li@intel.com> > --- > drivers/virt/acrn/hsm.c | 25 +++++++++++++++++++++++++ > drivers/virt/acrn/hypercall.h | 26 ++++++++++++++++++++++++++ > include/uapi/linux/acrn.h | 28 ++++++++++++++++++++++++++++ > 3 files changed, 79 insertions(+) >
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This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly.
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