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Linaro-mm-sig January 2025

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Re: [RFC PATCH 08/12] vfio/pci: Create host unaccessible dma-buf for private device

by Jason Gunthorpe

On Tue, Jan 07, 2025 at 10:27:15PM +0800, Xu Yilun wrote: > Add a flag for ioctl(VFIO_DEVICE_BIND_IOMMUFD) to mark a device as > for private assignment. For these private assigned devices, disallow > host accessing their MMIO resources. Why? Shouldn't the VMM simply not call mmap? Why does the kernel have to enforce this? Jason

1 year, 4 months