Struct vm_memory::udmabuf::sys::linux::UnixUdmabufDriver

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pub struct UnixUdmabufDriver {
    driver_fd: File,
}
Expand description

A convenience wrapper for the Linux kernel’s udmabuf driver.

udmabuf is a kernel driver that turns memfd pages into dmabufs. It can be used for zero-copy buffer sharing between the guest and host when guest memory is backed by memfd pages.

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§driver_fd: File

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impl UdmabufDriverTrait for UnixUdmabufDriver

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fn new() -> UdmabufResult<UnixUdmabufDriver>

Opens the udmabuf device on success.
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fn create_udmabuf( &self, mem: &GuestMemory, iovecs: &[(GuestAddress, usize)] ) -> UdmabufResult<SafeDescriptor>

Creates a dma-buf fd for the given scatter-gather list of guest memory pages (iovecs).

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