Ryuichiro Chiba a1a1d9f4d8 devices: usb: Use DMA buffer for data transfer if possible ... usbdevfs supports mmap() interface to allocate a DMA buffer of a device. We can reduce the number of data copy during data transfer between the host and a device by using the buffer. This CL tries to allocate a DMA buffer and use the buffer if succeeded. BUG=b:299386701 TEST=`./tools/dev_container ./tools/presubmit` TEST=a USB mass-storage device worked on refvm Change-Id: I755b398f139a0950e7e65ce29d0b0c9ba1091665 Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4856199 Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-by: Morg <morg@google.com> Commit-Queue: Ryuichiro Chiba <chibar@chromium.org> Reviewed-by: Dennis Kempin <denniskempin@google.com>		2023-09-28 01:14:27 +00:00
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src	devices: usb: Use DMA buffer for data transfer if possible	2023-09-28 01:14:27 +00:00
Cargo.toml	devices: usb: Use DMA buffer for data transfer if possible	2023-09-28 01:14:27 +00:00