virtio_net: apply DMA cache maintenance for a non-coherent rproc peer - #15
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UlasSertan wants to merge 1 commit into
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virtio_net: apply DMA cache maintenance for a non-coherent rproc peer#15UlasSertan wants to merge 1 commit into
UlasSertan wants to merge 1 commit into
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The J722S R5F remote core is not cache-coherent with the A53, and a legacy remoteproc virtio device cannot negotiate VIRTIO_F_ACCESS_PLATFORM, so the vring layer never syncs payload buffers. Clean RX buffers before posting, invalidate received data before reading, and clean TX payloads before publishing, against the rproc vdev's non-coherent parent device.
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The J722S R5F remote core is not cache-coherent with the A53, and a legacy remoteproc virtio device cannot negotiate VIRTIO_F_ACCESS_PLATFORM, so the vring layer never syncs payload buffers. Clean RX buffers before posting, invalidate received data before reading, and clean TX payloads before publishing, against the rproc vdev's non-coherent parent device.