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e7625ee53f
This makes the intended access mode explicit when registering DMA regions with the server. A new "file I/O" access mode is defined, which can be used if the file descriptor provided by the client doesn't support `mmap()`. Signed-off-by: Mattias Nissler <mnissler@meta.com> Reviewed-by: John Levon <john.levon@nutanix.com> Link: https://lore.kernel.org/qemu-devel/20260602133829.305842-1-mnissler@meta.com Signed-off-by: Cédric Le Goater <clg@redhat.com>