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The protocol specifies that DMA write replies should include address+count, but the client code was only doing so for read. Fix that up. In addition, add a protocol clarification over how short writes may be reported in that reply. QEMU never reports a short write via the count field. Reported-by: Patrick Mooney <patrick@matx.com> Signed-off-by: John Levon <john.levon@nutanix.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Link: https://lore.kernel.org/qemu-devel/20260410085716.877185-4-john.levon@nutanix.com Signed-off-by: Cédric Le Goater <clg@redhat.com>