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Andrew Cooper
83af664db3
Four TRC_MEM_* records supply custom structures with tail padding, leaking stack rubble into the trace buffer. Three of the records were fine in 32-bit builds of Xen, due to the relaxed alignment of 64-bit integers, but POD_SUPERPAGE_SPLITER was broken right from the outset. We could pack the datastructures to remove the padding, but xentrace_format has no way of rendering the upper half of a 16-bit field. Instead, expand all 16-bit fields to 32-bit. For POD_SUPERPAGE_SPLINTER, introduce an order field as it is relevant information, and to match DECREASE_RESERVATION, and so it doesn't require a __packed attribute to drop tail padding. Update xenalyze's structures to match, and introduce xentrace_format rendering which was absent previously. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Dario Faggioli <dfaggioli@suse.com>