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Subject: Re: RFD - Support for memory tagging in GLIBC
To: Szabolcs Nagy <Szabolcs.Nagy@arm.com>,
 Richard Earnshaw <Richard.Earnshaw@arm.com>
Cc: nd <nd@arm.com>, GNU C Library <libc-alpha@sourceware.org>
References: <8306e032-f980-a409-5239-74629e79d041@arm.com>
 <bb183d3c-76d3-fbb3-8588-544b5615c2a2@cs.ucla.edu>
 <99caf4bc-57fc-9a51-478f-254e03045e31@arm.com>
From: Paul Eggert <eggert@cs.ucla.edu>
Message-ID: <8654c219-a930-9e65-891c-7b8c74c658cc@cs.ucla.edu>
Date: Tue, 10 Sep 2019 07:55:02 -0700
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Thanks for the clarification. (Hope you don't mind if I cite your email in one 
of my lectures this fall. :-)

SPARC ADI has a 64-byte granule, and Richard's email said there could be an 
efficiency issue there since I assume malloc's block header is smaller than 64 
bytes. However, this should be a headache only for the SPARC ADI port and should 
not be user-visible (except for performance).