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From: "George Spelvin" <linux@horizon.com>
To: herbert@gondor.apana.org.au, JBeulich@suse.com,
	linux@horizon.com, tim.c.chen@linux.intel.com
Cc: linux-kernel@vger.kernel.org, sandyw@twitter.com
Subject: Re: [RFC PATCH] crypto: crc32c-pclmul - Use pmovzxdq to shrink K_table
Date: 28 May 2014 11:32:49 -0400	[thread overview]
Message-ID: <20140528153249.18014.qmail@ns.horizon.com> (raw)
In-Reply-To: <20140528144000.28686.qmail@ns.horizon.com>

Um, yeah, I just noticed the problem with that patch: half of the numbers
in that table are 33 bits, and cause a pile of warnings (not errors,
unfortunately!) from gas that scrolled by when I wasn't looking.

Logically, there should be no need for 33-bit values; they should all be
reducible modulo the polynomial.  But that is going to take a slightly
larger change.

  reply	other threads:[~2014-05-28 15:32 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-28 14:40 George Spelvin
2014-05-28 15:32 ` George Spelvin [this message]
2014-05-28 22:15   ` [PATCH v2] crypto: crc32c-pclmul - Shrink K_table to 32-bit words George Spelvin
2014-05-28 23:02     ` Tim Chen
2014-05-28 23:55       ` George Spelvin
2014-05-29  3:26       ` George Spelvin
2014-05-29 16:33         ` Tim Chen
2014-05-28 20:47 ` [RFC PATCH] crypto: crc32c-pclmul - Use pmovzxdq to shrink K_table Jan Beulich
2014-05-28 21:47   ` George Spelvin
2014-05-29  6:44     ` Jan Beulich
2014-05-28 22:32 ` Tim Chen
2014-05-28 23:01   ` George Spelvin
2014-05-28 23:28     ` Tim Chen
2014-05-29 23:54       ` George Spelvin
2014-05-30  1:07         ` Tim Chen
2014-05-30  1:16           ` Dave Jones
2014-05-30 17:56             ` Tim Chen
2014-05-30 18:45               ` Dirk Brandewie
2014-05-30 19:32                 ` Tim Chen
2014-05-30 19:38                   ` Dirk Brandewie
2014-05-30 20:07                     ` Tim Chen
2014-05-30 20:15                       ` Dirk Brandewie
2014-05-30  1:37           ` George Spelvin
2014-05-30  5:25             ` George Spelvin
2014-05-30 16:10               ` Tim Chen
2014-05-30 16:52                 ` George Spelvin
2014-05-30 17:01                   ` Tim Chen
2014-06-07  3:08                     ` [PATCH v3] crypto: crc32c-pclmul - Shrink K_table to 32-bit words George Spelvin
2014-06-20 18:42                       ` Herbert Xu

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