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From: Ingo Molnar <mingo@kernel.org>
To: Jan Beulich <JBeulich@suse.com>
Cc: mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86-64: use 32-bit XOR to zero registers
Date: Tue, 26 Jun 2018 09:17:05 +0200	[thread overview]
Message-ID: <20180626071705.GB26761@gmail.com> (raw)
In-Reply-To: <5B30C32902000078001CD6D5@prv1-mh.provo.novell.com>


* Jan Beulich <JBeulich@suse.com> wrote:

> Some Intel CPUs don't recognize 64-bit XORs as zeroing idioms

Please write out the consequence of that in the changelog.

Thanks,

	Ingo

      parent reply	other threads:[~2018-06-26  7:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-25 10:25 [PATCH] x86-64: use 32-bit XOR to zero registers Jan Beulich
2018-06-25 16:33 ` Randy Dunlap
2018-06-25 16:49   ` hpa
2018-06-26  6:32   ` Jan Beulich
2018-06-26 11:38     ` Henrique de Moraes Holschuh
2018-07-26  9:19       ` Pavel Machek
2018-07-26 11:45         ` Ingo Molnar
2018-07-26 18:17           ` Pavel Machek
2018-07-26 19:06             ` Ingo Molnar
2018-06-26  7:17 ` Ingo Molnar [this message]

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