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
prev 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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