From: Dave Hansen <dave.hansen@intel.com>
To: Leonid Shatz <leonid.shatz@ravellosystems.com>,
"'Ingo Molnar'" <mingo@kernel.org>,
linux-kernel@vger.kernel.org,
"'Yu-cheng Yu'" <yu-cheng.yu@intel.com>,
"'Andy Lutomirski'" <luto@amacapital.net>,
"'Borislav Petkov'" <bp@alien8.de>,
"'Fenghua Yu'" <fenghua.yu@intel.com>,
"'H. Peter Anvin'" <hpa@zytor.com>,
"'Linus Torvalds'" <torvalds@linux-foundation.org>,
"'Oleg Nesterov'" <oleg@redhat.com>,
"'Peter Zijlstra'" <peterz@infradead.org>,
"'Quentin Casasnovas'" <quentin.casasnovas@oracle.com>,
"'Ravi V. Shankar'" <ravi.v.shankar@intel.com>,
"'Sai Praneeth Prakhya'" <sai.praneeth.prakhya@intel.com>,
"'Thomas Gleixner'" <tglx@linutronix.de>
Cc: liran.alon@ravellosystems.com, mendel.aizner@ravellosystems.com,
"'Elazar Leibovich'" <elazar.leibovich@ravellosystems.com>,
"'Eyal Moscovici'" <eyal.moscovici@ravellosystems.com>,
gil.hoffer@ravellosystems.com
Subject: Re: Linux patch disabling AVX when eagerfpu is turned off - possibly not required
Date: Thu, 21 Jan 2016 12:08:39 -0800 [thread overview]
Message-ID: <56A13AC7.2040601@intel.com> (raw)
In-Reply-To: <02fd01d15437$233056c0$69910440$@ravellosystems.com>
On 01/21/2016 02:33 AM, Leonid Shatz wrote:
> In view of above findings we would like to suggest to double check if
> disabling AVX together with "eagerfpu off" is actually required and is a
> real necessity. It would be helpful to consult with Intel engineers
> regarding related design details.
Hi Leonid,
Thanks for the report!
Are you aware of any actual eagerfpu=off use in practice, or is this
mostly a theoretical concern?
next prev parent reply other threads:[~2016-01-21 20:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-21 10:33 Linux patch disabling AVX when eagerfpu is turned off - possibly not required Leonid Shatz
2016-01-21 20:08 ` Dave Hansen [this message]
2016-01-21 20:11 ` H. Peter Anvin
2016-01-21 21:03 ` Andy Lutomirski
2016-01-21 21:03 ` Yu-cheng Yu
2016-01-21 21:08 ` H. Peter Anvin
2016-01-21 21:12 ` Yu-cheng Yu
2016-01-21 21:19 ` Leonid Shatz
2016-01-21 21:22 ` H. Peter Anvin
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