From: Dave Hansen <dave.hansen@intel.com>
To: Liang Li <liang.z.li@intel.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: gleb@kernel.org, pbonzini@redhat.com, mtosatt@redhat.com,
tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
x86@kernel.org, joro@8bytes.org, yang.z.zhang@intel.com,
Xudong Hao <xudong.hao@intel.com>
Subject: Re: [v6] kvm/fpu: Enable fully eager restore kvm FPU
Date: Thu, 23 Apr 2015 08:28:26 -0700 [thread overview]
Message-ID: <55390F9A.2070808@intel.com> (raw)
In-Reply-To: <1429823583-3226-1-git-send-email-liang.z.li@intel.com>
On 04/23/2015 02:13 PM, Liang Li wrote:
> When compiling kernel on westmere, the performance of eager FPU
> is about 0.4% faster than lazy FPU.
Do you have an theory why this is? What does the regression come from?
next prev parent reply other threads:[~2015-04-23 15:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-23 21:13 [v6] kvm/fpu: Enable fully eager restore kvm FPU Liang Li
2015-04-23 10:40 ` Paolo Bonzini
2015-04-23 11:25 ` Jan Kiszka
2015-04-23 15:28 ` Dave Hansen [this message]
2015-04-23 20:28 ` H. Peter Anvin
2015-04-24 1:16 ` Zhang, Yang Z
2015-04-24 7:44 ` Paolo Bonzini
2015-04-24 7:46 ` Zhang, Yang Z
2015-04-24 7:55 ` Paolo Bonzini
2015-04-24 8:08 ` Zhang, Yang Z
2015-04-23 22:57 ` Wanpeng Li
2015-04-24 2:21 ` Rik van Riel
2015-04-23 23:17 ` Wanpeng Li
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