From: Borislav Petkov <bp@alien8.de>
To: "Luc, Piotr" <Piotr.Luc@intel.com>
Cc: "pbonzini@redhat.com" <pbonzini@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"he.chen@linux.intel.com" <he.chen@linux.intel.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"x86@kernel.org" <x86@kernel.org>,
"hpa@zytor.com" <hpa@zytor.com>,
"mingo@redhat.com" <mingo@redhat.com>,
"Kang, Luwei" <luwei.kang@intel.com>,
"rkrcmar@redhat.com" <rkrcmar@redhat.com>
Subject: Re: [PATCH] x86/cpuid: expose AVX512_4VNNIW and AVX512_4FMAPS features to kvm guest
Date: Mon, 31 Oct 2016 10:53:12 +0100 [thread overview]
Message-ID: <20161031095312.dzv3rj2fqgjjsy7w@pd.tnic> (raw)
In-Reply-To: <1477905033.32008.5.camel@intel.com>
On Mon, Oct 31, 2016 at 09:15:43AM +0000, Luc, Piotr wrote:
> I think that in v4.9-rc2 the CPUID[7,0].edx bits can be masked out by
> applying noxsave to cmdline. Using directly cpu_count will result in
> passing the bits in edx to a guest directly while the xsaveopt and rest
> of AVX512 features bits will be cleared.
Errr, I can't parse that reading it backwards and forwards. Please
elaborate.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2016-10-31 9:53 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-28 9:12 [PATCH] x86/cpuid: expose AVX512_4VNNIW and AVX512_4FMAPS features to kvm guest He Chen
2016-10-28 9:31 ` Paolo Bonzini
2016-10-28 9:46 ` He Chen
2016-10-28 9:54 ` Paolo Bonzini
2016-10-28 9:55 ` He Chen
2016-10-28 10:13 ` Luc, Piotr
2016-10-28 10:17 ` Paolo Bonzini
2016-10-28 11:08 ` Borislav Petkov
2016-10-28 12:07 ` Paolo Bonzini
2016-10-28 12:21 ` Borislav Petkov
2016-10-29 12:21 ` Paolo Bonzini
2016-10-29 12:25 ` Borislav Petkov
2016-10-29 12:36 ` Paolo Bonzini
2016-10-29 12:53 ` Borislav Petkov
2016-10-29 13:20 ` Paolo Bonzini
2016-10-31 9:15 ` Luc, Piotr
2016-10-31 9:53 ` Borislav Petkov [this message]
2016-10-31 10:18 ` Luc, Piotr
2016-10-31 10:30 ` Borislav Petkov
2016-10-31 10:47 ` Paolo Bonzini
2016-10-31 11:05 ` Borislav Petkov
2016-10-31 11:41 ` Paolo Bonzini
2016-11-01 7:48 ` He Chen
2016-11-01 8:46 ` Borislav Petkov
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