From: "H. Peter Anvin" <hpa@zytor.com>
To: KY Srinivasan <kys@microsoft.com>
Cc: Jason Wang <jasowang@redhat.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"x86@kernel.org" <x86@kernel.org>,
"gleb@redhat.com" <gleb@redhat.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/4] x86: properly handle kvm emulation of hyperv
Date: Tue, 23 Jul 2013 07:48:29 -0700 [thread overview]
Message-ID: <51EE97BD.4050402@zytor.com> (raw)
In-Reply-To: <bd93bc49300a4d99996cc4f57c19a008@SN2PR03MB061.namprd03.prod.outlook.com>
On 07/23/2013 06:55 AM, KY Srinivasan wrote:
>
> This strategy of hypervisor detection based on some detection order IMHO is not
> a robust detection strategy. The current scheme works since the only hypervisor emulated
> (by other hypervisors happens to be Hyper-V). What if this were to change.
>
One strategy would be to pick the *last* one in the CPUID list, since
the ones before it are logically the one(s) being emulated...
-hpa
next prev parent reply other threads:[~2013-07-23 14:49 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-23 9:41 [PATCH 1/4] x86: introduce hypervisor_cpuid_base() Jason Wang
2013-07-23 9:41 ` [PATCH 2/4] xen: switch to use hypervisor_cpuid_base() Jason Wang
2013-07-23 9:41 ` Jason Wang
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 15:55 ` Konrad Rzeszutek Wilk
2013-07-23 15:55 ` Konrad Rzeszutek Wilk
2013-07-23 9:41 ` [PATCH 3/4] kvm: " Jason Wang
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 9:41 ` [PATCH 4/4] x86: properly handle kvm emulation of hyperv Jason Wang
2013-07-23 11:17 ` Paolo Bonzini
2013-07-23 13:55 ` KY Srinivasan
2013-07-23 14:48 ` H. Peter Anvin [this message]
2013-07-23 17:45 ` KY Srinivasan
2013-07-23 18:45 ` H. Peter Anvin
2013-07-23 22:42 ` KY Srinivasan
2013-07-24 4:37 ` Jason Wang
2013-07-24 4:48 ` H. Peter Anvin
2013-07-24 6:54 ` Jason Wang
2013-07-24 7:06 ` Paolo Bonzini
2013-07-24 14:01 ` KY Srinivasan
2013-07-24 15:14 ` H. Peter Anvin
2013-07-24 19:05 ` KY Srinivasan
2013-07-24 19:05 ` KY Srinivasan
2013-07-24 21:37 ` H. Peter Anvin
2013-07-25 7:59 ` Paolo Bonzini
2013-07-25 8:12 ` Jason Wang
2013-07-23 10:04 ` [PATCH 1/4] x86: introduce hypervisor_cpuid_base() H. Peter Anvin
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 16:03 ` H. Peter Anvin
2013-07-24 4:44 ` Jason Wang
2013-07-24 4:47 ` H. Peter Anvin
2013-07-23 13:48 ` Gleb Natapov
2013-07-24 4:34 ` Jason Wang
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