From: Paolo Bonzini <pbonzini@redhat.com>
To: Eduardo Habkost <ehabkost@redhat.com>,
kvm@vger.kernel.org, rkrcmar@redhat.com,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Gleb Natapov <gleb@kernel.org>, Boris Petkov <bp@suse.de>,
Tony Luck <tony.luck@intel.com>,
Andi Kleen <andi.kleen@intel.com>,
Ashok Raj <ashok.raj@intel.com>,
libvir-list@redhat.com, Jiri Denemark <jdenemar@redhat.com>
Subject: Re: [PATCH v2 3/3] KVM: VMX: enable guest access to LMCE related MSRs
Date: Mon, 20 Jun 2016 08:55:40 +0200 [thread overview]
Message-ID: <da441ea3-1adf-13f7-0254-82814d5055aa@redhat.com> (raw)
In-Reply-To: <20160620014951.3kk45qtar7tohj6c@hz-desktop>
On 20/06/2016 03:49, Haozhong Zhang wrote:
> Thanks for the explanation!
>
> If we disable LMCE in QEMU by default (even for -cpu host), will it
> still be a problem? That is,
>
> - pc-2.7 can continue to run on old kernels unless users explicitly
> require LMCE
>
> - existing libvirt VM configurations can continue to work on pc-2.7
> because LMCE is not specified in those configurations and are
> disabled by default (i.e. no requirement for new kernels)
>
> - existing QEMU configurations/scripts using pc alias can continue to
> work on pc-27 for the same reason above.
Yes, that would be fine. "-cpu host" can leave LMCE enabled if
supported by the kernel.
Paolo
prev parent reply other threads:[~2016-06-20 7:13 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-16 6:05 [PATCH v2 0/3] Add KVM support for Intel local MCE Haozhong Zhang
2016-06-16 6:05 ` [PATCH v2 1/3] KVM: VMX: move msr_ia32_feature_control to vcpu_vmx Haozhong Zhang
2016-06-16 11:49 ` Borislav Petkov
2016-06-16 11:57 ` Paolo Bonzini
2016-06-16 11:57 ` Haozhong Zhang
2016-06-16 6:05 ` [PATCH v2 2/3] KVM: VMX: validate individual bits of guest MSR_IA32_FEATURE_CONTROL Haozhong Zhang
2016-06-16 9:55 ` Paolo Bonzini
2016-06-16 11:21 ` Haozhong Zhang
2016-06-16 10:01 ` Paolo Bonzini
2016-06-16 11:16 ` Haozhong Zhang
2016-06-16 11:19 ` Paolo Bonzini
2016-06-16 11:29 ` Haozhong Zhang
2016-06-16 6:05 ` [PATCH v2 3/3] KVM: VMX: enable guest access to LMCE related MSRs Haozhong Zhang
2016-06-16 10:04 ` Paolo Bonzini
2016-06-16 10:49 ` Haozhong Zhang
2016-06-16 14:55 ` Eduardo Habkost
2016-06-17 1:11 ` Haozhong Zhang
2016-06-17 17:15 ` Eduardo Habkost
2016-06-20 1:49 ` Haozhong Zhang
2016-06-20 6:55 ` Paolo Bonzini [this message]
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