From: Paolo Bonzini <pbonzini@redhat.com>
To: Stefan Fritsch <sf@sfritsch.de>
Cc: zhanghailiang <zhang.zhanghailiang@huawei.com>,
hangaohuai@huawei.com, kvm@vger.kernel.org, gleb@kernel.org,
peter.huangpeng@huawei.com
Subject: Re: [PATCH] KVM: add KVM_CAP_VMX_APICV to advertise hardware apic-v support
Date: Thu, 18 Dec 2014 10:23:44 +0100 [thread overview]
Message-ID: <54929D20.60505@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1412180954080.25777@eru.sfritsch.de>
On 18/12/2014 09:57, Stefan Fritsch wrote:
> I think setting the "recommended" bits to be best for the host where the
> VM is first started should always be ok. When it migrates to a different
> host, performance may not be optimal but otherwise it will work just fine.
> After all, non-optimal performance is not different from the current
> situation.
What if, due to a bug, a guest mysteriously starts failing on some hosts
of a cluster but not others? This is really not a path you want to walk
down.
Paolo
next prev parent reply other threads:[~2014-12-18 9:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-11 8:07 [PATCH] KVM: add KVM_CAP_VMX_APICV to advertise hardware apic-v support zhanghailiang
2014-12-11 11:48 ` Paolo Bonzini
2014-12-11 12:53 ` zhanghailiang
2014-12-11 13:28 ` Radim Krčmář
2014-12-11 17:15 ` Paolo Bonzini
2014-12-17 22:17 ` Stefan Fritsch
2014-12-18 3:37 ` zhanghailiang
2014-12-18 8:30 ` Paolo Bonzini
2014-12-18 8:57 ` Stefan Fritsch
2014-12-18 9:23 ` Paolo Bonzini [this message]
2014-12-11 13:08 ` Radim Krčmář
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