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From: Paolo Bonzini <pbonzini@redhat.com>
To: zhenwei pi <pizhenwei@bytedance.com>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	Kele Huang <huangkele@bytedance.com>
Cc: chaiwen.cc@bytedance.com, xieyongji@bytedance.com,
	dengliang.1214@bytedance.com, wanpengli@tencent.com,
	seanjc@google.com, Vitaly Kuznetsov <vkuznets@redhat.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] KVM: x86: SVM: don't expose PV_SEND_IPI feature with AVIC
Date: Mon, 8 Nov 2021 12:18:11 +0100	[thread overview]
Message-ID: <c3c84251-44b0-cff1-9607-b3686f1196b0@redhat.com> (raw)
In-Reply-To: <ad6b3ef5-4928-681c-a0cf-5a1095654566@bytedance.com>

On 11/8/21 12:14, zhenwei pi wrote:
> I don't yet know if there is a solution to this which doesn't
> involve some management software decision (e.g libvirt or higher).

If we use a new hint, there's no problems with migration from/to older 
QEMU and libvirt's host-model/host-passthrough would pick up the bit 
automatically.

(I'm not sure if libvirt knows that hints can change across migration, 
though).

Paolo


  reply	other threads:[~2021-11-08 11:20 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-08  9:59 Kele Huang
2021-11-08 10:30 ` Paolo Bonzini
2021-11-08 11:08   ` Maxim Levitsky
2021-11-08 11:14     ` zhenwei pi
2021-11-08 11:18       ` Paolo Bonzini [this message]
2021-11-16  2:48     ` Wanpeng Li
2021-11-16  2:56       ` zhenwei pi
2021-11-16  9:06         ` Chao Gao
2021-11-16  9:30           ` [External] " 黄科乐
2021-11-16  9:30           ` Wanpeng Li
     [not found]           ` <CAKUug92xp7mU_KB66jGtdYRhgQpgfCm67r+3kMOMdbrGOrTQcA@mail.gmail.com>
2021-11-16 15:57             ` [External] " Sean Christopherson
2021-11-08 10:45 ` Vitaly Kuznetsov
2021-11-16  2:04 ` Wanpeng Li

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