linux-kernel - Re: [PATCH v3] KVM: LAPIC: Recalculate apic map in batch

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Message-ID: <3e025538-297b-74e5-f1b1-2193b614978b@redhat.com>
Date:   Fri, 19 Jun 2020 16:10:43 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Igor Mammedov <imammedo@...hat.com>,
        Wanpeng Li <kernellwp@...il.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>
Subject: Re: [PATCH v3] KVM: LAPIC: Recalculate apic map in batch

On 19/06/20 14:36, Igor Mammedov wrote:
> qemu-kvm -m 2G -smp 4,maxcpus=8  -monitor stdio
> (qemu) device_add qemu64-x86_64-cpu,socket-id=4,core-id=0,thread-id=0
> 
> in guest fails with:
> 
>  smpboot: do_boot_cpu failed(-1) to wakeup CPU#4
> 
> which makes me suspect that  INIT/SIPI wasn't delivered
> 
> Is it a know issue?
> 

No, it isn't.  I'll revert.

Paolo