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Re: [Qemu-devel] CPU hotplug using SMM with QEMU+OVMF


From: Paolo Bonzini
Subject: Re: [Qemu-devel] CPU hotplug using SMM with QEMU+OVMF
Date: Thu, 15 Aug 2019 18:04:03 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 15/08/19 11:55, Yao, Jiewen wrote:
> Hi Paolo
> I am not sure what do you mean - "You do not need a reset vector ...".
> If so, where is the first instruction of the new CPU in the virtualization 
> environment?
> Please help me understand that at first. Then we can continue the discussion.

The BSP starts running from 0xFFFFFFF0.  APs do not start running at all
and just sit waiting for an INIT-SIPI-SIPI sequence.  Please see my
proposal in the reply to Laszlo.

Paolo



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