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Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first fla

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash
Date: Wed, 9 Mar 2016 15:07:24 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

On 09/03/2016 15:06, Laszlo Ersek wrote:
> However: despite reusing the core SMM code identically in the guest,
> there is at least one stark behavioral difference: in QEMU the SMI is
> raised only on the processor that triggers it. This exercises paths in
> the core SMM code where processors have to count down timeouts and bring
> each other in, and these busy loops are very visible to an interactive
> user in certain circumstances.

Right, and that's unfortunately something that's hard to change because
SeaBIOS relies on it. :((


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