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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. :((
Paolo
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, (continued)
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Paolo Bonzini, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Ard Biesheuvel, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Ard Biesheuvel, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Paolo Bonzini, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Ard Biesheuvel, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Paolo Bonzini, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Ard Biesheuvel, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Paolo Bonzini, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Peter Maydell, 2016/03/08
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Laszlo Ersek, 2016/03/09
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Laszlo Ersek, 2016/03/09
- Re: [Qemu-devel] [PATCH 0/4] virt: provide secure-only RAM and first flash, Peter Maydell, 2016/03/08