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Re: [RFC PATCH] hw/arm/virt: Support NMI injection

From: Marc Zyngier
Subject: Re: [RFC PATCH] hw/arm/virt: Support NMI injection
Date: Wed, 29 Jan 2020 09:04:13 +0000
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On 2020-01-29 02:44, Alexey Kardashevskiy wrote:
On 28/01/2020 17:48, Gavin Shan wrote:
but a NMI is injected
through LAPIC on x86. So I'm not sure what architect (system reset on
ppc or injecting NMI on x86) aarch64 should follow.

I'd say whatever triggers in-kernel debugger or kdump but I am not
familiar with ARM at all :)

All that is completely OS specific, and has no relation to the architecture.
As I mentioned in another part of the thread, the closest thing to this
would be to implement SDEI together with an IMPDEF mechanism to enter it
(or even generate a RAS error).

On the other hand, SDEI is pretty horrible, and means either KVM or QEMU
acting like a firmware for the guest. To say that I'm not keen is a massive

Jazz is not dead. It just smells funny...

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