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Re: [PATCH v3 0/8] Generalize start-powered-off property from ARM

From: Peter Maydell
Subject: Re: [PATCH v3 0/8] Generalize start-powered-off property from ARM
Date: Thu, 30 Jul 2020 16:47:30 +0100

On Thu, 23 Jul 2020 at 03:57, Thiago Jung Bauermann
<bauerman@linux.ibm.com> wrote:
> The ARM code has a start-powered-off property in ARMCPU, which is a
> subclass of CPUState. This property causes arm_cpu_reset() to set
> CPUState::halted to 1, signalling that the CPU should start in a halted
> state. Other architectures also have code which aim to achieve the same
> effect, but without using a property.
> The ppc/spapr version has a bug where QEMU does a KVM_RUN on the vcpu
> before cs->halted is set to 1, causing the vcpu to run while it's still in
> an unitialized state (more details in patch 3).
> Peter Maydell mentioned the ARM start-powered-off property and
> Eduardo Habkost suggested making it generic, so this patch series does
> that, for all cases which I was able to find via grep in the code.

Acked-by: Peter Maydell <peter.maydell@linaro.org>
for the Arm bits if you want to take the bug-fixing parts of
this series in via some other tree. (I think they've all been

-- PMM

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