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Re: [PATCH 03/13] microvm: add isa-acpi device

From: Gerd Hoffmann
Subject: Re: [PATCH 03/13] microvm: add isa-acpi device
Date: Fri, 20 Mar 2020 09:22:58 +0100

On Thu, Mar 19, 2020 at 02:42:18PM +0100, Igor Mammedov wrote:
> On Thu, 19 Mar 2020 09:01:07 +0100
> Gerd Hoffmann <address@hidden> wrote:
> > Minimal ACPI device for PCI-less machines like microvm.
> it seems that x86 kernel is able to boot on hw-reduced acpi systems
> (but I haven't really tested any distro kernel, not sure how usable NEMU is)
> Maybe reusing hw/acpi/generic_event_device.c (which was borrowed
> for NEMU effort) would be better since guest won't have to initialize
> not necessary interfaces and QEMU could implement simpler hw impl
> compared to full ACPI with GPEs, SCIs & co.

I see the generic event device has support for powerdown request events,
good.  But I'm wondering how entering S5 state (aka poweroff) would
work then?


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