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Re: [PATCH 03/13] microvm: add isa-acpi device
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From: |
Gerd Hoffmann |
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Subject: |
Re: [PATCH 03/13] microvm: add isa-acpi device |
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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?
cheers,
Gerd
[PATCH 02/13] acpi: factor out acpi_dsdt_add_fw_cfg(), Gerd Hoffmann, 2020/03/19
[PATCH 13/13] microvm/acpi: use GSI 16-23 for virtio, Gerd Hoffmann, 2020/03/19