[edk2-devel] The status of ACPI S4 support in OVMF

[Laszlo Ersek]

On 04/19/21 11:54, Gary Lin via groups.io wrote:
> Hi,
>
> Years ago, the bug(*) for PEI variable driver was filed against OVMF
> and it used to be one reason to block S4 support in OVMF. The bug is
> fixed now, and there are several MemTypeInfo fixes merged into OVMF.
>
> I'm curious about the current status of S4 support in OVMF. Is it
> still considered as unsupported due to some other bugs?
>
> Thanks,
>
> Gary Lin
>
> (*) https://bugzilla.tianocore.org/show_bug.cgi?id=386

I recall the last related discussion from February:

* [edk2-devel] [PATCH 0/2] Improve hibernation safety

  https://edk2.groups.io/g/devel/message/71790
  https://listman.redhat.com/archives/edk2-devel-archive/2021-February/msg00842.html
  http://mid.mail-archive.com/20210218200953.20943-1-graf@amazon.com

No patches needed to be merged (Alex was missing some commits that had
been upstreamed by then).

My understanding is that S4 should work at this point, although I've
never really tested it myself.

Thanks
Laszlo



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