Old operating systems would like to have a rev1 (ACPI 1.0) FADT, but
new operating systems would like to have rev3 (ACPI 2.0).
Since old operating systems do not know about XSDTs, the
solution is to point the RSDT to a v1 FADT and the XSDT to a
rev3 FADT.


Paolo Bonzini (2):
  seabios: build RSDT from XSDT
  seabios: create rev1 FADT in compatibility RSDT

 src/fw/paravirt.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/std/acpi.h    | 11 +++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)

-- 
2.13.3


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On Wed, Jul 26, 2017 at 11:42:33AM +0200, Paolo Bonzini wrote:
> Old operating systems would like to have a rev1 (ACPI 1.0) FADT, but
> new operating systems would like to have rev3 (ACPI 2.0).
> Since old operating systems do not know about XSDTs, the
> solution is to point the RSDT to a v1 FADT and the XSDT to a
> rev3 FADT.

So I think for 2.10 Igor's patch is much smaller and only
touches QEMU, I'm inclined to merge just that one.
Let's discuss this after 2.10 is out.

> 
> Paolo Bonzini (2):
>   seabios: build RSDT from XSDT
>   seabios: create rev1 FADT in compatibility RSDT
> 
>  src/fw/paravirt.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  src/std/acpi.h    | 11 +++++++++
>  2 files changed, 78 insertions(+), 1 deletion(-)
> 
> -- 
> 2.13.3