Re: [Xen-devel] [PATCH 00/14] Xen ARM DomU ACPI support

[Julien Grall <julien.grall@xxxxxxx>]

On 01/06/16 15:56, Shannon Zhao wrote:
> On 2016年06月01日 22:36, Boris Ostrovsky wrote:
> > On 06/01/2016 09:53 AM, Shannon Zhao wrote:
> > > > Actually I think there are two tables can be reused: RSDP and XSDT(while
> > > > which are smaller codes, I don't think it needs to be mixed with
> > > > others). The other tables are arch specific because the contents are
> > > > totally different. So if we want to add some generic generating table
> > > > funtions, we might pass a lot of arch specific information to these
> > > > functions which looks like inconvenient and ugly.
> > > > And this situation for x86 and ARM is similar with QEMU. You can have a
> > > > look at hw/arm/virt-acpi-build.c and hw/i386/acpi-build.c in QEMU source
> > > > code. The two only reuse the build_rsdt() function.
> > Are these differences due to architecture or ACPI version? I can see
> > that ARM uses 5.1 at least but not sure about i386.
I think i386 is using ACPI v1.0. They are using AcpiFadtDescriptorRev1 
whilst ARM is using ACPIFadtDescriptorRes5_1.
The difference between the version can be found in hw/acpi/acpi-defs.h

Regards,

--
Julien Grall

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