Re: [PATCH] x86/ACPI/boot: Use FADT version to check support for online capable

[Zhang, Rui]

On Thu, 2023-03-30 at 10:41 +0200, Borislav Petkov wrote:
> On Thu, Mar 30, 2023 at 01:10:07AM +0000, Zhang, Rui wrote:
> > In https://uefi.org/sites/default/files/resources/ACPI_6_2.pdf,
> > MADT revision is 4.
> > 
> > In 
> > https://uefi.org/sites/default/files/resources/ACPI%206_2_A_Sept29.pdf,
> > MADT revision is 45.
> 
> This is a hack to fix some ACPI erratum or whatever.
> 
> > In 
> > https://uefi.org/sites/default/files/resources/ACPI_6_2_B_final_Jan30.pdf
> > MADT revision is 5.
> > 
> > So you probably mean 6.2a has MADT revision "45" here?
> 
> No, forget MADT.
> 
> The thing should check whether the ACPI revision is 6.3. And this is
> what it does below.

Yes, I agree.
As the original changelog mentioned that "ACPI spec 6.2b has MADT
revision 45", I was just checking if that statement is accurate or not.

thanks,
rui