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

[Borislav Petkov]

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.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette