Re: [PATCH 2/7] x86/mm: Unify pgtable_l5_enabled usage in early boot code

[Thomas Gleixner]

On Fri, 18 May 2018, Kirill A. Shutemov wrote:

> Usually pgtable_l5_enabled is defined using cpu_feature_enabled().
> cpu_feature_enabled() is not available in early boot code. We use
> several different preprocessor tricks to get around it. It's messy.
> 
> Unify them all.
> 
> If cpu_feature_enabled() is not yet available, USE_EARLY_PGTABLE_L5 can
> be defined before all includes. It makes pgtable_l5_enabled rely on
> __pgtable_l5_enabled variable instead. This approach fits all early
> users.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>

Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>