[PATCH v2 2/3] x86: query dynamic DEBUG_PAGEALLOC setting

[Thomas Gleixner]

On Wed, 27 Jan 2016, Christian Borntraeger wrote:

> We can use debug_pagealloc_enabled() to check if we can map
> the identity mapping with 2MB pages. We can also add the state
> into the dump_stack output.
> 
> The patch does not touch the code for the 1GB pages, which ignored
> CONFIG_DEBUG_PAGEALLOC. Do we need to fence this as well?
> 
> Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com>

Reviewed-by: Thomas Gleixner <tglx at linutronix.de>