Re: [PATCH v2 2/2] sparc64: Fix pagetable freeing for hugepage regions

[David Miller]

From: Nitin Gupta <nitin.m.gupta@xxxxxxxxxx>
Date: Thu, 23 Jun 2016 15:05:36 -0700

> 8M pages now allocate page tables till PMD level only.
> So, when freeing page table for 8M hugepage backed region,
> make sure we don't try to access non-existent PTE level.
> 
> Signed-off-by: Nitin Gupta <nitin.m.gupta@xxxxxxxxxx>

The manner in which you have submitted this change breaks
bisectability.

The "problem" you are fixing here is introduced by you in patch #1.

You need to combine these two changes together, otherwise there is
an intermediate state where the kernel is broken by your changes.