Re: [PATCH 4/6] x86/kasan: Prepare clear_pgds() to switch to <asm-generic/pgtable-nop4d.h>

[Kirill A. Shutemov]

On Wed, Mar 22, 2017 at 08:31:36AM +0100, Ingo Molnar wrote:
> * Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> wrote:
> > On 03/17/2017 09:55 PM, Kirill A. Shutemov wrote:
> > > With folded p4d, pgd_clear() is nop. Change clear_pgds() to use
> > > p4d_clear() instead.
> > > 
> > 
> > You could probably just use set_pgd(pgd_offset_k(start), __pgd(0)); instead of pgd_clear()
> > as we already do in arm64.
> > It's basically pgd_clear() except it's not a nop wih p4d folded.
> 
> Makes sense. Kirill, if you agree, mind spinning a v2 patch?

I can re-spin, if you want. But honestly, I don't think such constructs
help readability.

-- 
 Kirill A. Shutemov