Re: [PATCH mm v4 29/39] kasan, page_alloc: allow skipping memory init for HW_TAGS

[Andrey Konovalov <andreyknvl@xxxxxxxxx>]

On Tue, Dec 21, 2021 at 1:30 PM Marco Elver <elver@xxxxxxxxxx> wrote:
>
> On Mon, Dec 20, 2021 at 11:02PM +0100, andrey.konovalov@xxxxxxxxx wrote:
> [...]
> >  /* Room for N __GFP_FOO bits */
> >  #define __GFP_BITS_SHIFT (24 +                                       \
> > +                       IS_ENABLED(CONFIG_KASAN_HW_TAGS) +    \
> >                         IS_ENABLED(CONFIG_KASAN_HW_TAGS) +    \
> >                         IS_ENABLED(CONFIG_KASAN_HW_TAGS) +    \
> >                         IS_ENABLED(CONFIG_LOCKDEP))
>
> Does '3 * IS_ENABLED(CONFIG_KASAN_HW_TAGS)' work?

Yes, will do in v5.