[PATCH v2] x86/mm/kaiser: Disable global pages by default with KAISER

[Ingo Molnar]

* Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> On Sun, 26 Nov 2017, Ingo Molnar wrote:
> >  * Disable global pages for anything using the default
> >  * __PAGE_KERNEL* macros.
> >  *
> >  * PGE will still be enabled and _PAGE_GLOBAL may still be used carefully
> >  * for a few selected kernel mappings which must be visible to userspace,
> >  * when KAISER is enabled, like the entry/exit code and data.
> >  */
> > #ifdef CONFIG_KAISER
> > #define __PAGE_KERNEL_GLOBAL	0
> > #else
> > #define __PAGE_KERNEL_GLOBAL	_PAGE_GLOBAL
> > #endif
> > 
> > ... and I've added your Reviewed-by tag which I assume now applies?
> 
> Ideally we replace the whole patch with the __supported_pte_mask one which
> I posted as a delta patch.

Yeah, so I squashed these two patches:

  09d76fc407e0: x86/mm/kaiser: Disable global pages by default with KAISER
  bac79112ee4a: x86/mm/kaiser: Simplify disabling of global pages

into a single patch, which results in the single patch below, with an updated 
changelog that reflects the cleanups. I kept Dave's authorship and credited you 
for the simplification.

Note that the squashed commit had some whitespace noise which I skipped, further 
simplifying the patch.

Is it OK this way? If yes then I'll reshuffle the tree with this variant.

Thanks,

	Ingo

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