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

* Thomas Gleixner <tglx@linutronix.de> wrote:

> On Mon, 27 Nov 2017, Ingo Molnar wrote:
> > * Thomas Gleixner <tglx@linutronix.de> 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.
>
> Yes.

Ok, new version pushed out to -tip:WIP.x86/mm.

Thanks,

Ingo

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