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    SubjectRe: [PATCH v9 01/24] mm: Introduce CONFIG_SPECULATIVE_PAGE_FAULT
    On Tue, 13 Mar 2018, Laurent Dufour wrote:

    > This configuration variable will be used to build the code needed to
    > handle speculative page fault.
    >
    > By default it is turned off, and activated depending on architecture
    > support.
    >
    > Suggested-by: Thomas Gleixner <tglx@linutronix.de>
    > Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
    > ---
    > mm/Kconfig | 3 +++
    > 1 file changed, 3 insertions(+)
    >
    > diff --git a/mm/Kconfig b/mm/Kconfig
    > index abefa573bcd8..07c566c88faf 100644
    > --- a/mm/Kconfig
    > +++ b/mm/Kconfig
    > @@ -759,3 +759,6 @@ config GUP_BENCHMARK
    > performance of get_user_pages_fast().
    >
    > See tools/testing/selftests/vm/gup_benchmark.c
    > +
    > +config SPECULATIVE_PAGE_FAULT
    > + bool

    Should this be configurable even if the arch supports it?

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