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    SubjectRe: [PATCH 1/2] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
    On Wed, May 02, 2018 at 11:00:55AM +0200, Laurent Dufour wrote:
    > On 02/05/2018 09:54, Ganesh Mahendran wrote:
    > > Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This
    > > enables Speculative Page Fault handler.
    > >
    > > Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
    > > ---
    > > This patch is on top of Laurent's v10 spf
    > > ---
    > > arch/arm64/Kconfig | 1 +
    > > 1 file changed, 1 insertion(+)
    > >
    > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
    > > index eb2cf49..cd583a9 100644
    > > --- a/arch/arm64/Kconfig
    > > +++ b/arch/arm64/Kconfig
    > > @@ -144,6 +144,7 @@ config ARM64
    > > select SPARSE_IRQ
    > > select SYSCTL_EXCEPTION_TRACE
    > > select THREAD_INFO_IN_TASK
    > > + select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP
    >
    > There is no need to depend on SMP here as the upper
    > CONFIG_SPECULATIVE_PAGE_FAULT is depending on SMP.

    Additionally, since commit:

    4b3dc9679cf77933 ("arm64: force CONFIG_SMP=y and remove redundant #ifdefs")

    ... arm64 is always SMP.

    Thanks,
    Mark.

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