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    SubjectRe: [PATCH v2 1/5] kasan, x86: move KASAN_SHADOW_OFFSET to the arch Kconfig
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    On Fri, 2015-05-15 at 16:59 +0300, Andrey Ryabinin wrote:
    > --- a/arch/x86/Kconfig
    > +++ b/arch/x86/Kconfig

    > +config KASAN_SHADOW_OFFSET
    > + hex
    > + default 0xdffffc0000000000

    This sets CONFIG_KASAN_SHADOW_OFFSET for _all_ X86 configurations,
    doesn't it?

    > --- a/lib/Kconfig.kasan
    > +++ b/lib/Kconfig.kasan

    > -config KASAN_SHADOW_OFFSET
    > - hex
    > - default 0xdffffc0000000000 if X86_64

    While here it used to depend, at least, on HAVE_ARCH_KASAN. But grepping
    the tree shows the two places where CONFIG_KASAN_SHADOW_OFFSET is
    currently used are guarded by #ifdef CONFIG_KASAN. So perhaps the
    default line should actually read
    default 0xdffffc0000000000 if KASAN

    after the move. Would that work?


    Paul Bolle



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