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    SubjectRe: [PATCH v5 32/32] x86/mm: Add support to make use of Secure Memory Encryption
    On Tue, May 30, 2017 at 09:38:36AM -0500, Tom Lendacky wrote:
    > In this case we're running identity mapped and the "on" constant ends up
    > as kernel address (0xffffffff81...) which results in a segfault.

    Would

    static const char *__on_str = "on";

    ...

    if (!strncmp(buffer, __pa_nodebug(__on_str), 2))
    ...

    work?

    __phys_addr_nodebug() seems to pay attention to phys_base and
    PAGE_OFFSET and so on...

    I'd like to avoid that rip-relative address finding in inline asm which
    looks fragile to me.

    Thanks.

    --
    Regards/Gruss,
    Boris.

    Good mailing practices for 400: avoid top-posting and trim the reply.

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