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    SubjectRe: [RFC v3][PATCH 2/2] intel_txt: Intel(R) TXT and tboot kernel support
    > > > > +   ((void(*)(void))(long)tboot_shared->shutdown_entry)();
    >
    > be better? Or is shutdown_entry always mapped into [0..2GB) on

    0..4GB and this code runs in a identity mapping.

    > 64-bit? Even then, not sign-extending RIP addresses is wrong and
    > invites bugs/restrictions.

    You never have to sign extend when going from 32bit to 64bit
    on x86-64.

    -andi

    --
    ak@linux.intel.com -- Speaking for myself only.


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