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    SubjectRe: [PATCH 07/12] perf_events: add LBR software filter support for Intel X86
    > just with self-modifying (JIT) code, though the depth of LBR is such that
    > this is very unlikely (it must happen in the last 16 branches before the
    > PMU interrupt).

    Interrupts can make this window arbitary long.

    -Andi


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


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