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    SubjectRe: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable
    Andi Kleen wrote:
    > You could use the dwarf2 unwind tables. They have exact information
    > what register has what. But it would likely get complicated.

    Yes. And would they be accurate for hand-written asm, which is where we
    have this problem?

    J
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