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    SubjectRe: out-of-line x86 "put_user()" implementation
    On Tue, Feb 08, 2005 at 06:16:15PM -0800, Linus Torvalds wrote:
    > I'd happily use your version, but I thought that some versions of gcc
    > require that input output registers cannot overlap, and would refuse to do
    > that thing? But if you tell me differently..

    No, you're thinking of

    asm("" : "=a" (x) : : "eax")

    where the clobber overlaps the inputs or outputs.

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