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    SubjectRe: powerpc: fix double syscall restarts
    On Mon, Sep 20, 2010 at 09:48:57PM +0100, Al Viro wrote:

    > Make sigreturn zero regs->trap, make do_signal() do the same on all
    > paths. As it is, signal interrupting e.g. read() from fd 512 (==
    > ERESTARTSYS) with another signal getting unblocked when the first
    > handler finishes will lead to restart one insn earlier than it ought
    > to. Same for multiple signals with in-kernel handlers interrupting
    > that sucker at the same time. Same for multiple signals of any kind
    > interrupting that sucker on 64bit...
    >
    > Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

    Acked-by: Paul Mackerras <paulus@samba.org>


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