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    SubjectRe: [patch 134/149] x86, paravirt: Add a global synchronization point for pvclock
    On Tue, 13 Jul 2010, Avi Kivity wrote:

    > Well, current upstream uses "m":
    >
    >> case 8: \
    >> asm volatile(lock "cmpxchgq %1,%2" \
    >> : "=a"(__ret) \
    >> : "r"(__new), "m"(*__xg(ptr)), "0"(__old) \
    >> : "memory"); \
    >> break; \
    >
    > and works; I also failed to reproduce with 2.6.32.16. So I expect some
    > toolchain involvement.
    >
    > Peter, what gcc are you using?

    gcc (Debian 4.3.2-1.1) 4.3.2

    --
    | .''`. ** Debian GNU/Linux **
    Peter Palfrader | : :' : The universal
    http://www.palfrader.org/ | `. `' Operating System
    | `- http://www.debian.org/


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