Messages in this thread |  | | | Date | Tue, 23 Nov 2010 21:11:26 -0600 (CST) | | From | Christoph Lameter <> | | Subject | Re: [thiscpuops upgrade 09/10] x86: this_cpu_cmpxchg and this_cpu_cmpxchg_double operations |
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On Wed, 24 Nov 2010, Eric Dumazet wrote:
> I thought some x86_64 cpus dont have cmpxchg16b ?
Right I vaguely remember a flag there.
> You have to check cx16 feature flag or implement a fallback ?
There is already a compile time fallback. Uhh.. How do I do this at runtime?
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