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Re: [Xen-devel] Linux'es SLUB incompatible with Xen?

On Thu, Sep 25, 2014 at 11:47:23AM +0100, David Vrabel wrote:
> On 25/09/14 09:23, Jan Beulich wrote:
> > Linux-Xen maintainers,
> > 
> > are you aware that SLUB's use of percpu_cmpxchg16b_double() is
> > currently incompatible with Xen when run on old, not cmpxchg16b
> > capable x86-64 CPUs (the problem being this_cpu_cmpxchg16b_emu's
> > non-paravirtualized use of CLI)? Or is that a simple "we don't care -
> > don't run Xen on such old systems" (despite everything else, including
> > the hypervisor, working fine there)?
> I wasn't aware but I don't care about such old hardware so I'm not going
> to fix it.
> If you think this should be fixed, please work with the x86 maintainers
> to get this fixed.


You are such a comedian :-)
> David

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