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

[David Vrabel <david.vrabel@xxxxxxxxxx>]

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.

David

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