On 08/12/17 12:17, Jan Beulich wrote:
> Unconditionally reporting a value seen on the P4 or older invokes
> functionality like io_apic_get_unique_id() on 32-bit builds, resulting
> in a panic() with sufficiently many CPUs and/or IO-APICs. Doing what
> that function does would be the hypervisor's responsibility anyway, so
> makes no sense to be used when running on Xen. Uniformly report a more
> modern version; this shouldn't matter much as both LAPIC and IO-APIC are
> being managed entirely / mostly by the hypervisor.
> 
> Signed-off-by: Jan Beulich <jbeul...@suse.com>

Reviewed-by: Juergen Gross <jgr...@suse.com>

BTW: Cc: stable?


Juergen

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