On 03.11.21 00:36, Boris Ostrovsky wrote:
> Commit 66558b730f25 ("sched: Add cluster scheduler level for x86")
> introduced cpu_l2c_shared_map mask which is expected to be initialized
> by smp_op.smp_prepare_cpus(). That commit only updated
> native_smp_prepare_cpus() version but not xen_pv_smp_prepare_cpus().
> As result Xen PV guests crash in set_cpu_sibling_map().
> 
> While the new mask can be allocated in xen_pv_smp_prepare_cpus() one can
> see that both versions of smp_prepare_cpus ops share a number of common
> operations that can be factored out. So do that instead.
> 
> Fixes: 66558b730f25 ("sched: Add cluster scheduler level for x86")
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

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


Juergen