Re: [Xen-devel] [PATCH v6 2/4] xen: don't process rcu callbacks when holding a rcu_read_lock()

[Jan Beulich <jbeulich@xxxxxxxx>]

On 13.03.2020 14:06, Juergen Gross wrote:
> Some keyhandlers are calling process_pending_softirqs() while holding
> a rcu_read_lock(). This is wrong, as process_pending_softirqs() might
> activate rcu calls which should not happen inside a rcu_read_lock().
> 
> For that purpose modify process_pending_softirqs() to not allow rcu
> callback processing when a rcu_read_lock() is being held.
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

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