Messages in this thread | | | Subject | Re: [PATCH 1/5] arm64: entry: isb in el1_irq | From | James Morse <> | Date | Fri, 6 Apr 2018 18:30:50 +0100 |
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Hi Mark,
On 06/04/18 18:22, Mark Rutland wrote: > Digging a bit, I also thing that our ct_user_exit and ct_user_enter > usage is on dodgy ground today.
[...]
> I think similar applies to SDEI; we don't negotiate with RCU prior to > invoking handlers, which might need RCU.
The arch code's __sdei_handler() calls nmi_enter() -> rcu_nmi_enter(), which does a rcu_dynticks_eqs_exit().
Thanks,
James
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