Messages in this thread | | | Date | Sat, 29 Jun 2019 17:12:36 +0200 | From | Andrea Parri <> | Subject | Re: [RFC] Deadlock via recursive wakeup via RCU with threadirqs |
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Hi Steve,
> As Paul stated, interrupts are synchronization points. Archs can only > play games with ordering when dealing with entities outside the CPU > (devices and other CPUs). But if you have assembly that has two stores, > and an interrupt comes in, the arch must guarantee that the stores are > done in that order as the interrupt sees it.
Hopefully I'm not derailing the conversation too much with my questions ... but I was wondering if we had any documentation (or inline comments) elaborating on this "interrupts are synchronization points"?
Thanks, Andrea
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