On Thu, Apr 12, 2018 at 12:27 PM, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> wrote: > The cpu_opv system call executes a vector of operations on behalf of > user-space on a specific CPU with preemption disabled. It is inspired > by readv() and writev() system calls which take a "struct iovec" > array as argument. Do we really want the page pinning? This whole cpu_opv thing is the most questionable part of the series, and the page pinning is the most questionable part of cpu_opv for me. Can we plan on merging just the plain rseq parts *without* this all first, and then see the cpu_opv thing as a "maybe future expansion" part. I think that would make Andy happier too. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html