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Eric W. Biederman wrote: > With the x86-64 optimized vsyscall the syscall number does > not need to be placed into a register, because you have used > the proper entry point. For any syscall worth tuning in > user space I suspect that level of optimization would be > beneficial. A fast call path that does not waste a register. The cost of loading a constant into a register is _much_ lower than the cost of indirect jumps which we have been discussing. -- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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