On Tue, May 15, 2018 at 05:13:56PM +0800, Peter Xu wrote: > I stole the printk_once() macro. > > I always wanted to be able to print some error directly if there is a > buffer to dump, however we can't use error_report() really quite often > when there can be any DDOS attack. To avoid that, we can introduce a > print-once function for it.
I like the idea. It solves the problem of guest-triggerable error messages that we should know about for troubleshooting but can't due to DoS. Stefan
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