Messages in this thread | | | Date | Mon, 26 Mar 2007 11:32:09 +1000 | From | Paul Mackerras <> | Subject | Re: [PATCH] move die notifier handling to common code |
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Christoph Hellwig writes:
> This patch moves the die notifier handling to common code. Previous > various architectures had exactly the same code for it. Note that > the new code is compiled unconditionally, this should be understood > as an appel to the other architecture maintainer to implement > support for it aswell (aka sprinkling a notify_die or two in the > proper place)
Seems OK, although I think kprobes should not be using notify_die. The set of events that kprobes is interested in has no intersection at all with the set that any other consumer of the notify_die events is interested in, on any architecture.
Furthermore, the multiplexing of the kprobes events through notify_die really serves no useful purpose. It just means that kprobe_exceptions_notify has to demultiplex the events with a switch statement. There is no significant common code for all events in kprobe_exceptions_notify, just a simple check whether the event happened in user mode.
However, all that is in arch code so can be changed per-arch if desired.
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