Re: [PATCH v3 04/12] Add "handle page fault" PV helper.

From: Andi Kleen
Date: Mon Jan 18 2010 - 04:53:32 EST

Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:
> Whatever are we doing to end up in do_page_fault() as it stands? Surely
> we can tell the CPU to go elsewhere to handle faults?
> Isn't that as simple as calling set_intr_gate(14, my_page_fault)
> somewhere on the cpuinit instead of the regular page_fault handler?

That typically requires ugly ifdefs in entry*S and could be described
as code obfuscation ("come from")

As long as he avoids a global reference (patch) the if should be practially
free anyways.

ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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