Re: Please revert 21564fd2a3deb48200b595332f9ed4c9f311f2a7

From: Jeremy Fitzhardinge
Date: Mon Jul 09 2007 - 10:07:29 EST


Alan Cox wrote:
There were a considerable number of sensible logical objections. You just
didn't agree with them. You've now effectively made .22 unsupportable
since we don't know if someone has binary virtualiser crap loaded.


The pv_ops infrastructure doesn't support modular pv_ops implementations, and if it did, there's certainly no intention of supporting non-GPL implementations.

At the same time that all the other altinstruction patching happens, it converts any indirect calls via paravirt_ops into direct calls to the target function, bypassing struct paravirt_ops altogether. After that the structure is pretty much only used for patching modules. Any attempt at writing a modular pv_ops implementation would fail as a result.

J
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