Re: [PATCH v5 00/12] x86: major paravirt cleanup

Peter Zijlstra
2021-03-08T16:33:51Z

On Mon, Mar 08, 2021 at 01:28:32PM +0100, Juergen Gross wrote:
> This is a major cleanup of the paravirt infrastructure aiming at
> eliminating all custom code patching via paravirt patching.
>
> This is achieved by using ALTERNATIVE instead, leading to the ability
> to give objtool access to the patched in instructions.
>
> In order to remove most of the 32-bit special handling from pvops the
> time related operations are switched to use static_call() instead.
>
> At the end of this series all paravirt patching has to do is to
> replace indirect calls with direct ones. In a further step this could
> be switched to static_call(), too.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

I've rebased my objtool/retpoline branch on top of this, will post
if/when this hits tip. Negative alternative works like a charm.