Re: [PATCH 02/29] x86/module: Fix the paravirt vs alternative order

From: Peter Zijlstra
Date: Fri Feb 18 2022 - 16:23:01 EST


On Fri, Feb 18, 2022 at 12:28:20PM -0800, Josh Poimboeuf wrote:
> On Fri, Feb 18, 2022 at 05:49:04PM +0100, Peter Zijlstra wrote:
> > Ever since commit 4e6292114c741 ("x86/paravirt: Add new features for
> > paravirt patching") there is an ordering dependency between patching
> > paravirt ops and patching alternatives, the module loader still
> > violates this.
> >
> > Fixes: 4e6292114c741 ("x86/paravirt: Add new features for paravirt patching")
> > Cc: Juergen Gross <jgross@xxxxxxxx>
> > Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
>
> Probably a good idea to put the 'para' and 'alt' clauses next to each
> other and add a comment that the ordering is necessary.

Can't, retpolines must be in between, but I'll add a comment to check
alternative.c for ordering constraints.