Re: [PATCH v3 23/26] kbuild/objtool: Add objtool-vmlinux.o pass

[Peter Zijlstra]

On Tue, Mar 24, 2020 at 05:03:21PM -0500, Josh Poimboeuf wrote:

> > +config VMLINUX_VALIDATION
> > +	bool
> > +	depends on STACK_VALIDATION && DEBUG_ENTRY && !PARAVIRT
> > +	default y
> > +
> 
> So I'm assuming this is incompatible with PARAVIRT because of all the
> indirect pvops calls?

Yep.

> I'm thinking it should be easy to detect those and whitelist them
> because they always have a pv_ops relocation associated with the call
> instruction.

I did consider that, but have been too lazy to actually make that work.
Also, the series is large enough as it is.. :-)