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SubjectRe: linux-next: build warning after merge of the tip tree
Hi all,

On Fri, 17 Sep 2021 10:23:48 +0200 Peter Zijlstra <> wrote:
> On Fri, Sep 17, 2021 at 11:58:59AM +1000, Stephen Rothwell wrote:
> >
> > After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
> > produced this warning:
> >
> > vmlinux.o: warning: objtool: mce_setup()+0x22: call to memset() leaves .noinstr.text section
> > vmlinux.o: warning: objtool: do_machine_check()+0x51: call to mce_gather_info() leaves .noinstr.text section
> Those are pre-existing and Boris is lokoing into them

I am still seeing the above 2 warnings and also now:

vmlinux.o: warning: objtool: xen_get_debugreg()+0xb: call to HYPERVISOR_get_debugreg() leaves .noinstr.text section
vmlinux.o: warning: objtool: xen_set_debugreg()+0x15: call to HYPERVISOR_set_debugreg.isra.0() leaves .noinstr.text section

Presumably caused by

f4afb713e5c3 ("x86/xen: Make get_debugreg() noinstr")
7361fac0465b ("x86/xen: Make set_debugreg() noinstr")

Stephen Rothwell
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