On Thu, Jan 29, 2026 at 04:21:56AM +0000, Michael Kelley wrote:
> From: Mukesh R <[email protected]> Sent: Tuesday, January 20, 2026 
> 6:41 PM
> > 
> > Fix two compiler warnings:
> >   o smp_ops is only defined if CONFIG_SMP
> >   o status is set but not explicitly used.
> > 
> > Reported-by: kernel test robot <[email protected]>
> > Closes: 
> > https://lore.kernel.org/oe-kbuild-all/[email protected]/
> > Signed-off-by: Mukesh R <[email protected]>
> > ---
> >  arch/x86/hyperv/hv_crash.c | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> > 
> > diff --git a/arch/x86/hyperv/hv_crash.c b/arch/x86/hyperv/hv_crash.c
> > index c0e22921ace1..82915b22ceae 100644
> > --- a/arch/x86/hyperv/hv_crash.c
> > +++ b/arch/x86/hyperv/hv_crash.c
> > @@ -279,7 +279,6 @@ static void hv_notify_prepare_hyp(void)
> >  static noinline __noclone void crash_nmi_callback(struct pt_regs *regs)
> >  {
> >     struct hv_input_disable_hyp_ex *input;
> > -   u64 status;
> >     int msecs = 1000, ccpu = smp_processor_id();
> > 
> >     if (ccpu == 0) {
> > @@ -313,7 +312,7 @@ static noinline __noclone void crash_nmi_callback(struct
> > pt_regs *regs)
> >     input->rip = trampoline_pa;
> >     input->arg = devirt_arg;
> > 
> > -   status = hv_do_hypercall(HVCALL_DISABLE_HYP_EX, input, NULL);
> > +   hv_do_hypercall(HVCALL_DISABLE_HYP_EX, input, NULL);
> > 
> >     hv_panic_timeout_reboot();
> >  }
> > @@ -628,8 +627,9 @@ void hv_root_crash_init(void)
> >     if (rc)
> >             goto err_out;
> > 
> > +#ifdef CONFIG_SMP
> >     smp_ops.crash_stop_other_cpus = hv_crash_stop_other_cpus;
> > -
> > +#endif
> >     crash_kexec_post_notifiers = true;
> >     hv_crash_enabled = true;
> >     pr_info("Hyper-V: both linux and hypervisor kdump support enabled\n");
> > --
> > 2.51.2.vfs.0.1
> > 
> 
> Ingo Molnar has separately fixed the smp_ops problem in [1]. Removing
> the unused "status" value looks good to me, though it's probably slightly
> better to add (void) to hv_do_hypercall() as an explicit acknowledgement
> that there's a return value that's not relevant and is being ignored; i.e.,
> 
>       (void)hv_do_hypercall(HVCALL_DISABLE_HYP_EX, input, NULL);
> 
> Regardless, for the unused "status" part of this patch,
> 
> Reviewed-by: Michael Kelley <[email protected]>
> 
> [1] 
> https://lore.kernel.org/all/176959812223.510.4055929851272785854.tip-bot2@tip-bot2/

It's my fault. I didn't get to this earlier.

I have applied the other fix to my tree.

Thanks,
Wei

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