RE: [PATCH v5] panic: add panic_force_cpu= parameter to redirect panic to a specific CPU

Pnina Feder
2026-01-11T10:05:40Z

Hi Steve,

Thanks for the guidance, will do.

Pnina

> On Thu, 8 Jan 2026 22:36:12 +0200
> Pnina Feder <pnina.feder@mobileye.com> wrote:
>
> First, new versions of a patch or patch set should *always* be a new thread and not a reply to the old version. That makes it much harder on maintainers to see a new series.
>
> > If the specified CPU is invalid, offline, or a panic is already in
> > progress on another CPU, the redirection is skipped and panic
> > continues on the current CPU.
> >
> > Changes since v4:
> > - Make IPI delivery an overridable weak function (panic_smp_redirect_cpu)
> > so architectures can use NMI where available
> > - Add declaration on include/linux/smp.h alongside other panic SMP
> > functions
> > - Add warning to documentation about reduced reliability
> > - Address review comments from Andrew Morton (remove unnecessary cast,
> > add missing kernel-doc parameters)
> >
> > Signed-off-by: Pnina Feder <pnina.feder@mobileye.com>
> > ---
>
> The "Changes since" line should always be below the '---' otherwise it gets pulled into the git log and the maintainer needs to manually delete it (which is annoying).
>
> Also, it is helpful to add a link to the previous version.
>
> > Signed-off-by: Pnina Feder <pnina.feder@mobileye.com>
> > ---
> Changes since v4: Suspicious Link - Removed
> - Make IPI delivery an overridable weak function (panic_smp_redirect_cpu)
> so architectures can use NMI where available
> - Add declaration on include/linux/smp.h alongside other panic SMP functions
> - Add warning to documentation about reduced reliability
> - Address review comments from Andrew Morton (remove unnecessary cast,
> add missing kernel-doc parameters)
>
> This provides the continuity between versions without having to be replies of older versions.
>
> -- Steve