linux-kernel - Re: [PATCH 0/2] x86/xen: don't return from xen_pv_play

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Message-ID: <Y8UVDAgXh/y+B66k@hirez.programming.kicks-ass.net>
Date:   Mon, 16 Jan 2023 10:12:44 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Juergen Gross <jgross@...e.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>, xen-devel@...ts.xenproject.org,
        Josh Poimboeuf <jpoimboe@...nel.org>
Subject: Re: [PATCH 0/2] x86/xen: don't return from xen_pv_play_dead()

On Fri, Nov 25, 2022 at 07:32:46AM +0100, Juergen Gross wrote:
> All play_dead() functions but xen_pv_play_dead() don't return to the
> caller.
> 
> Adapt xen_pv_play_dead() to behave like the other play_dead() variants.
> 
> Juergen Gross (2):
>   x86/xen: don't let xen_pv_play_dead() return
>   x86/xen: mark xen_pv_play_dead() as __noreturn
> 
>  arch/x86/xen/smp.h      |  2 ++
>  arch/x86/xen/smp_pv.c   | 17 ++++-------------
>  arch/x86/xen/xen-head.S |  7 +++++++
>  tools/objtool/check.c   |  1 +
>  4 files changed, 14 insertions(+), 13 deletions(-)

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>