linux-kernel - Re: [patch V6 09/11] rseq: Implement rseq_grant_slice

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Message-ID: <87bjjvbc99.ffs@tglx>
Date: Fri, 19 Dec 2025 00:28:50 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, LKML
 <linux-kernel@...r.kernel.org>
Cc: "Paul E. McKenney" <paulmck@...nel.org>, Boqun Feng
 <boqun.feng@...il.com>, Jonathan Corbet <corbet@....net>, Prakash Sangappa
 <prakash.sangappa@...cle.com>, Madadi Vineeth Reddy
 <vineethr@...ux.ibm.com>, K Prateek Nayak <kprateek.nayak@....com>, Steven
 Rostedt <rostedt@...dmis.org>, Sebastian Andrzej Siewior
 <bigeasy@...utronix.de>, Arnd Bergmann <arnd@...db.de>,
 linux-arch@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>, Peter
 Zijlstra <peterz@...radead.org>, Ron Geva <rongevarg@...il.com>, Waiman
 Long <longman@...hat.com>
Subject: Re: [patch V6 09/11] rseq: Implement rseq_grant_slice_extension()

On Tue, Dec 16 2025 at 10:25, Mathieu Desnoyers wrote:
> On 2025-12-15 13:24, Thomas Gleixner wrote:
> [...]
>> In case that the user space access faults or invalid state is detected, the
>> task is terminated with SIGSEGV.
>
> It appears that only access faults trigger SIGSEGV. Perhaps removing
> "or invalid state is detected" should be removed, or the code is missing
> some state validation ?

Seems I dropped a debug path somewhere down the road.