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

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Message-ID: <87bjj0ih4i.ffs@tglx>
Date: Sun, 11 Jan 2026 11:22:05 +0100
From: Thomas Gleixner <tglx@...nel.org>
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 Fri, Dec 19 2025 at 00:28, Thomas Gleixner wrote:
> 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.

On purpose, so I reword the change log.