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From: Thomas Gleixner <tglx@linutronix.de>
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To: Sean Christopherson <seanjc@google.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Jens Axboe <axboe@kernel.dk>,
 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, Peter Zijlstra
 <peterz@infradead.org>, "Paul E. McKenney" <paulmck@kernel.org>, Boqun
 Feng <boqun.feng@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Wei Liu
 <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>, x86@kernel.org,
 Arnd Bergmann <arnd@arndb.de>, Heiko Carstens <hca@linux.ibm.com>,
 Christian Borntraeger <borntraeger@linux.ibm.com>, Sven Schnelle
 <svens@linux.ibm.com>, Huacai Chen <chenhuacai@kernel.org>, Paul Walmsley
 <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>
Subject: Re: [patch V2 36/37] rseq: Switch to TIF_RSEQ if supported
In-Reply-To: <aLllFObsXWOtaVVI@google.com>
References: <20250823161326.635281786@linutronix.de>
 <20250823161655.586695263@linutronix.de> <aKzBQRKuEmrNtCiB@google.com>
 <877byh2k13.ffs@tglx> <aLllFObsXWOtaVVI@google.com>
Date: Thu, 04 Sep 2025 14:26:18 +0200
Message-ID: <87ikhyxv2t.ffs@tglx>
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On Thu, Sep 04 2025 at 03:08, Sean Christopherson wrote:
> On Tue, Sep 02, 2025, Thomas Gleixner wrote:
>> I'm happy to add a comment which explains that.
>
> And maybe a BUILD_BUG_ON() to assert that TIF_RSEQ != TIF_NOTIFY_RESUME?  My main
> interest is documenting why the generic implementation doesn't need to re-raise
> TIF_NOTIFY_RESUME.  E.g. something like this?

Done.