From: sashiko-bot@kernel.org
To: "Heiko Carstens" <hca@linux.ibm.com>
Cc: "Alexander Gordeev" <agordeev@linux.ibm.com>,
linux-s390@vger.kernel.org, "Vasily Gorbik" <gor@linux.ibm.com>,
"Christian Borntraeger" <borntraeger@linux.ibm.vom>
Subject: Re: [PATCH 9/9] s390/percpu: Remove one and two byte this_cpu operation implementation
Date: Thu, 13 Aug 2026 22:01:40 +0000 [thread overview]
Message-ID: <20260813220140.A12091F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260317195436.2276810-10-hca@linux.ibm.com>
> There are no one and two byte this_cpu operations within the kernel
> (defconfig). However even if there would be the s390 implementation, which
> uses a cmpxchg loop, generates a very large code sequence due to the lack
> of native one and two byte cmpxchg instructions.
>
> Remove the s390 implementation and use the generic implementation.
>
> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260317195436.2276810-1-hca@linux.ibm.com?part=9
next prev parent reply other threads:[~2026-08-13 22:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-17 19:54 [PATCH 0/9] s390: Improve this_cpu operations Heiko Carstens
2026-03-17 19:54 ` [PATCH 1/9] s390/percpu: Provide arch_raw_cpu_ptr() Heiko Carstens
2026-03-17 19:54 ` [PATCH 2/9] s390/alternatives: Add new ALT_TYPE_PERCPU type Heiko Carstens
2026-03-17 19:54 ` [PATCH 3/9] s390/percpu: Infrastructure for more efficient this_cpu operations Heiko Carstens
2026-03-17 19:54 ` [PATCH 4/9] s390/percpu: Use new percpu code section for arch_this_cpu_add() Heiko Carstens
2026-03-17 19:54 ` [PATCH 5/9] s390/percpu: Use new percpu code section for arch_this_cpu_add_return() Heiko Carstens
2026-03-17 19:54 ` [PATCH 6/9] s390/percpu: Use new percpu code section for arch_this_cpu_[and|or]() Heiko Carstens
2026-03-17 19:54 ` [PATCH 7/9] s390/percpu: Provide arch_this_cpu_read() implementation Heiko Carstens
2026-03-17 19:54 ` [PATCH 8/9] s390/percpu: Provide arch_this_cpu_write() implementation Heiko Carstens
2026-08-13 21:53 ` sashiko-bot
2026-03-17 19:54 ` [PATCH 9/9] s390/percpu: Remove one and two byte this_cpu operation implementation Heiko Carstens
2026-08-13 22:01 ` sashiko-bot [this message]
2026-03-17 21:08 ` [PATCH 0/9] s390: Improve this_cpu operations Peter Zijlstra
2026-03-23 10:26 ` Juergen Christ
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