From: Heiko Carstens <hca@linux.ibm.com>
To: Heiko Carstens <hca@linux.ibm.com>
Cc: David Laight <david.laight.linux@gmail.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Juergen Christ <jchrist@linux.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
Yang Shi <yang@os.amperecomputing.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: Re: [PATCH v3 1/9] s390/alternatives: Add new ALT_TYPE_PERCPU type
Date: Wed, 20 May 2026 16:16:36 +0200 [thread overview]
Message-ID: <20260520141636.96889H12-hca@linux.ibm.com> (raw)
In-Reply-To: <20260520135045.96889G76-hca@linux.ibm.com>
On Wed, May 20, 2026 at 03:50:45PM +0200, Heiko Carstens wrote:
> On Wed, May 20, 2026 at 01:43:17PM +0100, David Laight wrote:
> > On Wed, 20 May 2026 11:22:35 +0200
> > Heiko Carstens <hca@linux.ibm.com> wrote:
> > I'm sure it is possible get the preprocessor to extract the register number
> > for you.
> > The exception table logic almost certainly already does it.
> > (The x86 version certainly does - and that is far less trivial.)
>
> That's true, the s390 extable logic is doing the same. However I failed to
> feed the extracted register number as constant into the same inline assembly
> it was extracted from.
Thinking about this again, I guess it should indeed be possible, and
my initial approach was wrong. Let me try again.
next prev parent reply other threads:[~2026-05-20 14:16 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-20 9:22 [PATCH v3 0/9] s390: Improve this_cpu operations Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 1/9] s390/alternatives: Add new ALT_TYPE_PERCPU type Heiko Carstens
2026-05-20 12:43 ` David Laight
2026-05-20 13:50 ` Heiko Carstens
2026-05-20 14:16 ` Heiko Carstens [this message]
2026-05-20 9:22 ` [PATCH v3 2/9] s390/percpu: Infrastructure for more efficient this_cpu operations Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 3/9] s390/percpu: Add missing do { } while (0) constructs Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 4/9] s390/percpu: Use new percpu code section for arch_this_cpu_add() Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 5/9] s390/percpu: Use new percpu code section for arch_this_cpu_add_return() Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 6/9] s390/percpu: Use new percpu code section for arch_this_cpu_[and|or]() Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 7/9] s390/percpu: Provide arch_this_cpu_read() implementation Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 8/9] s390/percpu: Provide arch_this_cpu_write() implementation Heiko Carstens
2026-05-20 9:22 ` [PATCH v3 9/9] s390/percpu: Remove one and two byte this_cpu operation implementation Heiko Carstens
2026-05-20 18:42 ` [PATCH v3 0/9] s390: Improve this_cpu operations Yang Shi
2026-05-20 22:34 ` David Laight
2026-05-21 0:23 ` Yang Shi
2026-05-21 10:17 ` David Laight
2026-05-21 16:57 ` Yang Shi
2026-05-21 17:55 ` David Laight
2026-05-21 20:46 ` Yang Shi
2026-05-21 22:13 ` David Laight
2026-05-21 23:41 ` Yang Shi
2026-05-21 10:23 ` David Laight
2026-05-21 17:48 ` Yang Shi
2026-05-21 10:37 ` Heiko Carstens
2026-05-21 17:47 ` Yang Shi
2026-05-22 9:18 ` Heiko Carstens
2026-05-27 19:09 ` Christoph Lameter (Ampere)
2026-05-27 20:38 ` Yang Shi
2026-05-28 8:36 ` David Laight
2026-05-27 23:44 ` Yang Shi
2026-05-28 9:03 ` David Laight
2026-05-28 19:19 ` Yang Shi
2026-05-28 20:34 ` David Laight
2026-05-28 14:14 ` Heiko Carstens
2026-05-28 17:14 ` David Laight
2026-05-28 18:39 ` Yang Shi
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