From: Heiko Carstens <hca@linux.ibm.com>
To: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>,
David Hildenbrand <david@redhat.com>,
kvm@vger.kernel.org, linux-s390@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] KVM: s390: interrupt: use READ_ONCE() before cmpxchg()
Date: Wed, 11 Jan 2023 13:11:27 +0100 [thread overview]
Message-ID: <Y76nb+2tTERSszfP@osiris> (raw)
In-Reply-To: <f4203dea-93a9-6903-d635-c36ff47337c9@linux.ibm.com>
On Tue, Jan 10, 2023 at 08:15:50PM +0100, Christian Borntraeger wrote:
> Am 09.01.23 um 15:54 schrieb Heiko Carstens:
> > Use READ_ONCE() before cmpxchg() to prevent that the compiler generates
> > code that fetches the to be compared old value several times from memory.
> >
> > Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
>
> Looks sane.
>
> Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
>
> In case you want to take it via the s390 tree:
> Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Given that there don't seem to be any pending s390 specific patches I
take it via the s390 tree.
Applied.
prev parent reply other threads:[~2023-01-11 12:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 14:54 [PATCH v2] KVM: s390: interrupt: use READ_ONCE() before cmpxchg() Heiko Carstens
2023-01-09 16:03 ` Claudio Imbrenda
2023-01-10 19:15 ` Christian Borntraeger
2023-01-11 12:11 ` Heiko Carstens [this message]
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