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Sat, 16 Nov 2024 19:24:21 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B3DA62004D; Sat, 16 Nov 2024 19:24:21 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8CB782004B; Sat, 16 Nov 2024 19:24:19 +0000 (GMT) Received: from li-7bb28a4c-2dab-11b2-a85c-887b5c60d769.ibm.com.com (unknown [9.124.220.93]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Sat, 16 Nov 2024 19:24:19 +0000 (GMT) From: Shrikanth Hegde To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org Cc: sshegde@linux.ibm.com, npiggin@gmail.com, christophe.leroy@csgroup.eu, maddy@linux.ibm.com, bigeasy@linutronix.de, ankur.a.arora@oracle.com, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/2] powerpc: Enable lazy preemption Date: Sun, 17 Nov 2024 00:53:04 +0530 Message-ID: <20241116192306.88217-1-sshegde@linux.ibm.com> X-Mailer: git-send-email 2.43.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: hyeRfXY9rOGUTA5HTY3yFtEZdbbKeB6q X-Proofpoint-ORIG-GUID: XrQIH_H1HhIVinAJbhnWr0I8ujvSlgEd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 mlxscore=0 malwarescore=0 mlxlogscore=531 adultscore=0 priorityscore=1501 bulkscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411160165 preempt=lazy has been merged into tip[1]. Lets Enable it for PowerPC. This has been very lightly tested and as michael suggested could go through a test cycle. If needed, patches can be merged. I have kept it separate for easier bisect. Lazy preemption support for kvm on powerpc is still to be done. Refs: [1]: https://lore.kernel.org/lkml/20241007074609.447006177@infradead.org/ v1: https://lore.kernel.org/all/20241108101853.277808-1-sshegde@linux.ibm.com/ Changes since v1: - Change for vmx copy as suggested by Sebastian. - Add rwb tags Shrikanth Hegde (2): powerpc: Add preempt lazy support powerpc: Large user copy aware of full:rt:lazy preemption arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/thread_info.h | 9 ++++++--- arch/powerpc/kernel/interrupt.c | 4 ++-- arch/powerpc/lib/vmx-helper.c | 2 +- 4 files changed, 10 insertions(+), 6 deletions(-) -- 2.43.5