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Thu, 11 Sep 2025 14:34:02 +0000 (GMT) Date: Thu, 11 Sep 2025 16:33:54 +0200 From: Alexander Gordeev To: Linus Torvalds Cc: Vasily Gorbik , Heiko Carstens , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [GIT PULL] s390 fixes for 6.17-rc6 Message-ID: <20250911143354.233232A3c-agordeev@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: jYfMomnR6n0sLf8_lMxWbcfWLblVKASG X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDIzNSBTYWx0ZWRfX+kwUY4RhJFr2 H8tfsYYDLfjjqCKiUeZE0ZgrRum26Tbf2aL8R0GPN4vhnh9iOADj07+jdMBb/kfaJkju6XqdcCW RvRoUkwcR3oE7//XuSvn4KJfrLi7jNoKUmhAiS9Xja8C6Aa2ogpEEgtWFMRoeneKMdJAAjFupIh DKpARjEZ63srv4srzUpW5SeaeabiJZUGdXxvr1XVEp9hHHuM/XEoYX9msX2p23QhB0mxoECmMp8 3JnUbEt8XE2zOotm+Rk4+Q6557P1oHy5hpK4gYEeTKx07JGpm8hd7tVGnEqKsWJj5PFaEdgNRJh LQMsrPtrlQAtYfhCjR6SDjCY/HtaOJhSlt3XCo5DNrHtVJqzy5qj/uieY/MimBCwHal/Cgi0jM5 oEQaEjd9 X-Proofpoint-GUID: jYfMomnR6n0sLf8_lMxWbcfWLblVKASG X-Authority-Analysis: v=2.4 cv=F59XdrhN c=1 sm=1 tr=0 ts=68c2ddde cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=kj9zAlcOel0A:10 a=yJojWOMRYYMA:10 a=VwQbUJbxAAAA:8 a=VtwnZtTE6dgXxh599V4A:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-11_01,2025-09-11_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060235 Hi Linus, please pull s390 fixes for 6.17-rc6. Thanks, Alexander The following changes since commit 3868f910440c47cd5d158776be4ba4e2186beda7: s390/hypfs: Enable limited access during lockdown (2025-08-21 17:46:14 +0200) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-6.17-4 for you to fetch changes up to ce971233242b5391d99442271f3ca096fb49818d: s390/cpum_cf: Deny all sampling events by counter PMU (2025-08-28 16:47:58 +0200) ---------------------------------------------------------------- s390 fixes for 6.17-rc6 - ptep_modify_prot_start() may be called in a loop, which might lead to the preempt_count overflow due to the unnecessary preemption disabling. Do not disable preemption to prevent the overflow - Events of type PERF_TYPE_HARDWARE are not tested for sampling and return -EOPNOTSUPP eventually. Instead, deny all sampling events by CPUMF counter facility and return -ENOENT to allow other PMUs to be tried - The PAI PMU driver returns -EINVAL if an event out of its range. That aborts a search for an alternative PMU driver. Instead, return -ENOENT to allow other PMUs to be tried ---------------------------------------------------------------- Gerald Schaefer (1): s390/mm: Prevent possible preempt_count overflow Thomas Richter (2): s390/pai: Deny all events not handled by this PMU s390/cpum_cf: Deny all sampling events by counter PMU arch/s390/kernel/perf_cpum_cf.c | 4 ++-- arch/s390/kernel/perf_pai_crypto.c | 4 ++-- arch/s390/kernel/perf_pai_ext.c | 2 +- arch/s390/mm/pgtable.c | 2 -- 4 files changed, 5 insertions(+), 7 deletions(-)