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Fri, 19 Jun 2026 15:51:55 +0000 (GMT) Received: from p-imbrenda.ibmuc.com (unknown [9.111.54.29]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 19 Jun 2026 15:51:54 +0000 (GMT) From: Claudio Imbrenda To: linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, david@kernel.org, seiden@linux.ibm.com, nrb@linux.ibm.com, schlameuss@linux.ibm.com, gra@linux.ibm.com, hca@linux.ibm.com, gerald.schaefer@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, svens@linux.ibm.com Subject: [PATCH v4 0/7] KVM: s390: A bunch of gmap-related fixes Date: Fri, 19 Jun 2026 17:51:47 +0200 Message-ID: <20260619155154.307572-1-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.54.0 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-Spam-Details-Enc: AW1haW4tMjYwNjE5MDE1MCBTYWx0ZWRfX9sbH8Dx3bfe1 poU6V6gTSqcwJI86G861xMkcFEIkXnodWWtcFQOCrjkyAnP3fToeYYeCIi8+U+ZbEq8Sbm28vO9 g0P6Zr6L7sg6Oh6Y4yfoQb4Zq47zJtS7TnSE1w5laWJ7Bo+2pigkJ7iLAhjQ0Lfs6bziiO5obrl vCPJSAyepAzOzUg+Q5uMX0bYebAjzUuOuWIe0d2OnpfxI84pC4xJCqM6fGfn/syVXiS4YG2BSDC hJbZNOa1eqTi48vG3AddixfFTltibNixBHSdfLeZA+ePdV/Bd9HqoGoJXTI00LaCmWwe9z4Jqgm B54TlRMKR5qdQrqiz3frOUnIwdD6H8Cixl2VV68YHx4g/Spgt//lZJ3bWjiB2uf6joRVI+UbZbE a9qpzeW10wStF7wtJqUIXmnkqP51k25/SciMboCPE0tp/HhU9Qntv9/0bczyDxMhrVNnZ9FN4e4 CxGWkLxE8xq1GMfdLgQ== X-Proofpoint-GUID: yB3vtfgZzSkAAQgDR-gxwuItJ7QQtT2B X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE5MDE1MCBTYWx0ZWRfX821qqmvbvM89 eDoMYD9MTXX5sJuPHdmDriKq1pTxYYSOIdACVe6ZPdXflM+nQNLFM+6ze9SZqpyYtmpmCrdCqcP caczBYvFzwzu0VzTONImemLPaFIqAgU= X-Proofpoint-ORIG-GUID: yB3vtfgZzSkAAQgDR-gxwuItJ7QQtT2B X-Authority-Analysis: v=2.4 cv=auGCzyZV c=1 sm=1 tr=0 ts=6a3565a0 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=ucjmMn6u_Xy7mvBSwZ0A:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-19_03,2026-06-18_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606190150 Fix handling of _PAGE_UNUSED pte bit. The bit was lingering around longer than it should have, causing issues. This is yet a different approach from the previous version. Fix some cmma dirty tracking functions. Also fix a few other small issues in gmap. v3->v4: * Improve/fix descriptions of patches 1 and 3 * Fix handle_{sske,pfmf} under memory pressure * Fix cmma dirty tracking and its selftest v2->v3: * Fix _PAGE_UNUSED in yet a different way * Fix a potential overflow in dat_peek_cmma() * Some minor gmap fixes that are not actual bugs yet v1->v2: * Completely different approach, entirely new patch Claudio Imbrenda (7): s390/mm: Fix handling of _PAGE_UNUSED pte bit KVM: s390: Fix dat_peek_cmma() overflow KVM: s390: Do not set special large pages dirty KVM: s390: Fix code typo in gmap_protect_asce_top_level() KVM: s390: Fix handle_{sske,pfmf} under memory pressure KVM: s390: cmma: Fix cmma dirty tracking KVM: s390: selftests: Fix cmma selftest arch/s390/include/asm/pgtable.h | 4 ++-- arch/s390/kvm/dat.c | 5 ++++- arch/s390/kvm/gmap.c | 18 ++++++++++++++---- arch/s390/kvm/kvm-s390.c | 5 +---- arch/s390/kvm/priv.c | 8 ++++++-- arch/s390/mm/gmap_helpers.c | 3 ++- tools/testing/selftests/kvm/s390/cmma_test.c | 3 +++ 7 files changed, 32 insertions(+), 14 deletions(-) -- 2.54.0