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Wed, 26 Feb 2025 12:37:30 +0000 (GMT) From: Claudio Imbrenda To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, frankja@linux.ibm.com, borntraeger@de.ibm.com, david@redhat.com, nrb@linux.ibm.com, seiden@linux.ibm.com, nsg@linux.ibm.com, schlameuss@linux.ibm.com, hca@linux.ibm.com Subject: [PATCH v2 0/1] KVM: s390: fix a newly introduced bug Date: Wed, 26 Feb 2025 13:37:24 +0100 Message-ID: <20250226123725.247578-1-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: vPjSk5_Hxs50e_ZvfDSEHbRgreR-yc7V X-Proofpoint-GUID: vPjSk5_Hxs50e_ZvfDSEHbRgreR-yc7V X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-26_02,2025-02-26_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 mlxlogscore=505 spamscore=0 mlxscore=0 malwarescore=0 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502100000 definitions=main-2502260100 Fix race when making a page secure (hold pte lock again) This should fix the issues I have seen, which I think/hope are also the same issues that David found. v1->v2: * major refactoring * walk the page tables only once * when importing, manually fault in pages if needed Claudio Imbrenda (1): KVM: s390: pv: fix race when making a page secure arch/s390/include/asm/uv.h | 2 +- arch/s390/kernel/uv.c | 105 ++++++++++++++++++++++++++++++++++--- arch/s390/kvm/gmap.c | 99 +++------------------------------- arch/s390/kvm/kvm-s390.c | 25 +++++---- 4 files changed, 121 insertions(+), 110 deletions(-) -- 2.48.1