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Tue, 20 Oct 2026 14:33:09 +0000 (GMT) Received: from b35lp69.lnxne.boe (unknown [9.87.84.240]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 20 Oct 2026 14:33:09 +0000 (GMT) From: Christian Borntraeger To: Janosch Frank , Claudio Imbrenda , Paolo Bonzini , Sean Christopherson Cc: KVM , Christian Borntraeger , linux-s390 , Shuah Khan Subject: [PATCH 0/2] Fix error handling for async_pf Date: Tue, 20 Oct 2026 16:33:06 +0200 Message-ID: <20261020143308.228328-1-borntraeger@linux.ibm.com> X-Mailer: git-send-email 2.53.0 X-Mailing-List: kvm@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIwMDA1NiBTYWx0ZWRfX49+O20XXsoes Ha88zpZw/Yt+Pacaf4DbELnh0xIxqgZcZBPRplqmAh/ySkLrnVUVkOakUpSWakQWQiqIVm33ngJ 0OyOZHqZyRqos2hHEHw4vq0IxrT6bxYlevGfZPCwtoXiGJZ5tkGyEfWNIt839YUvmkNndhN63Uf UyPWFqbX88jTKDWMUyKk2CtIsjyVvxFL5wnEhQONtiFOwtwExEV0XI1JXtcLPfS6sutrHmoocp7 OVl2VtvH3imJuSrKiA22jomBsCS7yzsFNcumMFxvXTCZvV8eqRndr2zOylJd7YPhc6/fNC8NVYB ndN/w1HmFAs8xlZHKbp/pXh85hq0mK4Vd9qKts78a9yeJYQZ2nwcolfqVanGY0ffEsk6iWQrp7+ XvMhmiao+M/dbmOZO85qAxJbWzWXoMfc0KAK9vhNTIVPDq/3w/+7rpYAg0lZAsSCa1AOGPsWCsm R+8PCiOyQis6L4Me1Cw== X-Proofpoint-ORIG-GUID: v3Jrxt96XinBouBF8IuU79e12LA19tu7 X-Proofpoint-GUID: Se969sSIiqEvh2hdyKlSX70gZ1Bo-rvo X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIwMDA1NiBTYWx0ZWRfX03+AnSU1Fuw/ 3b/bpXyr3wrrx/44djdiTb3UI0Mxf9FgVddlqkNjr/fXJxxPGrtWRJbZZmXNXJMVhBMkoJCJDNI 1IGyCu7LvWMN4dV+xqg3ZlV1NJArxA4= X-Authority-Analysis: v=2.4 cv=ZfSIpcVA c=1 sm=1 tr=0 ts=6ad77ba8 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=JYCxxj4wjfSeNEK2tAkA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-20_02,2026-10-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 malwarescore=0 spamscore=0 suspectscore=0 clxscore=1015 phishscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610200056 Return mapping errors also for async_pf cases. Otherwise guests will loop forever. Nothing critical just missing error handling. can certainly wait after the merge window, but if anyone has time to review.. Christian Borntraeger (2): KVM: Set up async page faults only for faults that need to wait KVM: selftests: Test that KVM_RUN fails for unresolvable host faults tools/testing/selftests/kvm/Makefile.kvm | 1 + .../selftests/kvm/faultin_sigbus_test.c | 168 ++++++++++++++++++ virt/kvm/kvm_main.c | 1 + 3 files changed, 170 insertions(+) create mode 100644 tools/testing/selftests/kvm/faultin_sigbus_test.c -- 2.53.0