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Tue, 20 Oct 2026 17:58:19 +0000 (GMT) Received: from b35lp69.lnxne.boe (unknown [9.87.84.240]) by smtpav03.wdc07v.mail.ibm.com (Postfix) with ESMTP; Tue, 20 Oct 2026 17:58:19 +0000 (GMT) From: Christian Borntraeger To: Janosch Frank , Claudio Imbrenda , Paolo Bonzini , Sean Christopherson Cc: KVM , Christian Borntraeger , linux-s390 , Shuah Khan Subject: [PATCH v2 0/2] Fix error handling for async_pf Date: Tue, 20 Oct 2026 19:58:16 +0200 Message-ID: <20261020175818.375700-1-borntraeger@linux.ibm.com> X-Mailer: git-send-email 2.53.0 X-Mailing-List: linux-s390@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: AW1haW4tMjYxMDIwMDA3MCBTYWx0ZWRfX1bG11A86HdgZ w0yYqbHwy+ufoCLrlkkC9Qwq2ublcqbRAIXRBA4UaxGLvO2l6/QvxmT/aGCKHJtXfNjCXRYScm4 ypHXb7G784KL+6LaenD81OR8SjatxYF80L547bunmBPN1W2AzpmGHn/MATqrdbBS8sPAledo2Yb DxNxO4cRQyTuAYT4w0XIoYax6bDBwLVBiGN7BzdzOOoVZR1tDEthnxeawq+GcYaJa38Fq2W52be dIE7vAAriJ7t7kmI2koo5GiIHvC4tFkfkkfU2jbupgD7wDLRkQc6QOL7nQQ1hACyc/5v1kDU7Xt cfQQyHfIocjTkbnqkq6ut4i1smye/JXSF6l6DzJrTB5hdR+2xgj/DsSEaueKkfHi0tx6DNUU7v8 HA/kC93ByUmthqZ9KulEKnP5LAXGsf9rCnrr0CSgJOjidRQF4i/ueBeClvspad1AiuyaEzWNcGC oAGayC73Nw/d8HoqegQ== X-Proofpoint-ORIG-GUID: ebKPFl1Mv8rN2aIPwOtBNweBe4pp7ip1 X-Proofpoint-GUID: 2LMV4pCp912SHRs-HirMFPY9wICDxhd_ X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIwMDA3MCBTYWx0ZWRfXyfrZAfE5/gv3 o7eQspZgJjSn0kJZ1iJGBPhufRXT9Opb+z2DedGTChe7SVXesRrEsIP4ZR9kh+J6baOO+6GJTdu SmrkULnkkpDbWPQGQwNJ6b8EaGys2vQ= X-Authority-Analysis: v=2.4 cv=ZfSIpcVA c=1 sm=1 tr=0 ts=6ad7abbf cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==: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_03,2026-10-19_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-2610200070 Return mapping errors also for async_pf cases. Otherwise guests will loop forever. Nothing critical just missing error handling. v1->v2: - !npages instead of npages == 0 (Sean) - new block comment (Sean) - fix testcase to build with 7.3 and 7.4-rc 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 | 169 ++++++++++++++++++ virt/kvm/kvm_main.c | 3 +- 3 files changed, 172 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/faultin_sigbus_test.c -- 2.53.0