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Mon, 1 Dec 2025 12:45:12 +0000 (GMT) From: Janosch Frank To: pbonzini@redhat.com Cc: kvm@vger.kernel.org, frankja@linux.ibm.com, david@redhat.com, borntraeger@linux.ibm.com, cohuck@redhat.com, linux-s390@vger.kernel.org, imbrenda@linux.ibm.com, hca@linux.ibm.com, Andrew Donnellan Subject: [GIT PULL 08/10] KVM: s390: Add signal_exits counter Date: Mon, 1 Dec 2025 13:33:50 +0100 Message-ID: <20251201124334.110483-9-frankja@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251201124334.110483-1-frankja@linux.ibm.com> References: <20251201124334.110483-1-frankja@linux.ibm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=dK+rWeZb c=1 sm=1 tr=0 ts=692d8dde cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=wP3pNCr1ah4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=G-lmFN37WTdQfOt6kDkA:9 X-Proofpoint-GUID: Srn4eFlzuaFnJSvkeu2koepa_BKPCrcw X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTI5MDAyMCBTYWx0ZWRfX0R43SV0PPzVw 82DJ6JCj6zlXYF7d2eUIxpcE/WpgNkSXAO4usD8Y+6TMdWDNQNwW+qBSVsTiHuscn8CdiVOwkMs ya9u8ugN54vCBBBhWMESwHRuHl9/pPfXjzLvbv+nJQgr20AWfRazfqw9UNQkpgwajcKiuTkcoNg jbp0qcVvrNJTstjSy4GRjlWu2v5KFB5VKy+5GWM/dSA/5wxCrLdjmnxaDSywaV1Bfvs4urAjP0E GBEM181p55XH7FucJbEDwz3wQbcqjQe+TvODFFwsWr62+jl7BTsUJZQM2wZp//77qDrIkqxrxdO m55k9FAvZGsEuAVlEg6JmQwwQHArSH2VPXfqzzo2hrSqWK7+Ouh2T5/idmqEFBzNh8lwHCv1b1W HtfJsRJP4r8yfj0v3hjEoAtWPCZlGw== X-Proofpoint-ORIG-GUID: Srn4eFlzuaFnJSvkeu2koepa_BKPCrcw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-28_08,2025-11-27_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 adultscore=0 phishscore=0 impostorscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511290020 From: Andrew Donnellan Add a signal_exits counter for s390, as exists on arm64, loongarch, mips, powerpc, riscv and x86. This is used by kvm_handle_signal_exit(), which we will use when we later enable CONFIG_VIRT_XFER_TO_GUEST_WORK. Signed-off-by: Andrew Donnellan Reviewed-by: Janosch Frank Signed-off-by: Janosch Frank --- arch/s390/include/asm/kvm_host.h | 1 + arch/s390/kvm/kvm-s390.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 1e4829c70216..ae1223264d3c 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -146,6 +146,7 @@ struct kvm_vcpu_stat { u64 instruction_diagnose_500; u64 instruction_diagnose_other; u64 pfault_sync; + u64 signal_exits; }; #define PGM_OPERATION 0x01 diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 56d4730b7c41..8db37e508a71 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -185,7 +185,8 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { STATS_DESC_COUNTER(VCPU, instruction_diagnose_308), STATS_DESC_COUNTER(VCPU, instruction_diagnose_500), STATS_DESC_COUNTER(VCPU, instruction_diagnose_other), - STATS_DESC_COUNTER(VCPU, pfault_sync) + STATS_DESC_COUNTER(VCPU, pfault_sync), + STATS_DESC_COUNTER(VCPU, signal_exits) }; const struct kvm_stats_header kvm_vcpu_stats_header = { @@ -5251,6 +5252,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) if (signal_pending(current) && !rc) { kvm_run->exit_reason = KVM_EXIT_INTR; + vcpu->stat.signal_exits++; rc = -EINTR; } -- 2.52.0