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GET /api/1.0/patches/2197720/?format=api
{ "id": 2197720, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197720/?format=api", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.0/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260218114233.266178-24-anisinha@redhat.com>", "date": "2026-02-18T11:42:16", "name": "[v5,23/34] kvm/i8254: refactor pit initialization into a helper", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ca8a8f898fb5567f4e8d77f8027235c00636a4d2", "submitter": { "id": 86030, "url": "http://patchwork.ozlabs.org/api/1.0/people/86030/?format=api", "name": "Ani Sinha", "email": "anisinha@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260218114233.266178-24-anisinha@redhat.com/mbox/", "series": [ { "id": 492541, "url": "http://patchwork.ozlabs.org/api/1.0/series/492541/?format=api", "date": "2026-02-18T11:41:56", "name": "Introduce support for confidential guest reset (x86)", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/492541/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197720/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=cJd3QDPI;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=google header.b=VtclvY6k;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Tsirkin\" <mst@redhat.com>,\n Marcel Apfelbaum <marcel.apfelbaum@gmail.com>", "Cc": "Ani Sinha <anisinha@redhat.com>, kraxel@redhat.com, qemu-devel@nongnu.org", "Subject": "[PATCH v5 23/34] kvm/i8254: refactor pit initialization into a helper", "Date": "Wed, 18 Feb 2026 17:12:16 +0530", "Message-ID": "<20260218114233.266178-24-anisinha@redhat.com>", "X-Mailer": "git-send-email 2.42.0", "In-Reply-To": "<20260218114233.266178-1-anisinha@redhat.com>", "References": "<20260218114233.266178-1-anisinha@redhat.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=170.10.133.124;\n envelope-from=anisinha@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.043,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "The initialization code will be used again by VM file descriptor change\nnotifier callback in a subsequent change. So refactor common code into a new\nhelper function.\n\nSigned-off-by: Ani Sinha <anisinha@redhat.com>\n---\n hw/i386/kvm/i8254.c | 68 +++++++++++++++++++++++++--------------------\n 1 file changed, 38 insertions(+), 30 deletions(-)", "diff": "diff --git a/hw/i386/kvm/i8254.c b/hw/i386/kvm/i8254.c\nindex 81e742f866..255047458a 100644\n--- a/hw/i386/kvm/i8254.c\n+++ b/hw/i386/kvm/i8254.c\n@@ -60,6 +60,43 @@ struct KVMPITClass {\n DeviceRealize parent_realize;\n };\n \n+static void do_pit_initialize(KVMPITState *s, Error **errp)\n+{\n+ struct kvm_pit_config config = {\n+ .flags = 0,\n+ };\n+ int ret;\n+\n+ ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_PIT2, &config);\n+ if (ret < 0) {\n+ error_setg(errp, \"Create kernel PIC irqchip failed: %s\",\n+ strerror(-ret));\n+ return;\n+ }\n+ switch (s->lost_tick_policy) {\n+ case LOST_TICK_POLICY_DELAY:\n+ break; /* enabled by default */\n+ case LOST_TICK_POLICY_DISCARD:\n+ if (kvm_check_extension(kvm_state, KVM_CAP_REINJECT_CONTROL)) {\n+ struct kvm_reinject_control control = { .pit_reinject = 0 };\n+\n+ ret = kvm_vm_ioctl(kvm_state, KVM_REINJECT_CONTROL, &control);\n+ if (ret < 0) {\n+ error_setg(errp,\n+ \"Can't disable in-kernel PIT reinjection: %s\",\n+ strerror(-ret));\n+ return;\n+ }\n+ }\n+ break;\n+ default:\n+ error_setg(errp, \"Lost tick policy not supported.\");\n+ return;\n+ }\n+\n+ return;\n+}\n+\n static void kvm_pit_update_clock_offset(KVMPITState *s)\n {\n int64_t offset, clock_offset;\n@@ -241,42 +278,13 @@ static void kvm_pit_realizefn(DeviceState *dev, Error **errp)\n PITCommonState *pit = PIT_COMMON(dev);\n KVMPITClass *kpc = KVM_PIT_GET_CLASS(dev);\n KVMPITState *s = KVM_PIT(pit);\n- struct kvm_pit_config config = {\n- .flags = 0,\n- };\n- int ret;\n \n if (!kvm_check_extension(kvm_state, KVM_CAP_PIT_STATE2) ||\n !kvm_check_extension(kvm_state, KVM_CAP_PIT2)) {\n error_setg(errp, \"In-kernel PIT not available\");\n }\n \n- ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_PIT2, &config);\n- if (ret < 0) {\n- error_setg(errp, \"Create kernel PIC irqchip failed: %s\",\n- strerror(-ret));\n- return;\n- }\n- switch (s->lost_tick_policy) {\n- case LOST_TICK_POLICY_DELAY:\n- break; /* enabled by default */\n- case LOST_TICK_POLICY_DISCARD:\n- if (kvm_check_extension(kvm_state, KVM_CAP_REINJECT_CONTROL)) {\n- struct kvm_reinject_control control = { .pit_reinject = 0 };\n-\n- ret = kvm_vm_ioctl(kvm_state, KVM_REINJECT_CONTROL, &control);\n- if (ret < 0) {\n- error_setg(errp,\n- \"Can't disable in-kernel PIT reinjection: %s\",\n- strerror(-ret));\n- return;\n- }\n- }\n- break;\n- default:\n- error_setg(errp, \"Lost tick policy not supported.\");\n- return;\n- }\n+ do_pit_initialize(s, errp);\n \n memory_region_init_io(&pit->ioports, OBJECT(dev), NULL, NULL, \"kvm-pit\", 4);\n \n", "prefixes": [ "v5", "23/34" ] }