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GET /api/1.1/patches/2228844/?format=api
{ "id": 2228844, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2228844/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427124738.966578-33-peter.maydell@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/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": "<20260427124738.966578-33-peter.maydell@linaro.org>", "date": "2026-04-27T12:47:06", "name": "[PULL,32/63] target/arm/machine: Handle ToleranceNotOnBothEnds migration tolerances", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "37d61d1465f7974a2a63db8fbd0500cde103b47c", "submitter": { "id": 5111, "url": "http://patchwork.ozlabs.org/api/1.1/people/5111/?format=api", "name": "Peter Maydell", "email": "peter.maydell@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427124738.966578-33-peter.maydell@linaro.org/mbox/", "series": [ { "id": 501642, "url": "http://patchwork.ozlabs.org/api/1.1/series/501642/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501642", "date": "2026-04-27T12:46:34", "name": "[PULL,01/63] docs/system: add FEAT_AA32 and FEAT_AA64 to emulation list", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501642/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2228844/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2228844/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 (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=evL/9kjq;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g43T10pQFz1yJX\n\tfor <incoming@patchwork.ozlabs.org>; Mon, 27 Apr 2026 22:55:33 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wHLUH-0006nB-EF; Mon, 27 Apr 2026 08:54:58 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <peter.maydell@linaro.org>)\n id 1wHLNq-00086E-O0\n for qemu-devel@nongnu.org; Mon, 27 Apr 2026 08:48:26 -0400", "from mail-wm1-x32e.google.com ([2a00:1450:4864:20::32e])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <peter.maydell@linaro.org>)\n id 1wHLNj-0005g4-43\n for qemu-devel@nongnu.org; Mon, 27 Apr 2026 08:48:14 -0400", "by mail-wm1-x32e.google.com with SMTP id\n 5b1f17b1804b1-488a9033b2cso109080205e9.2\n for <qemu-devel@nongnu.org>; Mon, 27 Apr 2026 05:48:10 -0700 (PDT)", "from lanath.. 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[81.2.115.145])\n by smtp.gmail.com with ESMTPSA id\n 5b1f17b1804b1-488ffc5e3f4sm448974115e9.2.2026.04.27.05.48.08\n for <qemu-devel@nongnu.org>\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Mon, 27 Apr 2026 05:48:08 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=linaro.org; s=google; t=1777294089; x=1777898889; darn=nongnu.org;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:to:from:from:to:cc:subject:date:message-id\n :reply-to; bh=YY1tm1vPSzbBUTbdxWQFuXKrfsrK/NMFeG62EkzTKa8=;\n b=evL/9kjqwa/E4E1a/+U/HMKpW9w7tbiIXmjvEHRMbQRYuoXtp1PtriTcJG3+vQH6jr\n qM0Lycr1vdZSaISbPspR5ZucYbwtzId/5H/StETcMC3i0e5pqcm62hUuLVG22B8cEc8e\n RxfxNT+zHL36xWsmrOLdBgHF80VLFjziivTuibqVJEj4hw64cragtm6m5JSos/GPczyS\n ZyqIqvofDxOEc9Rwm5UOlceaClfFDcJOdBNw7TtNL9OEmjzOMDqkWbwPeQ8vmfjAObSJ\n 9RMIVd7KQ4YYYjwbQ714ZUZZnP8R34ZN3cD+RgYZv/OOxYz++uTWk3dcZIxWT2YshZ6A\n wptw==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1777294089; x=1777898889;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to\n :cc:subject:date:message-id:reply-to;\n bh=YY1tm1vPSzbBUTbdxWQFuXKrfsrK/NMFeG62EkzTKa8=;\n b=clsC0eAUhBxJRGqPuUikUFucICPki/8i3r7F+dWjeaD3VCj1hUpPAR49fIscQEaouu\n Ey+6mcYRqTJj0rwv0AyNOpaVdp0KhXvXoaXPPE/feib/0MXS3lObeQM5fHKsvUo6CGaY\n VqwDY0Xl+fS7+UpIbNfwKwqzJ3UfR4IoXGYrJYs9UBEqOPvufeHLT71w3F8mE9YUwhbF\n Y/tS84DzEVlAwrAiIcCtvZ6JyiFXi4NOAD2AGB1K2ylMHFOA4cp0rxTPDh9dSm3cBtId\n 2hWXK0Fo4DJkRhx7Wdv1HDxKBS2YQV7dpxFNskGkKdpaJMmEC3UzEJ21RsLedTg46Pg7\n DCOw==", "X-Gm-Message-State": "AOJu0YzxqM1KKABZgt9dmvmaUAhfJC9f23506JQ/o53+1qRnHTT3htmT\n DsP64DQg+hKehLtq9LEtfkl0Yrlscqyg7kjSJkpLnsoi0bDnf0OwZI3s9IjuZZw/tFq0cE4KNnL\n 8vby/", "X-Gm-Gg": "AeBDietcBH2zIQM+pe5TKZnA12QlVGE3RpfkX0WB2cHCiPuymOO1hVzHNT4NApOm36F\n j++an1h0d7UkcDMBGejhUP2uIY5oOa64PcEiw7+lvW0dI1Ic4ef8uA/oHe9R9iRqDM8vlellli4\n J8nOAgC4asTeCWBX1nQXuHgwu5Uvs6aNw8ug/Ncq1RZRuqWh45v7SAIKl83lln7JyCgCA6P3k4B\n LOfC7/i10Wyjma9CGvTj9XJMgF2ejvtpPqNAJ8h64Qsl55ZT3sQTwf0TzK0LaKxchdv3eJ6zTYA\n a/s13ds8Al8eCcJL4B/ELIXpZ06Bg+LlEliDuqkK1q01afI59CBM0FltBHo5hPoh+k/rjyrVuvS\n PNbqfd8FAwE31mzVMeISJ+idOr3fRlnjsVi9m7xDwiZLD9VKb+jT22k78WOhVAxgmHc+UJI5Ki8\n K76xopTgacmLWz5KCR8ZM8MjloAdVQou4tlEY+awa7vy3Q+tChf9kx7mHQbvjxHJcTimbQpFwmk\n cil6c1AjHby5pmirrjKYGUlyB4OzBg5N6RjgA38zQ==", "X-Received": "by 2002:a05:600c:19c8:b0:48a:554d:b9a2 with SMTP id\n 5b1f17b1804b1-48a554dba51mr430812665e9.6.1777294089274;\n Mon, 27 Apr 2026 05:48:09 -0700 (PDT)", "From": "Peter Maydell <peter.maydell@linaro.org>", "To": "qemu-devel@nongnu.org", "Subject": "[PULL 32/63] target/arm/machine: Handle ToleranceNotOnBothEnds\n migration tolerances", "Date": "Mon, 27 Apr 2026 13:47:06 +0100", "Message-ID": "<20260427124738.966578-33-peter.maydell@linaro.org>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260427124738.966578-1-peter.maydell@linaro.org>", "References": "<20260427124738.966578-1-peter.maydell@linaro.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::32e;\n envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32e.google.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, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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": "From: Eric Auger <eric.auger@redhat.com>\n\nIf there is a mismatch between the cpreg indexes found on both ends,\ncheck whether a tolerance was registered for the given kvmidx. If any,\nsilence warning/errors.\n\nSigned-off-by: Eric Auger <eric.auger@redhat.com>\nReviewed-by: Peter Maydell <peter.maydell@linaro.org>\nMessage-id: 20260420140552.104369-3-eric.auger@redhat.com\nSigned-off-by: Peter Maydell <peter.maydell@linaro.org>\n---\n target/arm/machine.c | 21 +++++++++++++++------\n target/arm/trace-events | 2 ++\n 2 files changed, 17 insertions(+), 6 deletions(-)", "diff": "diff --git a/target/arm/machine.c b/target/arm/machine.c\nindex 50d80ffb68..b2bf129334 100644\n--- a/target/arm/machine.c\n+++ b/target/arm/machine.c\n@@ -1063,25 +1063,34 @@ static void handle_cpreg_missing_in_incoming_stream(ARMCPU *cpu, uint64_t kvmidx\n {\n g_autofree gchar *name = print_register_name(kvmidx);\n \n+ if (arm_cpu_match_cpreg_mig_tolerance(cpu, kvmidx,\n+ 0, 0, ToleranceNotOnBothEnds)) {\n+ trace_tolerate_cpreg_missing_in_incoming_stream(name);\n+ return;\n+ }\n warn_report(\"%s: %s \"\n \"expected by the destination but not in the incoming stream: \"\n \"skip it\", __func__, name);\n }\n \n /*\n- * Handle the situation where @kvmidx is in the incoming stream\n- * but not on destination. This currently fails the migration but\n- * we plan to accomodate some exceptions, hence the boolean returned value.\n+ * Handle the situation where @kvmidx is in the incoming\n+ * stream but not on destination. This fails the migration if\n+ * no cpreg mig tolerance is matched for this @kvmidx\n+ * Return true if the migration should eventually fail\n */\n static bool handle_cpreg_only_in_incoming_stream(ARMCPU *cpu, uint64_t kvmidx)\n {\n g_autofree gchar *name = print_register_name(kvmidx);\n- bool fail = true;\n \n+ if (arm_cpu_match_cpreg_mig_tolerance(cpu, kvmidx,\n+ 0, 0, ToleranceNotOnBothEnds)) {\n+ trace_tolerate_cpreg_only_in_incoming_stream(name);\n+ return false;\n+ }\n error_report(\"%s: %s in the incoming stream but unknown on the \"\n \"destination: fail migration\", __func__, name);\n-\n- return fail;\n+ return true;\n }\n \n static int cpu_post_load(void *opaque, int version_id)\ndiff --git a/target/arm/trace-events b/target/arm/trace-events\nindex 2de0406f78..8502fb3265 100644\n--- a/target/arm/trace-events\n+++ b/target/arm/trace-events\n@@ -29,3 +29,5 @@ arm_psci_call(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3, uint32_t cpuid\n \n # machine.c\n cpu_post_load(uint32_t cpreg_vmstate_array_len, uint32_t cpreg_array_len) \"cpreg_vmstate_array_len=%d cpreg_array_len=%d\"\n+tolerate_cpreg_missing_in_incoming_stream(char *name) \"%s is missing in incoming stream but this is explicitly tolerated\"\n+tolerate_cpreg_only_in_incoming_stream(char *name) \"%s is in incoming stream but not on destination but this is explicitly tolerated\"\n", "prefixes": [ "PULL", "32/63" ] }