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GET /api/patches/2232157/?format=api
{ "id": 2232157, "url": "http://patchwork.ozlabs.org/api/patches/2232157/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260503073541.790215-6-eric.auger@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260503073541.790215-6-eric.auger@redhat.com>", "list_archive_url": null, "date": "2026-05-03T07:33:25", "name": "[v4,05/17] scripts: Introduce scripts/aarch64_sysreg_helpers module", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "115d8996f3c5f92faf566064de18ef1052ae3052", "submitter": { "id": 69187, "url": "http://patchwork.ozlabs.org/api/people/69187/?format=api", "name": "Eric Auger", "email": "eric.auger@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260503073541.790215-6-eric.auger@redhat.com/mbox/", "series": [ { "id": 502569, "url": "http://patchwork.ozlabs.org/api/series/502569/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502569", "date": "2026-05-03T07:33:20", "name": "kvm/arm: Introduce a customizable aarch64 KVM host model", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/502569/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232157/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232157/checks/", "tags": {}, "related": [], "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=b6ngjo8E;\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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Sun, 03 May 2026 03:36:30 -0400", "from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com\n (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by\n relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n cipher=TLS_AES_256_GCM_SHA384) id us-mta-543-wcgl63-8PqGzXPQgjseLgg-1; Sun,\n 03 May 2026 03:36:23 -0400", "from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com\n (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS\n id 1160418003FC; Sun, 3 May 2026 07:36:22 +0000 (UTC)", "from laptop.redhat.com (unknown [10.44.48.25])\n by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP\n id 708A61800345; Sun, 3 May 2026 07:36:16 +0000 (UTC)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1777793787;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=2dgC0fflJ1IwtES7qZ7pmfKjjmQsGVnqh8/2aG4sPf8=;\n b=b6ngjo8EV5FNaaotCWC8BZM6QRFlU2VD5FSTr+aocZZfNVvDvfeYjzavOOcryGC+qCOcOl\n GAymv1FaxKKM66LD9o/b9G8Mywqn7BnG2UbKK3sXJlF5DrhdmQiyjoaRbj/q1P5we1fPRt\n eKz39R3/elFk3JqA5WmseOIuTloB12I=", "X-MC-Unique": "wcgl63-8PqGzXPQgjseLgg-1", "X-Mimecast-MFC-AGG-ID": "wcgl63-8PqGzXPQgjseLgg_1777793782", "From": "Eric Auger <eric.auger@redhat.com>", "To": "eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org,\n qemu-arm@nongnu.org, kvmarm@lists.linux.dev, peter.maydell@linaro.org,\n richard.henderson@linaro.org, cohuck@redhat.com, sebott@redhat.com,\n skolothumtho@nvidia.com, philmd@linaro.org", "Cc": "maz@kernel.org, oliver.upton@linux.dev, pbonzini@redhat.com,\n armbru@redhat.com, berrange@redhat.com, abologna@redhat.com,\n jdenemar@redhat.com", "Subject": "[PATCH v4 05/17] scripts: Introduce scripts/aarch64_sysreg_helpers\n module", "Date": "Sun, 3 May 2026 09:33:25 +0200", "Message-ID": "<20260503073541.790215-6-eric.auger@redhat.com>", "In-Reply-To": "<20260503073541.790215-1-eric.auger@redhat.com>", "References": "<20260503073541.790215-1-eric.auger@redhat.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.93", "Received-SPF": "pass client-ip=170.10.129.124;\n envelope-from=eric.auger@redhat.com; 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=-0.001,\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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n SPF_HELO_PASS=-0.001,\n SPF_PASS=-0.001 autolearn=unavailable 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": "We plan to reuse get_opcode() and extract_idregs_from_registers_json()\nfunctions in another script. So let's move them into a module\n\nNo functional change intended.\n\nSigned-off-by: Eric Auger <eric.auger@redhat.com>\n---\n scripts/aarch64_sysreg_helpers.py | 109 +++++++++++++++++++\n scripts/update-aarch64-cpu-sysregs-header.py | 85 +--------------\n 2 files changed, 110 insertions(+), 84 deletions(-)\n create mode 100644 scripts/aarch64_sysreg_helpers.py", "diff": "diff --git a/scripts/aarch64_sysreg_helpers.py b/scripts/aarch64_sysreg_helpers.py\nnew file mode 100644\nindex 0000000000..dd5ec4bafa\n--- /dev/null\n+++ b/scripts/aarch64_sysreg_helpers.py\n@@ -0,0 +1,109 @@\n+#!/usr/bin/env python3\n+\n+# Helpers used in aarch64 sysreg definition generation\n+#\n+# Copyright (C) 2026 Red Hat, Inc.\n+#\n+# Authors: Eric Auger <eric.auger@redhat.com>\n+#\n+# SPDX-License-Identifier: GPL-2.0-or-later\n+\n+\n+import json\n+import os\n+\n+# Some regs have op code values like 000x, 001x. Anyway we don't need\n+# them. Besides some regs are undesired in the generated file such as\n+# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we\n+# are interested in and are tricky to decode as their system accessor\n+# refer to MPIDR_EL1/MIDR_EL1 respectively\n+\n+skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \\\n+ 'VMPIDR_EL2', 'VPIDR_EL2']\n+\n+# returns the int value of a given @opcode for a reg @encoding\n+def get_opcode(encoding, opcode):\n+ fvalue = encoding.get(opcode)\n+ if fvalue:\n+ value = fvalue.get('value')\n+ if isinstance(value, str):\n+ value = value.strip(\"'\")\n+ value = int(value, 2)\n+ return value\n+ return -1\n+\n+def extract_idregs_from_registers_json(filename):\n+ \"\"\"\n+ Load a Registers.json file and extract all ID registers, decode their\n+ opcode and dump the information in target/arm/cpu-sysregs.h.inc\n+\n+ Args:\n+ filename (str): The path to the Registers.json\n+ returns:\n+ idregs: list of ID regs and their encoding\n+ \"\"\"\n+ if not os.path.exists(filename):\n+ print(f\"Error: {filename} could not be found!\")\n+ return {}\n+\n+ try:\n+ with open(filename, 'r') as f:\n+ register_data = json.load(f)\n+\n+ except json.JSONDecodeError:\n+ print(f\"Could not decode json from '{filename}'!\")\n+ return {}\n+ except Exception as e:\n+ print(f\"Unexpected error while reading {filename}: {e}\")\n+ return {}\n+\n+ registers = [r for r in register_data if isinstance(r, dict) and \\\n+ r.get('_type') == 'Register']\n+\n+ idregs = {}\n+\n+ # Some regs have op code values like 000x, 001x. Anyway we don't need\n+ # them. Besides some regs are undesired in the generated file such as\n+ # VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we\n+ # are interested in and are tricky to decode as their system accessor\n+ # refer to MPIDR_EL1/MIDR_EL1 respectively\n+\n+ skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \\\n+ 'VMPIDR_EL2', 'VPIDR_EL2']\n+\n+ for register in registers:\n+ reg_name = register.get('name')\n+\n+ is_skipped = any(term in (reg_name or \"\").upper() for term in skiplist)\n+\n+ if reg_name and not is_skipped:\n+ accessors = register.get('accessors', [])\n+\n+ for accessor in accessors:\n+ type = accessor.get('_type')\n+ if type in ['Accessors.SystemAccessor']:\n+ encoding_list = accessor.get('encoding')\n+\n+ if isinstance(encoding_list, list) and encoding_list and \\\n+ isinstance(encoding_list[0], dict):\n+ encoding_wrapper = encoding_list[0]\n+ encoding_source = encoding_wrapper.get('encodings', \\\n+ encoding_wrapper)\n+\n+ if isinstance(encoding_source, dict):\n+ op0 = get_opcode(encoding_source, 'op0')\n+ op1 = get_opcode(encoding_source, 'op1')\n+ op2 = get_opcode(encoding_source, 'op2')\n+ crn = get_opcode(encoding_source, 'CRn')\n+ crm = get_opcode(encoding_source, 'CRm')\n+ encoding_str=f\"{op0} {op1} {crn} {crm} {op2}\"\n+\n+ # ID regs are assumed within this scope\n+ if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \\\n+ crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):\n+ idregs[reg_name] = encoding_str\n+\n+ return idregs\n+\n+\n+\ndiff --git a/scripts/update-aarch64-cpu-sysregs-header.py b/scripts/update-aarch64-cpu-sysregs-header.py\nindex 8c337147dd..43107264e9 100755\n--- a/scripts/update-aarch64-cpu-sysregs-header.py\n+++ b/scripts/update-aarch64-cpu-sysregs-header.py\n@@ -17,90 +17,7 @@\n import json\n import os\n import sys\n-\n-# Some regs have op code values like 000x, 001x. Anyway we don't need\n-# them. Besides some regs are undesired in the generated file such as\n-# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we\n-# are interested in and are tricky to decode as their system accessor\n-# refer to MPIDR_EL1/MIDR_EL1 respectively\n-\n-skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \\\n- 'VMPIDR_EL2', 'VPIDR_EL2']\n-\n-# returns the int value of a given @opcode for a reg @encoding\n-def get_opcode(encoding, opcode):\n- fvalue = encoding.get(opcode)\n- if fvalue:\n- value = fvalue.get('value')\n- if isinstance(value, str):\n- value = value.strip(\"'\")\n- value = int(value, 2)\n- return value\n- return -1\n-\n-def extract_idregs_from_registers_json(filename):\n- \"\"\"\n- Load a Registers.json file and extract all ID registers, decode their\n- opcode and dump the information in target/arm/cpu-sysregs.h.inc\n-\n- Args:\n- filename (str): The path to the Registers.json\n- returns:\n- idregs: list of ID regs and their encoding\n- \"\"\"\n- if not os.path.exists(filename):\n- print(f\"Error: {filename} could not be found!\")\n- return {}\n-\n- try:\n- with open(filename, 'r') as f:\n- register_data = json.load(f)\n-\n- except json.JSONDecodeError:\n- print(f\"Could not decode json from '{filename}'!\")\n- return {}\n- except Exception as e:\n- print(f\"Unexpected error while reading {filename}: {e}\")\n- return {}\n-\n- registers = [r for r in register_data if isinstance(r, dict) and \\\n- r.get('_type') == 'Register']\n-\n- idregs = {}\n-\n- for register in registers:\n- reg_name = register.get('name')\n-\n- is_skipped = any(term in (reg_name or \"\").upper() for term in skiplist)\n-\n- if reg_name and not is_skipped:\n- accessors = register.get('accessors', [])\n-\n- for accessor in accessors:\n- type = accessor.get('_type')\n- if type in ['Accessors.SystemAccessor']:\n- encoding_list = accessor.get('encoding')\n-\n- if isinstance(encoding_list, list) and encoding_list and \\\n- isinstance(encoding_list[0], dict):\n- encoding_wrapper = encoding_list[0]\n- encoding_source = encoding_wrapper.get('encodings', \\\n- encoding_wrapper)\n-\n- if isinstance(encoding_source, dict):\n- op0 = get_opcode(encoding_source, 'op0')\n- op1 = get_opcode(encoding_source, 'op1')\n- op2 = get_opcode(encoding_source, 'op2')\n- crn = get_opcode(encoding_source, 'CRn')\n- crm = get_opcode(encoding_source, 'CRm')\n- encoding_str=f\"{op0} {op1} {crn} {crm} {op2}\"\n-\n- # ID regs are assumed within this scope\n- if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \\\n- crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):\n- idregs[reg_name] = encoding_str\n-\n- return idregs\n+from aarch64_sysreg_helpers import extract_idregs_from_registers_json\n \n if __name__ == \"__main__\":\n # Single arg expected: the path to the Registers.json file\n", "prefixes": [ "v4", "05/17" ] }