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GET /api/patches/2218441/?format=api
{ "id": 2218441, "url": "http://patchwork.ozlabs.org/api/patches/2218441/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260401081640.26875-3-fengchengwen@huawei.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260401081640.26875-3-fengchengwen@huawei.com>", "list_archive_url": null, "date": "2026-04-01T08:16:34", "name": "[RESEND,v10,2/8] LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "bccdc80bf6d5ea865101c2ca307e2ce051edec70", "submitter": { "id": 92756, "url": "http://patchwork.ozlabs.org/api/people/92756/?format=api", "name": "fengchengwen", "email": "fengchengwen@huawei.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260401081640.26875-3-fengchengwen@huawei.com/mbox/", "series": [ { "id": 498292, "url": "http://patchwork.ozlabs.org/api/series/498292/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=498292", "date": "2026-04-01T08:16:32", "name": "ACPI: Unify CPU UID interface and fix ARM64 TPH steer-tag issue", "version": 10, "mbox": "http://patchwork.ozlabs.org/series/498292/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2218441/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2218441/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-51652-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256\n header.s=dkim header.b=0iNno9Ks;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; 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Wed, 1 Apr 2026 16:16:48 +0800" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775031417; cv=none;\n b=C1wadJXAtY0uDiZsF40n2dOZTz/imeIFTqnphw+/nDcX1dtGUFmgGgUCGSvqlF9oJ4zgNHCqTp/JSFjUuWE+AOYSo2poNAIUBcqUxbd13dLV5VedLsjpc1Tes0pJsmWauVuWum9UpV65hvmG0NhspEfj3K2PAF8MU0gvxi348B0=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775031417; c=relaxed/simple;\n\tbh=fEGzW0HQ9aaEqblExMt3fAmEGfMNM+rKetFSxjUPWu8=;\n\th=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version:Content-Type;\n b=UD7TorTqeNGS9rKHc1R9qCO9TN3WJVMV6tdgy+Rs3eghRJDocFnOcse3JTPXtAnh1TKCS0mA4zFtiGfcXw8bOytLA9ID8Pnn2it8Kq1CLAcuUUNivZDFQX/vQoKbyg1wedddyKESulxFz+t8rZ3nPKQPNAs9x0vyCTE3f5aNo6o=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=quarantine dis=none) header.from=huawei.com;\n spf=pass smtp.mailfrom=huawei.com;\n dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com\n header.b=0iNno9Ks; arc=none smtp.client-ip=113.46.200.220", "dkim-signature": "v=1; a=rsa-sha256; d=huawei.com; s=dkim;\n\tc=relaxed/relaxed; q=dns/txt;\n\th=From;\n\tbh=BAu9Jx0jggsoB9DdjhBMDzv6GW2fgZQZhQIfabnTV1w=;\n\tb=0iNno9KssbzJIwOx46kM6OnZNBBxZqavG7rHHC5bdLxsRgIt4sx/XNjUZTTVDZXEoVFcegx0c\n\tYif2aSgMI7B+vjuMbgqzpMuvUrJW1SQ8yRstGcNtfNLWFUMM/xjzPhZAjZffDLNoeTFLUbEByDb\n\t+8fyvzP5gn6CQVDmf4awY48=", "From": "Chengwen Feng <fengchengwen@huawei.com>", "To": "Bjorn Helgaas <bhelgaas@google.com>, Catalin Marinas\n\t<catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, \"Rafael J .\n Wysocki\" <rafael@kernel.org>", "CC": "Jonathan Corbet <corbet@lwn.net>, WANG Xuerui <kernel@xen0n.name>, Thomas\n Gleixner <tglx@kernel.org>, Dave Hansen <dave.hansen@linux.intel.com>, \"H .\n Peter Anvin\" <hpa@zytor.com>, Juergen Gross <jgross@suse.com>, Boris\n Ostrovsky <boris.ostrovsky@oracle.com>, Len Brown <lenb@kernel.org>, Sunil V\n L <sunilvl@ventanamicro.com>, Mark Rutland <mark.rutland@arm.com>, Jonathan\n Cameron <jonathan.cameron@huawei.com>, Kees Cook <kees@kernel.org>, Yanteng\n Si <si.yanteng@linux.dev>, Sean Christopherson <seanjc@google.com>, Kai Huang\n\t<kai.huang@intel.com>, Tom Lendacky <thomas.lendacky@amd.com>, Thomas Huth\n\t<thuth@redhat.com>, Thorsten Blum <thorsten.blum@linux.dev>, Kevin Loughlin\n\t<kevinloughlin@google.com>, Zheyun Shen <szy0127@sjtu.edu.cn>, Peter Zijlstra\n\t<peterz@infradead.org>, Pawan Gupta <pawan.kumar.gupta@linux.intel.com>, Xin\n Li <xin@zytor.com>, \"Ahmed S . Darwish\" <darwi@linutronix.de>, Sohil Mehta\n\t<sohil.mehta@intel.com>, Ilkka Koskinen <ilkka@os.amperecomputing.com>, Robin\n Murphy <robin.murphy@arm.com>, James Clark <james.clark@linaro.org>, Besar\n Wicaksono <bwicaksono@nvidia.com>, Ma Ke <make24@iscas.ac.cn>, Wei Huang\n\t<wei.huang2@amd.com>, Andy Gospodarek <andrew.gospodarek@broadcom.com>,\n\tSomnath Kotur <somnath.kotur@broadcom.com>, <punit.agrawal@oss.qualcomm.com>,\n\t<guohanjun@huawei.com>, <suzuki.poulose@arm.com>, <ryan.roberts@arm.com>,\n\t<chenl311@chinatelecom.cn>, <masahiroy@kernel.org>,\n\t<wangyuquan1236@phytium.com.cn>, <anshuman.khandual@arm.com>,\n\t<heinrich.schuchardt@canonical.com>, <Eric.VanTassell@amd.com>,\n\t<wangzhou1@hisilicon.com>, <wanghuiqiang@huawei.com>,\n\t<liuyonglong@huawei.com>, <fengchengwen@huawei.com>,\n\t<linux-pci@vger.kernel.org>, <linux-doc@vger.kernel.org>,\n\t<linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>,\n\t<loongarch@lists.linux.dev>, <linux-riscv@lists.infradead.org>,\n\t<xen-devel@lists.xenproject.org>, <linux-acpi@vger.kernel.org>,\n\t<linux-perf-users@vger.kernel.org>, <stable@vger.kernel.org>,\n\t<x86@kernel.org>", "Subject": "[PATCH RESEND v10 2/8] LoongArch: Add acpi_get_cpu_uid() for unified\n ACPI CPU UID retrieval", "Date": "Wed, 1 Apr 2026 16:16:34 +0800", "Message-ID": "<20260401081640.26875-3-fengchengwen@huawei.com>", "X-Mailer": "git-send-email 2.17.1", "In-Reply-To": "<20260401081640.26875-1-fengchengwen@huawei.com>", "References": "<20260401081640.26875-1-fengchengwen@huawei.com>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-ClientProxiedBy": "kwepems200001.china.huawei.com (7.221.188.67) To\n kwepemk500009.china.huawei.com (7.202.194.94)" }, "content": "As a step towards unifying the interface for retrieving ACPI CPU UID\nacross architectures, introduce a new function acpi_get_cpu_uid() for\nloongarch. While at it, add input validation to make the code more\nrobust.\n\nCc: stable@vger.kernel.org\nSigned-off-by: Chengwen Feng <fengchengwen@huawei.com>\nReviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>\n---\n arch/loongarch/include/asm/acpi.h | 1 +\n arch/loongarch/kernel/acpi.c | 9 +++++++++\n 2 files changed, 10 insertions(+)", "diff": "diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h\nindex 7376840fa9f7..8bb101b4557e 100644\n--- a/arch/loongarch/include/asm/acpi.h\n+++ b/arch/loongarch/include/asm/acpi.h\n@@ -44,6 +44,7 @@ static inline u32 get_acpi_id_for_cpu(unsigned int cpu)\n {\n \treturn acpi_core_pic[cpu_logical_map(cpu)].processor_id;\n }\n+int acpi_get_cpu_uid(unsigned int cpu, u32 *uid);\n \n #endif /* !CONFIG_ACPI */\n \ndiff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c\nindex 1367ca759468..058f0dbe8e8f 100644\n--- a/arch/loongarch/kernel/acpi.c\n+++ b/arch/loongarch/kernel/acpi.c\n@@ -385,3 +385,12 @@ int acpi_unmap_cpu(int cpu)\n EXPORT_SYMBOL(acpi_unmap_cpu);\n \n #endif /* CONFIG_ACPI_HOTPLUG_CPU */\n+\n+int acpi_get_cpu_uid(unsigned int cpu, u32 *uid)\n+{\n+\tif (cpu >= nr_cpu_ids)\n+\t\treturn -EINVAL;\n+\t*uid = acpi_core_pic[cpu_logical_map(cpu)].processor_id;\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(acpi_get_cpu_uid);\n", "prefixes": [ "RESEND", "v10", "2/8" ] }