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GET /api/patches/2218437/?format=api
{ "id": 2218437, "url": "http://patchwork.ozlabs.org/api/patches/2218437/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260401081640.26875-8-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": "<20260401081640.26875-8-fengchengwen@huawei.com>", "list_archive_url": null, "date": "2026-04-01T08:16:39", "name": "[RESEND,v10,7/8] ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5fae8e8e9f82b42b68c70efd0fa28e9eb5b19cc5", "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/20260401081640.26875-8-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/2218437/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2218437/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-51657-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=ypbclQg4;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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arc=none smtp.client-ip=113.46.200.219", "dkim-signature": "v=1; a=rsa-sha256; d=huawei.com; s=dkim;\n\tc=relaxed/relaxed; q=dns/txt;\n\th=From;\n\tbh=/eBsZSTPYF/YtxnkPhtkEULxH4VEHo0dKDplLzt2h+U=;\n\tb=ypbclQg4Iukdlkqpoizb0I/F7L+DePAd+M0//lXkMgfo2Tebtl3dWlIRb5T+BpmkoHuv3dAUf\n\tq4obfVRqfYA+w4THr01Bmp7st54V9VWVLRFBbSiDcMjxC61DIiVgmZCmNOX7nmSXAg0dF57r5Ul\n\tC2JQqU6Aei7BxV0EFNUv0ls=", "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 7/8] ACPI: PPTT: Use acpi_get_cpu_uid() and remove\n get_acpi_id_for_cpu()", "Date": "Wed, 1 Apr 2026 16:16:39 +0800", "Message-ID": "<20260401081640.26875-8-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": "Update acpi/pptt.c to use acpi_get_cpu_uid() and remove unused\nget_acpi_id_for_cpu() from arm64/loongarch/riscv, completing PPTT's\nmigration to the unified ACPI CPU UID interface\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/arm64/include/asm/acpi.h | 4 ---\n arch/loongarch/include/asm/acpi.h | 5 ----\n arch/riscv/include/asm/acpi.h | 4 ---\n drivers/acpi/pptt.c | 50 +++++++++++++++++++++++--------\n 4 files changed, 37 insertions(+), 26 deletions(-)", "diff": "diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h\nindex bdb0ecf95b5c..8a54ca6ba602 100644\n--- a/arch/arm64/include/asm/acpi.h\n+++ b/arch/arm64/include/asm/acpi.h\n@@ -114,10 +114,6 @@ static inline bool acpi_has_cpu_in_madt(void)\n }\n \n struct acpi_madt_generic_interrupt *acpi_cpu_get_madt_gicc(int cpu);\n-static inline u32 get_acpi_id_for_cpu(unsigned int cpu)\n-{\n-\treturn\tacpi_cpu_get_madt_gicc(cpu)->uid;\n-}\n int get_cpu_for_acpi_id(u32 uid);\n \n static inline void arch_fix_phys_package_id(int num, u32 slot) { }\ndiff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h\nindex 7376840fa9f7..eda9d4d0a493 100644\n--- a/arch/loongarch/include/asm/acpi.h\n+++ b/arch/loongarch/include/asm/acpi.h\n@@ -40,11 +40,6 @@ extern struct acpi_madt_core_pic acpi_core_pic[MAX_CORE_PIC];\n \n extern int __init parse_acpi_topology(void);\n \n-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-\n #endif /* !CONFIG_ACPI */\n \n #define ACPI_TABLE_UPGRADE_MAX_PHYS ARCH_LOW_ADDRESS_LIMIT\ndiff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h\nindex 6e13695120bc..26ab37c171bc 100644\n--- a/arch/riscv/include/asm/acpi.h\n+++ b/arch/riscv/include/asm/acpi.h\n@@ -61,10 +61,6 @@ static inline void arch_fix_phys_package_id(int num, u32 slot) { }\n \n void acpi_init_rintc_map(void);\n struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu);\n-static inline u32 get_acpi_id_for_cpu(int cpu)\n-{\n-\treturn acpi_cpu_get_madt_rintc(cpu)->uid;\n-}\n \n int acpi_get_riscv_isa(struct acpi_table_header *table,\n \t\t unsigned int cpu, const char **isa);\ndiff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c\nindex de5f8c018333..7bd5bc1f225a 100644\n--- a/drivers/acpi/pptt.c\n+++ b/drivers/acpi/pptt.c\n@@ -459,11 +459,14 @@ static void cache_setup_acpi_cpu(struct acpi_table_header *table,\n {\n \tstruct acpi_pptt_cache *found_cache;\n \tstruct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);\n-\tu32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\tu32 acpi_cpu_id;\n \tstruct cacheinfo *this_leaf;\n \tunsigned int index = 0;\n \tstruct acpi_pptt_processor *cpu_node = NULL;\n \n+\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id) != 0)\n+\t\treturn;\n+\n \twhile (index < get_cpu_cacheinfo(cpu)->num_leaves) {\n \t\tthis_leaf = this_cpu_ci->info_list + index;\n \t\tfound_cache = acpi_find_cache_node(table, acpi_cpu_id,\n@@ -546,7 +549,10 @@ static int topology_get_acpi_cpu_tag(struct acpi_table_header *table,\n \t\t\t\t unsigned int cpu, int level, int flag)\n {\n \tstruct acpi_pptt_processor *cpu_node;\n-\tu32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\tu32 acpi_cpu_id;\n+\n+\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id) != 0)\n+\t\treturn -ENOENT;\n \n \tcpu_node = acpi_find_processor_node(table, acpi_cpu_id);\n \tif (cpu_node) {\n@@ -614,18 +620,22 @@ static int find_acpi_cpu_topology_tag(unsigned int cpu, int level, int flag)\n *\n * Check the node representing a CPU for a given flag.\n *\n- * Return: -ENOENT if the PPTT doesn't exist, the CPU cannot be found or\n- *\t the table revision isn't new enough.\n+ * Return: -ENOENT if can't get CPU's ACPI Processor UID, the PPTT doesn't\n+ *\t exist, the CPU cannot be found or the table revision isn't new\n+ *\t enough.\n *\t 1, any passed flag set\n *\t 0, flag unset\n */\n static int check_acpi_cpu_flag(unsigned int cpu, int rev, u32 flag)\n {\n \tstruct acpi_table_header *table;\n-\tu32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\tu32 acpi_cpu_id;\n \tstruct acpi_pptt_processor *cpu_node = NULL;\n \tint ret = -ENOENT;\n \n+\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id) != 0)\n+\t\treturn -ENOENT;\n+\n \ttable = acpi_get_pptt();\n \tif (!table)\n \t\treturn -ENOENT;\n@@ -651,7 +661,8 @@ static int check_acpi_cpu_flag(unsigned int cpu, int rev, u32 flag)\n * in the PPTT. Errors caused by lack of a PPTT table, or otherwise, return 0\n * indicating we didn't find any cache levels.\n *\n- * Return: -ENOENT if no PPTT table or no PPTT processor struct found.\n+ * Return: -ENOENT if no PPTT table, can't get CPU's ACPI Process UID or no PPTT\n+ *\t processor struct found.\n *\t 0 on success.\n */\n int acpi_get_cache_info(unsigned int cpu, unsigned int *levels,\n@@ -671,7 +682,9 @@ int acpi_get_cache_info(unsigned int cpu, unsigned int *levels,\n \n \tpr_debug(\"Cache Setup: find cache levels for CPU=%d\\n\", cpu);\n \n-\tacpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id))\n+\t\treturn -ENOENT;\n+\n \tcpu_node = acpi_find_processor_node(table, acpi_cpu_id);\n \tif (!cpu_node)\n \t\treturn -ENOENT;\n@@ -780,8 +793,9 @@ int find_acpi_cpu_topology_package(unsigned int cpu)\n * It may not exist in single CPU systems. In simple multi-CPU systems,\n * it may be equal to the package topology level.\n *\n- * Return: -ENOENT if the PPTT doesn't exist, the CPU cannot be found\n- * or there is no toplogy level above the CPU..\n+ * Return: -ENOENT if the PPTT doesn't exist, can't get CPU's ACPI\n+ * Processor UID, the CPU cannot be found or there is no toplogy level\n+ * above the CPU.\n * Otherwise returns a value which represents the package for this CPU.\n */\n \n@@ -797,7 +811,9 @@ int find_acpi_cpu_topology_cluster(unsigned int cpu)\n \tif (!table)\n \t\treturn -ENOENT;\n \n-\tacpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id) != 0)\n+\t\treturn -ENOENT;\n+\n \tcpu_node = acpi_find_processor_node(table, acpi_cpu_id);\n \tif (!cpu_node || !cpu_node->parent)\n \t\treturn -ENOENT;\n@@ -872,7 +888,9 @@ static void acpi_pptt_get_child_cpus(struct acpi_table_header *table_hdr,\n \tcpumask_clear(cpus);\n \n \tfor_each_possible_cpu(cpu) {\n-\t\tacpi_id = get_acpi_id_for_cpu(cpu);\n+\t\tif (acpi_get_cpu_uid(cpu, &acpi_id) != 0)\n+\t\t\tcontinue;\n+\n \t\tcpu_node = acpi_find_processor_node(table_hdr, acpi_id);\n \n \t\twhile (cpu_node) {\n@@ -966,10 +984,13 @@ int find_acpi_cache_level_from_id(u32 cache_id)\n \tfor_each_possible_cpu(cpu) {\n \t\tbool empty;\n \t\tint level = 1;\n-\t\tu32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\t\tu32 acpi_cpu_id;\n \t\tstruct acpi_pptt_cache *cache;\n \t\tstruct acpi_pptt_processor *cpu_node;\n \n+\t\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id) != 0)\n+\t\t\tcontinue;\n+\n \t\tcpu_node = acpi_find_processor_node(table, acpi_cpu_id);\n \t\tif (!cpu_node)\n \t\t\tcontinue;\n@@ -1030,10 +1051,13 @@ int acpi_pptt_get_cpumask_from_cache_id(u32 cache_id, cpumask_t *cpus)\n \tfor_each_possible_cpu(cpu) {\n \t\tbool empty;\n \t\tint level = 1;\n-\t\tu32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);\n+\t\tu32 acpi_cpu_id;\n \t\tstruct acpi_pptt_cache *cache;\n \t\tstruct acpi_pptt_processor *cpu_node;\n \n+\t\tif (acpi_get_cpu_uid(cpu, &acpi_cpu_id) != 0)\n+\t\t\tcontinue;\n+\n \t\tcpu_node = acpi_find_processor_node(table, acpi_cpu_id);\n \t\tif (!cpu_node)\n \t\t\tcontinue;\n", "prefixes": [ "RESEND", "v10", "7/8" ] }