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GET /api/1.0/patches/2175679/?format=api
{ "id": 2175679, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2175679/?format=api", "project": { "id": 10, "url": "http://patchwork.ozlabs.org/api/1.0/projects/10/?format=api", "name": "Linux SPARC Development ", "link_name": "sparclinux", "list_id": "sparclinux.vger.kernel.org", "list_email": "sparclinux@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20251218174749.45965-2-pilgrimtao@gmail.com>", "date": "2025-12-18T17:47:47", "name": "[v3,1/3] sparc: Use vmemmap_populate_hugepages for vmemmap_populate", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e520fd5c35f3e338353e771dec17dc4b7eb69c59", "submitter": { "id": 92282, "url": "http://patchwork.ozlabs.org/api/1.0/people/92282/?format=api", "name": "Chengkaitao", "email": "pilgrimtao@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/sparclinux/patch/20251218174749.45965-2-pilgrimtao@gmail.com/mbox/", "series": [ { "id": 485892, "url": "http://patchwork.ozlabs.org/api/1.0/series/485892/?format=api", "date": "2025-12-18T17:47:46", "name": "Generalize vmemmap_populate_hugepages to sparc", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/485892/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2175679/checks/", "tags": {}, "headers": { "Return-Path": "\n <SRS0=a1Py=6Y=vger.kernel.org=sparclinux+bounces-5826-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "sparclinux@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@ozlabs.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20230601 header.b=DYO/ZFNu;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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In the SPARC architecture, reimplemented vmemmap_populate using\nvmemmap_populate_hugepages.\n2. Allow the SPARC arch to fallback to vmemmap_populate_basepages(),\nwhen vmemmap_alloc_block returns NULL.\n\nSigned-off-by: Chengkaitao <chengkaitao@kylinos.cn>\n---\n arch/sparc/mm/init_64.c | 47 ++++++++++++-----------------------------\n 1 file changed, 14 insertions(+), 33 deletions(-)", "diff": "diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c\nindex df9f7c444c39..f477ab1b4f08 100644\n--- a/arch/sparc/mm/init_64.c\n+++ b/arch/sparc/mm/init_64.c\n@@ -2581,8 +2581,8 @@ unsigned long _PAGE_CACHE __read_mostly;\n EXPORT_SYMBOL(_PAGE_CACHE);\n \n #ifdef CONFIG_SPARSEMEM_VMEMMAP\n-int __meminit vmemmap_populate(unsigned long vstart, unsigned long vend,\n-\t\t\t int node, struct vmem_altmap *altmap)\n+void __meminit vmemmap_set_pmd(pmd_t *pmd, void *p, int node,\n+\t\t\t unsigned long addr, unsigned long next)\n {\n \tunsigned long pte_base;\n \n@@ -2595,39 +2595,20 @@ int __meminit vmemmap_populate(unsigned long vstart, unsigned long vend,\n \n \tpte_base |= _PAGE_PMD_HUGE;\n \n-\tvstart = vstart & PMD_MASK;\n-\tvend = ALIGN(vend, PMD_SIZE);\n-\tfor (; vstart < vend; vstart += PMD_SIZE) {\n-\t\tpgd_t *pgd = vmemmap_pgd_populate(vstart, node);\n-\t\tunsigned long pte;\n-\t\tp4d_t *p4d;\n-\t\tpud_t *pud;\n-\t\tpmd_t *pmd;\n-\n-\t\tif (!pgd)\n-\t\t\treturn -ENOMEM;\n-\n-\t\tp4d = vmemmap_p4d_populate(pgd, vstart, node);\n-\t\tif (!p4d)\n-\t\t\treturn -ENOMEM;\n-\n-\t\tpud = vmemmap_pud_populate(p4d, vstart, node);\n-\t\tif (!pud)\n-\t\t\treturn -ENOMEM;\n-\n-\t\tpmd = pmd_offset(pud, vstart);\n-\t\tpte = pmd_val(*pmd);\n-\t\tif (!(pte & _PAGE_VALID)) {\n-\t\t\tvoid *block = vmemmap_alloc_block(PMD_SIZE, node);\n-\n-\t\t\tif (!block)\n-\t\t\t\treturn -ENOMEM;\n+\tpmd_val(*pmd) = pte_base | __pa(p);\n+}\n \n-\t\t\tpmd_val(*pmd) = pte_base | __pa(block);\n-\t\t}\n-\t}\n+int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node,\n+\t\t\t\tunsigned long addr, unsigned long next)\n+{\n+\tvmemmap_verify((pte_t *)pmdp, node, addr, next);\n+\treturn 1;\n+}\n \n-\treturn 0;\n+int __meminit vmemmap_populate(unsigned long vstart, unsigned long vend,\n+\t\t\t int node, struct vmem_altmap *altmap)\n+{\n+\treturn vmemmap_populate_hugepages(vstart, vend, node, altmap);\n }\n #endif /* CONFIG_SPARSEMEM_VMEMMAP */\n \n", "prefixes": [ "v3", "1/3" ] }