{"id":2175679,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2175679/?format=json","project":{"id":10,"url":"http://patchwork.ozlabs.org/api/1.0/projects/10/?format=json","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=json","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=json","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 ","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 \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"]}