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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/sh/mm/init.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * linux/arch/sh/mm/init.c
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  *
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@@ -11,12 +12,11 @@
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 #include <linux/swap.h>
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 #include <linux/init.h>
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 #include <linux/gfp.h>
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-#include <linux/bootmem.h>
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+#include <linux/memblock.h>
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 #include <linux/proc_fs.h>
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 #include <linux/pagemap.h>
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 #include <linux/percpu.h>
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 #include <linux/io.h>
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-#include <linux/memblock.h>
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 #include <linux/dma-mapping.h>
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 #include <linux/export.h>
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 #include <asm/mmu_context.h>
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@@ -27,7 +27,9 @@
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 #include <asm/sections.h>
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 #include <asm/setup.h>
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 #include <asm/cache.h>
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-#include <asm/sizes.h>
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+#include <asm/pgalloc.h>
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+#include <linux/sizes.h>
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+#include "ioremap.h"
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 pgd_t swapper_pg_dir[PTRS_PER_PGD];
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35
 
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@@ -45,6 +47,7 @@
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 static pte_t *__get_pte_phys(unsigned long addr)
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 {
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 	pgd_t *pgd;
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+	p4d_t *p4d;
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 	pud_t *pud;
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 	pmd_t *pmd;
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@@ -54,7 +57,13 @@
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 		return NULL;
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 	}
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-	pud = pud_alloc(NULL, pgd, addr);
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+	p4d = p4d_alloc(NULL, pgd, addr);
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+	if (unlikely(!p4d)) {
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+		p4d_ERROR(*p4d);
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+		return NULL;
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+	}
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+
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+	pud = pud_alloc(NULL, p4d, addr);
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 	if (unlikely(!pud)) {
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 		pud_ERROR(*pud);
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 		return NULL;
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@@ -128,7 +137,10 @@
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 	if (pud_none(*pud)) {
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 		pmd_t *pmd;
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-		pmd = alloc_bootmem_pages(PAGE_SIZE);
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+		pmd = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
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+		if (!pmd)
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+			panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
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+			      __func__, PAGE_SIZE, PAGE_SIZE);
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 		pud_populate(&init_mm, pud, pmd);
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 		BUG_ON(pmd != pmd_offset(pud, 0));
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 	}
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@@ -141,7 +153,10 @@
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 	if (pmd_none(*pmd)) {
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 		pte_t *pte;
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-		pte = alloc_bootmem_pages(PAGE_SIZE);
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+		pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
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+		if (!pte)
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+			panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
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+			      __func__, PAGE_SIZE, PAGE_SIZE);
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 		pmd_populate_kernel(&init_mm, pmd, pte);
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 		BUG_ON(pte != pte_offset_kernel(pmd, 0));
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 	}
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@@ -166,9 +181,9 @@
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 	unsigned long vaddr;
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 	vaddr = start;
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-	i = __pgd_offset(vaddr);
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-	j = __pud_offset(vaddr);
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-	k = __pmd_offset(vaddr);
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+	i = pgd_index(vaddr);
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+	j = pud_index(vaddr);
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+	k = pmd_index(vaddr);
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 	pgd = pgd_base + i;
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 	for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
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@@ -193,24 +208,16 @@
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 void __init allocate_pgdat(unsigned int nid)
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 {
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 	unsigned long start_pfn, end_pfn;
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-#ifdef CONFIG_NEED_MULTIPLE_NODES
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-	unsigned long phys;
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-#endif
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 	get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
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 #ifdef CONFIG_NEED_MULTIPLE_NODES
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-	phys = __memblock_alloc_base(sizeof(struct pglist_data),
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-				SMP_CACHE_BYTES, end_pfn << PAGE_SHIFT);
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-	/* Retry with all of system memory */
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-	if (!phys)
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-		phys = __memblock_alloc_base(sizeof(struct pglist_data),
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-					SMP_CACHE_BYTES, memblock_end_of_DRAM());
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-	if (!phys)
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+	NODE_DATA(nid) = memblock_alloc_try_nid(
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+				sizeof(struct pglist_data),
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+				SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT,
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+				MEMBLOCK_ALLOC_ACCESSIBLE, nid);
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+	if (!NODE_DATA(nid))
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 		panic("Can't allocate pgdat for node %d\n", nid);
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-
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-	NODE_DATA(nid) = __va(phys);
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-	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
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 #endif
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 	NODE_DATA(nid)->node_start_pfn = start_pfn;
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@@ -219,15 +226,12 @@
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 static void __init do_init_bootmem(void)
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 {
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-	struct memblock_region *reg;
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+	unsigned long start_pfn, end_pfn;
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+	int i;
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 	/* Add active regions with valid PFNs. */
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-	for_each_memblock(memory, reg) {
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-		unsigned long start_pfn, end_pfn;
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-		start_pfn = memblock_region_memory_base_pfn(reg);
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-		end_pfn = memblock_region_memory_end_pfn(reg);
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+	for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL)
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 		__add_active_range(0, start_pfn, end_pfn);
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-	}
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 	/* All of system RAM sits in node 0 for the non-NUMA case */
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 	allocate_pgdat(0);
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@@ -235,12 +239,6 @@
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 	plat_mem_setup();
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-	for_each_memblock(memory, reg) {
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-		int nid = memblock_get_region_node(reg);
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-
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-		memory_present(nid, memblock_region_memory_base_pfn(reg),
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-			memblock_region_memory_end_pfn(reg));
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-	}
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 	sparse_init();
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 }
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@@ -336,7 +334,7 @@
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 	memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
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 	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
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-	free_area_init_nodes(max_zone_pfns);
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+	free_area_init(max_zone_pfns);
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 }
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 unsigned int mem_init_done = 0;
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@@ -350,7 +348,7 @@
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 		high_memory = max_t(void *, high_memory,
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 				    __va(pgdat_end_pfn(pgdat) << PAGE_SHIFT));
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-	free_all_bootmem();
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+	memblock_free_all();
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 	/* Set this up early, so we can take care of the zero page */
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 	cpu_cache_init();
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@@ -406,42 +404,24 @@
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 	mem_init_done = 1;
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 }
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-void free_initmem(void)
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-{
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-	free_initmem_default(-1);
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-}
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-
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-#ifdef CONFIG_BLK_DEV_INITRD
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-void free_initrd_mem(unsigned long start, unsigned long end)
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-{
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-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
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-}
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-#endif
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-
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 #ifdef CONFIG_MEMORY_HOTPLUG
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-int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
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-		bool want_memblock)
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+int arch_add_memory(int nid, u64 start, u64 size,
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+		    struct mhp_params *params)
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 {
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 	unsigned long start_pfn = PFN_DOWN(start);
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 	unsigned long nr_pages = size >> PAGE_SHIFT;
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 	int ret;
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+	if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
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+		return -EINVAL;
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+
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 	/* We only have ZONE_NORMAL, so this is easy.. */
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-	ret = __add_pages(nid, start_pfn, nr_pages, altmap, want_memblock);
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+	ret = __add_pages(nid, start_pfn, nr_pages, params);
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 	if (unlikely(ret))
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 		printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
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 	return ret;
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 }
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-
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-#ifdef CONFIG_NUMA
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-int memory_add_physaddr_to_nid(u64 addr)
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-{
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-	/* Node 0 for now.. */
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-	return 0;
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-}
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-EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
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-#endif
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 void arch_remove_memory(int nid, u64 start, u64 size,
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 			struct vmem_altmap *altmap)