内存管理之内存初始化内存管理...

1.c

@@ -0,0 +1,23 @@
+void __init bootmem_init(void)
+{
+    unsigned long min, max;
+
+    min = PFN_UP(memblock_start_of_DRAM());
+    max = PFN_DOWN(memblock_end_of_DRAM());
+
+    early_memtest(min << PAGE_SHIFT, max << PAGE_SHIFT);
+
+    max_pfn = max_low_pfn = max;
+
+    arm64_numa_init();
+    /*
+     * Sparsemem tries to allocate bootmem in memory_present(), so must be
+     * done after the fixed reservations.
+     */
+    arm64_memory_present();
+
+    sparse_init();
+    zone_sizes_init(min, max);
+
+    high_memory = __va((max << PAGE_SHIFT) - 1) + 1;
+    memblock_dump_all();