1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <stdio.h> 4 #include <string.h> 5 #include "debug.h" 6 #include "symbol.h" 7 8 /* On arm64, kernel text segment start at high memory address, 9 * for example 0xffff 0000 8xxx xxxx. Modules start at a low memory 10 * address, like 0xffff 0000 00ax xxxx. When only samll amount of 11 * memory is used by modules, gap between end of module's text segment 12 * and start of kernel text segment may be reach 2G. 13 * Therefore do not fill this gap and do not assign it to the kernel dso map. 14 */ 15 16 #define SYMBOL_LIMIT (1 << 12) /* 4K */ 17 18 void arch__symbols__fixup_end(struct symbol *p, struct symbol *c) 19 { 20 if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) || 21 (strchr(p->name, '[') == NULL && strchr(c->name, '['))) 22 /* Limit range of last symbol in module and kernel */ 23 p->end += SYMBOL_LIMIT; 24 else 25 p->end = c->start; 26 pr_debug4("%s sym:%s end:%#lx\n", __func__, p->name, p->end); 27 } 28