LoongArch: Fix an issue with relocatable vmlinux

Normally vmlinux for LoongArch is of ET_EXEC type, while if built with CONFIG_RELOCATABLE (this is PIE) and Clang, it will be of ET_DYN type. Meanwhile, physical address field of segments in vmlinux has actually the same value as virtual address field. Similar to arm64, this patch allows to unconditionally skip the check on LoongArch. Link: ClangBuiltLinux/linux#1963 Signed-off-by: WANG Rui <[email protected]> Reviewed-by: Huacai Chen <[email protected]> Signed-off-by: Simon Horman <[email protected]>
horms · Nov 27, 2023 · eaa717e · eaa717e
1 parent 769ae43
commit eaa717e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/kexec/kexec-elf-exec.c b/kexec/kexec-elf-exec.c
@@ -39,12 +39,13 @@ static int get_elf_exec_load_base(struct mem_ehdr *ehdr, struct kexec_info *info
 	unsigned long first, last;
 	size_t i;
 
-	/* Note on arm64:
+	/* Note on arm64 and loongarch64:
 	 * arm64's vmlinux has virtual address in physical address
 	 * field of PT_LOAD segments. So the following validity check
 	 * and relocation makes no sense on arm64.
+	 * This is also applies to LoongArch.
 	 */
-	if (ehdr->e_machine == EM_AARCH64)
+	if (ehdr->e_machine == EM_AARCH64 || ehdr->e_machine == EM_LOONGARCH)
 		return 0;
 
 	first = ULONG_MAX;