ARM: use LOADADDR() to get load address of sections

stable inclusion
from stable-v5.10.105
commit 29d9b56df1e18a8ff2e669b79e511163972a8b65
category: bugfix
bugzilla: 186460 https://gitee.com/src-openeuler/kernel/issues/I53MHA
CVE: CVE-2022-23960

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=29d9b56df1e1

--------------------------------

commit 8d9d651f upstream.

Use the linker's LOADADDR() macro to get the load address of the
sections, and provide a macro to set the start and end symbols.
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jiahao <chenjiahao16@huawei.com>
Reviewed-by: NLiao Chang <liaochang1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm/include/asm/vmlinux.lds.h

@@ -26,6 +26,11 @@
 #define ARM_MMU_DISCARD(x)	x
 #endif
 
+/* Set start/end symbol names to the LMA for the section */
+#define ARM_LMA(sym, section)						\
+	sym##_start = LOADADDR(section);				\
+	sym##_end = LOADADDR(section) + SIZEOF(section)
+
 #define PROC_INFO							\
 		. = ALIGN(4);						\
 		__proc_info_begin = .;					\
@@ -115,19 +120,19 @@
  * only thing that matters is their relative offsets
  */
 #define ARM_VECTORS							\
-	__vectors_start = .;						\
+	__vectors_lma = .;						\
 	.vectors 0xffff0000 : AT(__vectors_start) {			\
 		*(.vectors)						\
 	}								\
-	. = __vectors_start + SIZEOF(.vectors);				\
-	__vectors_end = .;						\
+	ARM_LMA(__vectors, .vectors);					\
+	. = __vectors_lma + SIZEOF(.vectors);				\
 									\
-	__stubs_start = .;						\
-	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {		\
+	__stubs_lma = .;						\
+	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) {		\
 		*(.stubs)						\
 	}								\
-	. = __stubs_start + SIZEOF(.stubs);				\
-	__stubs_end = .;
+	ARM_LMA(__stubs, .stubs);					\
+	. = __stubs_lma + SIZEOF(.stubs);
 									\
 #define ARM_TCM								\
 	__itcm_start = ALIGN(4);					\