[linux-block.git] / arch / s390 / kernel / kprobes_insn_page.S

/* SPDX-License-Identifier: GPL-2.0 */

#include <linux/linkage.h>

/*
 * insn_page is a special 4k aligned dummy function for kprobes.
 * It will contain all kprobed instructions that are out-of-line executed.
 * The page must be within the kernel image to guarantee that the
 * out-of-line instructions are within 2GB distance of their original
 * location. Using a dummy function ensures that the insn_page is within
 * the text section of the kernel and mapped read-only/executable from
 * the beginning on, thus avoiding to split large mappings if the page
 * would be in the data section instead.
 */
	.section .kprobes.text, "ax"
	.align 4096
ENTRY(kprobes_insn_page)
	.rept 2048
	.word 0x07fe
	.endr
ENDPROC(kprobes_insn_page)
	.previous
Commit	Line	Data
b61e1f32 HC	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#include <linux/linkage.h>
	4
	5	/*
	6	* insn_page is a special 4k aligned dummy function for kprobes.
	7	* It will contain all kprobed instructions that are out-of-line executed.
	8	* The page must be within the kernel image to guarantee that the
	9	* out-of-line instructions are within 2GB distance of their original
	10	* location. Using a dummy function ensures that the insn_page is within
	11	* the text section of the kernel and mapped read-only/executable from
	12	* the beginning on, thus avoiding to split large mappings if the page
	13	* would be in the data section instead.
	14	*/
	15	.section .kprobes.text, "ax"
	16	.align 4096
	17	ENTRY(kprobes_insn_page)
	18	.rept 2048
	19	.word 0x07fe
	20	.endr
	21	ENDPROC(kprobes_insn_page)
	22	.previous