Josh Poimboeuf 3335224470 jump_label: Explicitly disable jump labels in __init code ... After initmem has been freed, any jump labels in __init code are prevented from being written to by the kernel_text_address() check in __jump_label_update(). However, this check is quite broad. If kernel_text_address() were to return false for any other reason, the jump label write would fail silently with no warning. For jump labels in module init code, entry->code is set to zero to indicate that the entry is disabled. Do the same thing for core kernel init code. This makes the behavior more consistent, and will also make it more straightforward to detect non-init jump label write failures in the next patch. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@suse.de> Cc: Jason Baron <jbaron@akamai.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/c52825c73f3a174e8398b6898284ec20d4deb126.1519051220.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-02-21 16:54:05 +01:00
..
calibrate.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts_initrd.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts_md.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts_rd.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts.c	kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK	2017-11-15 18:21:04 -08:00
do_mounts.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
init_task.c	Expand the INIT_SIGNALS and INIT_SIGHAND macros and remove	2018-01-17 11:30:16 +00:00
initramfs.c	initramfs: use time64_t timestamps	2017-11-17 16:10:04 -08:00
Kconfig	membarrier: Provide core serializing command, *_SYNC_CORE	2018-02-05 21:35:03 +01:00
main.c	jump_label: Explicitly disable jump labels in __init code	2018-02-21 16:54:05 +01:00
Makefile	Construct init thread stack in the linker script rather than by union	2018-01-09 23:21:02 +00:00
noinitramfs.c	init: mark __user address space on string literals	2010-10-26 16:52:15 -07:00
version.c	init/version.c: include <linux/export.h> instead of <linux/module.h>	2017-11-17 16:10:02 -08:00