linux/arch/x86/entry/thunk.S

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Save registers before calling assembly functions. This avoids
 * disturbance of register allocation in some inline assembly constructs.
 * Copyright 2001,2002 by Andi Kleen, SuSE Labs.
 */
#include <linux/export.h>
#include <linux/linkage.h>
#include "calling.h"
#include <asm/asm.h>

THUNK preempt_schedule_thunk, preempt_schedule
THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace
EXPORT_SYMBOL(preempt_schedule_thunk)
EXPORT_SYMBOL(preempt_schedule_notrace_thunk)
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 474 Based on 1 normalized pattern(s): subject to the gnu public license v 2 no warranty of any kind extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 2 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081203.641025917@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-06-04 10:11:07 +02:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
[PATCH] Remove leftover CVS Id in thunk.S And move the comment to a proper place. Signed-off-by: Andi Kleen <ak@suse.de> 2006-09-26 10:52:29 +02:00			`/*`
			`* Save registers before calling assembly functions. This avoids`
			`* disturbance of register allocation in some inline assembly constructs.`
			`* Copyright 2001,2002 by Andi Kleen, SuSE Labs.`
			`*/`
x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> The following commit: ddb5cdbafaaa ("kbuild: generate KSYMTAB entries by modpost") deprecated <asm/export.h>, which is now a wrapper of <linux/export.h>. Use <linux/export.h> in .S as well as in .c files. After all the <asm/export.h> lines are replaced, <asm/export.h> and <asm-generic/export.h> will be removed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20230806145958.380314-2-masahiroy@kernel.org 2023-08-06 23:59:56 +09:00			`#include <linux/export.h>`
x86, asm: Cleanup thunk_64.S Drop thunk_ra macro in favor of an additional argument to the thunk macro since their bodies are almost identical. Do a whitespace scrubbing and use CFI-aware macros for full annotation. Signed-off-by: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1306873314-32523-5-git-send-email-bp@alien8.de Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> 2011-05-31 22:21:54 +02:00			`#include <linux/linkage.h>`
x86/asm/entry: Move arch/x86/include/asm/calling.h to arch/x86/entry/ asm/calling.h is private to the entry code, make this more apparent by moving it to the new arch/x86/entry/ directory. Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> 2015-06-03 18:29:26 +02:00			`#include "calling.h"`
kprobes, x86: Prohibit probing on thunk functions and restore thunk/restore functions are also used for tracing irqoff etc. and those are involved in kprobe's exception handling. Prohibit probing on them to avoid kernel crash. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20140417081726.26341.3872.stgit@ltc230.yrl.intra.hitachi.co.jp Signed-off-by: Ingo Molnar <mingo@kernel.org> 2014-04-17 17:17:26 +09:00			`#include <asm/asm.h>`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00
x86/entry: Move thunk restore code into thunk functions There's no need for both thunk functions to jump to the same shared thunk restore code which lives outside the thunk function boundaries. It disrupts i-cache locality and confuses objtool. Keep it simple by keeping each thunk's restore code self-contained within the function. Fixes a bunch of false positive "missing __noreturn" warnings like: vmlinux.o: warning: objtool: do_arch_prctl_common+0xf4: preempt_schedule_thunk() is missing a __noreturn annotation Fixes: fedb724c3db5 ("objtool: Detect missing __noreturn annotations") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202305281037.3PaI3tW4-lkp@intel.com/ Link: https://lore.kernel.org/r/46aa8aeb716f302e22e1673ae15ee6fe050b41f4.1685488050.git.jpoimboe@kernel.org Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> 2023-05-30 16:07:41 -07:00			`THUNK preempt_schedule_thunk, preempt_schedule`
			`THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace`
			`EXPORT_SYMBOL(preempt_schedule_thunk)`
			`EXPORT_SYMBOL(preempt_schedule_notrace_thunk)`