From: Peter Zijlstra <peterz@infradead.org>
To: x86@kernel.org, jpoimboe@redhat.com
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
elver@google.com, jbaron@akamai.com, rostedt@goodmis.org,
ardb@kernel.org, mark.rutland@arm.com
Subject: [PATCH 6/7] x86: Always inline on_thread_stack() and current_top_of_stack()
Date: Thu, 26 May 2022 12:52:58 +0200 [thread overview]
Message-ID: <20220526105958.071435483@infradead.org> (raw)
In-Reply-To: 20220526105252.440440893@infradead.org
Becaues GCC clearly lost it's marbles again...
vmlinux.o: warning: objtool: enter_from_user_mode+0x4e: call to on_thread_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x53: call to on_thread_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x4e: call to on_thread_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x4e: call to on_thread_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: enter_from_user_mode+0x4e: call to current_top_of_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x53: call to current_top_of_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x4e: call to current_top_of_stack() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x4e: call to current_top_of_stack() leaves .noinstr.text section
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/processor.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -559,7 +559,7 @@ static __always_inline void native_swapg
#endif
}
-static inline unsigned long current_top_of_stack(void)
+static __always_inline unsigned long current_top_of_stack(void)
{
/*
* We can't read directly from tss.sp0: sp0 on x86_32 is special in
@@ -569,7 +569,7 @@ static inline unsigned long current_top_
return this_cpu_read_stable(cpu_current_top_of_stack);
}
-static inline bool on_thread_stack(void)
+static __always_inline bool on_thread_stack(void)
{
return (unsigned long)(current_top_of_stack() -
current_stack_pointer) < THREAD_SIZE;
next prev parent reply other threads:[~2022-05-26 11:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-26 10:52 [PATCH 0/7] x86: Address various objtool complaints Peter Zijlstra
2022-05-26 10:52 ` [PATCH 1/7] x86/entry: Anchor annotation Peter Zijlstra
2022-05-26 15:04 ` Josh Poimboeuf
2022-05-26 10:52 ` [PATCH 2/7] objtool: Extend UNWIND_HINT based ENDBR rules Peter Zijlstra
2022-05-26 15:05 ` Josh Poimboeuf
2022-05-28 14:09 ` Peter Zijlstra
2022-05-26 10:52 ` [PATCH 3/7] objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn Peter Zijlstra
2022-05-30 13:17 ` Marco Elver
2022-05-26 10:52 ` [PATCH 4/7] x86/cpu: Elide KCSAN for cpu_has() and friends Peter Zijlstra
2022-05-30 13:14 ` Marco Elver
2022-05-26 10:52 ` [PATCH 5/7] jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds Peter Zijlstra
2022-05-30 13:20 ` Marco Elver
2022-05-26 10:52 ` Peter Zijlstra [this message]
2022-05-30 10:38 ` [tip: objtool/urgent] x86: Always inline on_thread_stack() and current_top_of_stack() tip-bot2 for Peter Zijlstra
2022-05-30 13:21 ` [PATCH 6/7] " Marco Elver
2022-05-26 10:52 ` [PATCH 7/7] context_tracking: Always inline empty stubs Peter Zijlstra
2022-05-26 15:02 ` Josh Poimboeuf
2022-05-26 15:10 ` Mark Rutland
2022-05-26 15:16 ` Josh Poimboeuf
2022-05-26 15:26 ` Mark Rutland
2022-05-30 10:38 ` [tip: objtool/urgent] " tip-bot2 for Peter Zijlstra
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