linux-kernel - [tip: objtool/core] x86: Always inline context_tracking_guest

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Date:   Wed, 15 Sep 2021 15:49:30 -0000
From:   "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: objtool/core] x86: Always inline context_tracking_guest_enter()

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     e25b694bf1d9ef4a3f36c0b85348f8e780f22139
Gitweb:        https://git.kernel.org/tip/e25b694bf1d9ef4a3f36c0b85348f8e780f22139
Author:        Peter Zijlstra <peterz@...radead.org>
AuthorDate:    Thu, 24 Jun 2021 11:41:05 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 15 Sep 2021 15:51:46 +02:00

x86: Always inline context_tracking_guest_enter()

Yes, it really did out-of-line this....

vmlinux.o: warning: objtool: vmx_vcpu_enter_exit()+0x31: call to context_tracking_guest_enter() leaves .noinstr.text section

000000000019f660 <context_tracking_guest_enter>:
  19f660:	e8 00 00 00 00       	callq  19f665 <context_tracking_guest_enter+0x5>	19f661: R_X86_64_PLT32	__sanitizer_cov_trace_pc-0x4
  19f665:	31 c0                	xor    %eax,%eax
  19f667:	c3                   	retq

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20210624095148.003928226@infradead.org
---
 include/linux/context_tracking.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index 4d7fced..7a14807 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -105,7 +105,7 @@ static inline void user_exit_irqoff(void) { }
 static inline enum ctx_state exception_enter(void) { return 0; }
 static inline void exception_exit(enum ctx_state prev_ctx) { }
 static inline enum ctx_state ct_state(void) { return CONTEXT_DISABLED; }
-static inline bool context_tracking_guest_enter(void) { return false; }
+static __always_inline bool context_tracking_guest_enter(void) { return false; }
 static inline void context_tracking_guest_exit(void) { }
 
 #endif /* !CONFIG_CONTEXT_TRACKING */