linux-kernel - [PATCH v3 char-misc 1/1] x86/hyperv: Add interrupt handler annotations

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Message-Id: <1523468075-12713-1-git-send-email-mikelley@microsoft.com>
Date:   Wed, 11 Apr 2018 10:34:35 -0700
From:   mhkelley58@...il.com
To:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
        vkuznets@...hat.com, jasowang@...hat.com,
        leann.ogasawara@...onical.com, marcelo.cerri@...onical.com,
        sthemmin@...rosoft.com, kys@...rosoft.com
Subject: [PATCH v3 char-misc 1/1] x86/hyperv: Add interrupt handler annotations

From: Michael Kelley <mikelley@...rosoft.com>

Add standard interrupt handler annotations to
hyperv_vector_handler(). This does not fix any observed
bug, but avoids potential removal of the code by link
time optimization and makes it consistent with
hv_stimer0_vector_handler in the same source file.

Suggested-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Michael Kelley <mikelley@...rosoft.com>
---
Changes in v2:
* Fixed From: line [GregKH]
Changes in v3:
* Added more explanation in commit message and the
  Suggested-by line [GregKH]
---
 arch/x86/kernel/cpu/mshyperv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 4488cf0..20f6849 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -41,7 +41,7 @@ static void (*hv_stimer0_handler)(void);
 static void (*hv_kexec_handler)(void);
 static void (*hv_crash_handler)(struct pt_regs *regs);
 
-void hyperv_vector_handler(struct pt_regs *regs)
+__visible void __irq_entry hyperv_vector_handler(struct pt_regs *regs)
 {
 	struct pt_regs *old_regs = set_irq_regs(regs);
 
-- 
2.7.4