linux-kernel - [PATCH v2 09/10] x86: entry, annotate interrupt symbols properly

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Date:   Mon, 20 Mar 2017 13:32:21 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     mingo@...hat.com
Cc:     tglx@...utronix.de, hpa@...or.com, x86@...nel.org,
        jpoimboe@...hat.com, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH v2 09/10] x86: entry, annotate interrupt symbols properly

* annotate local common_interrupt properly by SYM_FUNC_START_LOCAL,
  given it already has SYM_FUNC_END later
* use SYM_FUNC_INNER_LABEL for native_iret as it is in the middle of
  common_interrupt function
* use SYM_FUNC_INNER_LABEL for native_irq_return_iret instead of
  explicit .globl and label

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: <x86@...nel.org>
---
 arch/x86/entry/entry_64.S | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 3e523f8d7e7f..ee1bc5ebc88f 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -512,7 +512,7 @@ SYM_FUNC_END(irq_entries_start)
 	 * then jump to common_interrupt.
 	 */
 	.p2align CONFIG_X86_L1_CACHE_SHIFT
-common_interrupt:
+SYM_FUNC_START_LOCAL(common_interrupt)
 	ASM_CLAC
 	addq	$-0x80, (%rsp)			/* Adjust vector to [-256, -1] range */
 	interrupt do_IRQ
@@ -565,7 +565,7 @@ restore_c_regs_and_iret:
 	REMOVE_PT_GPREGS_FROM_STACK 8
 	INTERRUPT_RETURN
 
-ENTRY(native_iret)
+SYM_FUNC_INNER_LABEL(native_iret)
 	/*
 	 * Are we returning to a stack segment from the LDT?  Note: in
 	 * 64-bit mode SS:RSP on the exception stack is always valid.
@@ -575,8 +575,7 @@ ENTRY(native_iret)
 	jnz	native_irq_return_ldt
 #endif
 
-.global native_irq_return_iret
-native_irq_return_iret:
+SYM_FUNC_INNER_LABEL(native_irq_return_iret)
 	/*
 	 * This may fault.  Non-paranoid faults on return to userspace are
 	 * handled by fixup_bad_iret.  These include #SS, #GP, and #NP.
-- 
2.12.0