linux-kernel - [tip:x86/pti] x86/entry/64: Remove 'interrupt' macro

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Date:   Wed, 21 Feb 2018 09:00:12 -0800
From:   tip-bot for Dominik Brodowski <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, hpa@...or.com, tglx@...utronix.de, bp@...en8.de,
        peterz@...radead.org, dwmw2@...radead.org, jpoimboe@...hat.com,
        luto@...nel.org, linux@...inikbrodowski.net,
        torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        dvlasenk@...hat.com, brgerst@...il.com
Subject: [tip:x86/pti] x86/entry/64: Remove 'interrupt' macro

Commit-ID:  3aa99fc3e708b9cd9b4cfe2df0b7a66cf293e3cf
Gitweb:     https://git.kernel.org/tip/3aa99fc3e708b9cd9b4cfe2df0b7a66cf293e3cf
Author:     Dominik Brodowski <linux@...inikbrodowski.net>
AuthorDate: Tue, 20 Feb 2018 22:01:11 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 21 Feb 2018 16:54:04 +0100

x86/entry/64: Remove 'interrupt' macro

It is now trivial to call interrupt_entry() and then the actual worker.
Therefore, remove the interrupt macro and open code it all.

Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>
Acked-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: David Woodhouse <dwmw2@...radead.org>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: dan.j.williams@...el.com
Link: http://lkml.kernel.org/r/20180220210113.6725-5-linux@dominikbrodowski.net
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/entry/entry_64.S | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index b45d766..8ea03cf 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -608,14 +608,6 @@ ENTRY(interrupt_entry)
 	ret
 END(interrupt_entry)
 
-/* 0(%rsp): ~(interrupt number) */
-	.macro interrupt func
-	call	interrupt_entry
-
-	UNWIND_HINT_REGS indirect=1
-	call	\func	/* rdi points to pt_regs */
-	.endm
-
 	/*
 	 * The interrupt stubs push (~vector+0x80) onto the stack and
 	 * then jump to common_interrupt.
@@ -624,7 +616,9 @@ END(interrupt_entry)
 common_interrupt:
 	ASM_CLAC
 	addq	$-0x80, (%rsp)			/* Adjust vector to [-256, -1] range */
-	interrupt do_IRQ
+	call	interrupt_entry
+	UNWIND_HINT_REGS indirect=1
+	call	do_IRQ	/* rdi points to pt_regs */
 	/* 0(%rsp): old RSP */
 ret_from_intr:
 	DISABLE_INTERRUPTS(CLBR_ANY)
@@ -820,7 +814,9 @@ ENTRY(\sym)
 	ASM_CLAC
 	pushq	$~(\num)
 .Lcommon_\sym:
-	interrupt \do_sym
+	call	interrupt_entry
+	UNWIND_HINT_REGS indirect=1
+	call	\do_sym	/* rdi points to pt_regs */
 	jmp	ret_from_intr
 END(\sym)
 .endm