linux-kernel - [PATCH] x86-64: eliminate dead code

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Message-Id: <480E1EE3.76E4.0078.0@novell.com>
Date:	Tue, 22 Apr 2008 16:22:43 +0100
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	<mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: [PATCH] x86-64: eliminate dead code

Signed-off-by: Jan Beulich <jbeulich@...ell.com>

---
 arch/x86/kernel/entry_64.S |    4 ----
 arch/x86/kernel/traps_64.c |    3 ---
 2 files changed, 7 deletions(-)

--- linux-2.6.25/arch/x86/kernel/entry_64.S	2008-04-17 04:49:44.000000000 +0200
+++ 2.6.25-x86_64-dead-code/arch/x86/kernel/entry_64.S	2008-04-15 10:49:20.000000000 +0200
@@ -1122,10 +1122,6 @@ ENTRY(coprocessor_segment_overrun)
 	zeroentry do_coprocessor_segment_overrun
 END(coprocessor_segment_overrun)
 
-ENTRY(reserved)
-	zeroentry do_reserved
-END(reserved)
-
 	/* runs on exception stack */
 ENTRY(double_fault)
 	XCPT_FRAME
--- linux-2.6.25/arch/x86/kernel/traps_64.c	2008-04-17 04:49:44.000000000 +0200
+++ 2.6.25-x86_64-dead-code/arch/x86/kernel/traps_64.c	2008-04-15 10:49:20.000000000 +0200
@@ -69,7 +69,6 @@ asmlinkage void general_protection(void)
 asmlinkage void page_fault(void);
 asmlinkage void coprocessor_error(void);
 asmlinkage void simd_coprocessor_error(void);
-asmlinkage void reserved(void);
 asmlinkage void alignment_check(void);
 asmlinkage void machine_check(void);
 asmlinkage void spurious_interrupt_bug(void);
@@ -694,12 +693,10 @@ DO_ERROR_INFO( 0, SIGFPE,  "divide error
 DO_ERROR( 4, SIGSEGV, "overflow", overflow)
 DO_ERROR( 5, SIGSEGV, "bounds", bounds)
 DO_ERROR_INFO( 6, SIGILL,  "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip)
-DO_ERROR( 7, SIGSEGV, "device not available", device_not_available)
 DO_ERROR( 9, SIGFPE,  "coprocessor segment overrun", coprocessor_segment_overrun)
 DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
 DO_ERROR(11, SIGBUS,  "segment not present", segment_not_present)
 DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0)
-DO_ERROR(18, SIGSEGV, "reserved", reserved)
 
 /* Runs on IST stack */
 asmlinkage void do_stack_segment(struct pt_regs *regs, long error_code)



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