Commit 8328a8ba authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: nommu: Kill off dummy page fault ops for SH-3/4. 



We stopped referencing these functions unconditionally when the
old entry.S code was refactored, so this is just dead code at
present. Kill it off.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent d10040f7

arch/sh/mm/Makefile

+0 −2
Original line number Diff line number Diff line
@@ -12,8 +12,6 @@ obj-$(CONFIG_SH7705_CACHE_32KB) += cache-sh7705.o 
endif



mmu-y			:= tlb-nommu.o pg-nommu.o

mmu-$(CONFIG_CPU_SH3)	+= fault-nommu.o

mmu-$(CONFIG_CPU_SH4)	+= fault-nommu.o

mmu-$(CONFIG_MMU)	:= fault.o clear_page.o copy_page.o tlb-flush.o	\

			   ioremap.o

arch/sh/mm/fault-nommu.c

deleted100644 → 0
+0 −65
Original line number Diff line number Diff line 
/*

 * arch/sh/mm/fault-nommu.c

 *

 * Copyright (C) 2002 - 2007 Paul Mundt

 *

 * Based on linux/arch/sh/mm/fault.c:

 *  Copyright (C) 1999  Niibe Yutaka

 *

 * Released under the terms of the GNU GPL v2.0.

 */

#include <linux/kernel.h>

#include <linux/mm.h>

#include <linux/hardirq.h>

#include <linux/kprobes.h>

#include <linux/signal.h>

#include <asm/system.h>

#include <asm/ptrace.h>

#include <asm/kgdb.h>



/*

 * This routine handles page faults.  It determines the address,

 * and the problem, and then passes it off to one of the appropriate

 * routines.

 */

asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,

					unsigned long writeaccess,

					unsigned long address)

{

	trace_hardirqs_on();

	local_irq_enable();



#if defined(CONFIG_SH_KGDB)

	if (kgdb_nofault && kgdb_bus_err_hook)

		kgdb_bus_err_hook();

#endif



	/*

	 * Oops. The kernel tried to access some bad page. We'll have to

	 * terminate things with extreme prejudice.

	 *

	 */

	if (address < PAGE_SIZE) {

		printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");

	} else {

		printk(KERN_ALERT "Unable to handle kernel paging request");

	}



	printk(" at virtual address %08lx\n", address);

	printk(KERN_ALERT "pc = %08lx\n", regs->pc);



	die("Oops", regs, writeaccess);

	do_exit(SIGKILL);

}



asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,

					 unsigned long writeaccess,

					 unsigned long address)

{

#if defined(CONFIG_SH_KGDB)

	if (kgdb_nofault && kgdb_bus_err_hook)

		kgdb_bus_err_hook();

#endif



	return (address >= TASK_SIZE);

}