hexagon/mm/vm_fault.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Memory fault handling for Hexagon
5  * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
9  * Page fault handling for the Hexagon Virtual Machine.
15 #include <linux/uaccess.h>
16 #include <linux/mm.h>
17 #include <linux/sched/signal.h>
18 #include <linux/signal.h>
19 #include <linux/extable.h>
20 #include <linux/hardirq.h>
21 #include <linux/perf_event.h>
28 #define FLT_IFETCH     -1
39 	struct mm_struct *mm = current->mm;  in do_page_fault()
47 	 * If we're in an interrupt or have no user context,  in do_page_fault()
69 		if (!(vma->vm_flags & VM_EXEC))  in do_page_fault()
73 		if (!(vma->vm_flags & VM_READ))  in do_page_fault()
77 		if (!(vma->vm_flags & VM_WRITE))  in do_page_fault()
95 	/* The most common case -- we are done. */  in do_page_fault()
117 	/* User-mode address is in the memory map, but we are  in do_page_fault()
140 	/* Kernel-mode fault falls through */  in do_page_fault()
145 		pt_set_elr(regs, fixup->fixup);  in do_page_fault()