alpha/mm/fault.c

1 // SPDX-License-Identifier: GPL-2.0
48 	next_mm->context[smp_processor_id()] = mmc;  in __load_new_mm_context()
50 	pcb = &current_thread_info()->pcb;  in __load_new_mm_context()
51 	pcb->asn = mmc & HARDWARE_ASN_MASK;  in __load_new_mm_context()
52 	pcb->ptbr = ((unsigned long) next_mm->pgd - IDENT_ADDR) >> PAGE_SHIFT;  in __load_new_mm_context()
65  *	2 = fault-on-read
66  *	3 = fault-on-execute
67  *	4 = fault-on-write
70  *	-1 = instruction fetch
81 	(((unsigned long *)regs)[(r) <= 8 ? (r) : (r) <= 15 ? (r)-16 :	\
82 				 (r) <= 18 ? (r)+10 : (r)-10])
89 	struct mm_struct *mm = current->mm;  in do_page_fault()
100 		__get_user(insn, (unsigned int __user *)regs->pc);  in do_page_fault()
104 			regs->pc += 4;  in do_page_fault()
109 	/* If we're in an interrupt context, or have no user context,  in do_page_fault()
130 		if (!(vma->vm_flags & VM_EXEC))  in do_page_fault()
133 		/* Allow reads even for write-only mappings */  in do_page_fault()
134 		if (!(vma->vm_flags & (VM_READ | VM_WRITE)))  in do_page_fault()
137 		if (!(vma->vm_flags & VM_WRITE))  in do_page_fault()
170 		/* No need to mmap_read_unlock(mm) as we would  in do_page_fault()
193 	if ((fixup = search_exception_tables(regs->pc)) != 0) {  in do_page_fault()
195 		newpc = fixup_exception(dpf_reg, fixup, regs->pc);  in do_page_fault()
196 		regs->pc = newpc;  in do_page_fault()
204 	die_if_kernel("Oops", regs, cause, (unsigned long*)regs - 16);  in do_page_fault()
234 		/* Synchronize this task's top level page-table  in do_page_fault()
239 		pgd = current->active_mm->pgd + index;  in do_page_fault()