Lines Matching +full:protect +full:- +full:exec

1 // SPDX-License-Identifier: GPL-2.0-or-later
7  *    Copyright (C) 1995-1996 Gary Thomas ([email protected])
29 #include <asm/pte-walk.h>
41 	return current->thread.regs && TRAP(current->thread.regs) == 0x400;  in is_exec_fault()
76 /* Server-style MMU handles coherency when hashing if HW exec permission
77  * is supposed per page (currently 64-bit only). If not, then, we always
78  * flush the cache for valid PTEs in set_pte. Embedded CPU without HW exec
90 		if (!test_bit(PG_dcache_clean, &folio->flags)) {  in set_pte_filter_hash()
92 			set_bit(PG_dcache_clean, &folio->flags);  in set_pte_filter_hash()
104 /* Embedded type MMU with HW exec support. This is a bit more complicated
106  * instead we "filter out" the exec permission for non clean pages.
108  * This is also called once for the folio. So only work with folio->flags here.
120 	/* No exec permission in the first place, move on */  in set_pte_filter()
130 	if (test_bit(PG_dcache_clean, &folio->flags))  in set_pte_filter()
133 	/* If it's an exec fault, we flush the cache and make it clean */  in set_pte_filter()
136 		set_bit(PG_dcache_clean, &folio->flags);  in set_pte_filter()
155 	/* So here, we only care about exec faults, as we use them  in set_access_flags_filter()
164 	/* So this is an exec fault, _PAGE_EXEC is not set. If it was  in set_access_flags_filter()
168 	if (WARN_ON(!(vma->vm_flags & VM_EXEC)))  in set_access_flags_filter()
178 	if (test_bit(PG_dcache_clean, &folio->flags))  in set_access_flags_filter()
183 	set_bit(PG_dcache_clean, &folio->flags);  in set_access_flags_filter()
196 	/* Note: mm->context.id might not yet have been assigned as  in set_ptes()
219 		if (--nr == 0)  in set_ptes()
250 		assert_pte_locked(vma->vm_mm, address);  in ptep_set_access_flags()
282 		assert_spin_locked(huge_pte_lockptr(h, vma->vm_mm, ptep));  in huge_ptep_set_access_flags()
302 /* We need the same lock to protect the PMD table and the two PTE tables. */
386 	pgd = mm->pgd + pgd_index(addr);  in assert_pte_locked()
426  * when we have MSR[EE] = 0 but the paca->irq_soft_mask = IRQS_ENABLED