vm: add VM_FAULT_SIGSEGV handling support

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / parisc / mm / fault.c

diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index f247a3480e8e0cd7e276f4fd04004cbb608b3e11..c45130f56a93ee18a16526be5ac19c0596567931 100644 (file)
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -180,6 +180,10 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
        if (in_atomic() || !mm)
                goto no_context;
 
+       if (user_mode(regs))
+               flags |= FAULT_FLAG_USER;
+       if (acc_type & VM_WRITE)
+               flags |= FAULT_FLAG_WRITE;
 retry:
        down_read(&mm->mmap_sem);
        vma = find_vma_prev(mm, address, &prev_vma);
@@ -203,8 +207,7 @@ good_area:
         * fault.
         */
 
-       fault = handle_mm_fault(mm, vma, address,
-                       flags | ((acc_type & VM_WRITE) ? FAULT_FLAG_WRITE : 0));
+       fault = handle_mm_fault(mm, vma, address, flags);
 
        if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
                return;
@@ -217,6 +220,8 @@ good_area:
                 */
                if (fault & VM_FAULT_OOM)
                        goto out_of_memory;
+               else if (fault & VM_FAULT_SIGSEGV)
+                       goto bad_area;
                else if (fault & VM_FAULT_SIGBUS)
                        goto bad_area;
                BUG();