vm: add VM_FAULT_SIGSEGV handling support

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / ia64 / mm / fault.c

diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
index 6cf0341f978e59ddf235c44e70dcf615799390ed..ba5ba7accd0d6bb4dbab34f7fc307c4306347f4a 100644 (file)
--- a/arch/ia64/mm/fault.c
+++ b/arch/ia64/mm/fault.c
@@ -90,8 +90,6 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
        mask = ((((isr >> IA64_ISR_X_BIT) & 1UL) << VM_EXEC_BIT)
                | (((isr >> IA64_ISR_W_BIT) & 1UL) << VM_WRITE_BIT));
 
-       flags |= ((mask & VM_WRITE) ? FAULT_FLAG_WRITE : 0);
-
        /* mmap_sem is performance critical.... */
        prefetchw(&mm->mmap_sem);
 
@@ -119,6 +117,10 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
        if (notify_page_fault(regs, TRAP_BRKPT))
                return;
 
+       if (user_mode(regs))
+               flags |= FAULT_FLAG_USER;
+       if (mask & VM_WRITE)
+               flags |= FAULT_FLAG_WRITE;
 retry:
        down_read(&mm->mmap_sem);
 
@@ -170,6 +172,8 @@ retry:
                 */
                if (fault & VM_FAULT_OOM) {
                        goto out_of_memory;
+               } else if (fault & VM_FAULT_SIGSEGV) {
+                       goto bad_area;
                } else if (fault & VM_FAULT_SIGBUS) {
                        signal = SIGBUS;
                        goto bad_area;