arch: mm: pass userspace fault flag to generic fault handler

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / score / mm / fault.c

diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c
index 4b71a62..5223898 100644 (file)
--- a/arch/score/mm/fault.c
+++ b/arch/score/mm/fault.c
@@ -47,6 +47,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
        struct task_struct *tsk = current;
        struct mm_struct *mm = tsk->mm;
        const int field = sizeof(unsigned long) * 2;
+       unsigned long flags = 0;
        siginfo_t info;
        int fault;
 
@@ -75,6 +76,9 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
        if (in_atomic() || !mm)
                goto bad_area_nosemaphore;
 
+       if (user_mode(regs))
+               flags |= FAULT_FLAG_USER;
+
        down_read(&mm->mmap_sem);
        vma = find_vma(mm, address);
        if (!vma)
@@ -95,6 +99,7 @@ good_area:
        if (write) {
                if (!(vma->vm_flags & VM_WRITE))
                        goto bad_area;
+               flags |= FAULT_FLAG_WRITE;
        } else {
                if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
                        goto bad_area;
@@ -105,7 +110,7 @@ good_area:
        * make sure we exit gracefully rather than endlessly redo
        * the fault.
        */
-       fault = handle_mm_fault(mm, vma, address, write);
+       fault = handle_mm_fault(mm, vma, address, flags);
        if (unlikely(fault & VM_FAULT_ERROR)) {
                if (fault & VM_FAULT_OOM)
                        goto out_of_memory;