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Diffstat (limited to 'arch/frv/mm/fault.c')
-rw-r--r--arch/frv/mm/fault.c42
1 files changed, 22 insertions, 20 deletions
diff --git a/arch/frv/mm/fault.c b/arch/frv/mm/fault.c
index 8b3eb50c510..9a66372fc7c 100644
--- a/arch/frv/mm/fault.c
+++ b/arch/frv/mm/fault.c
@@ -20,7 +20,6 @@
#include <linux/ptrace.h>
#include <linux/hardirq.h>
-#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
#include <asm/gdb-stub.h>
@@ -35,11 +34,12 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
struct vm_area_struct *vma;
struct mm_struct *mm;
unsigned long _pme, lrai, lrad, fixup;
+ unsigned long flags = 0;
siginfo_t info;
pgd_t *pge;
pud_t *pue;
pte_t *pte;
- int write;
+ int fault;
#if 0
const char *atxc[16] = {
@@ -78,9 +78,12 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
- if (in_interrupt() || !mm)
+ if (in_atomic() || !mm)
goto no_context;
+ if (user_mode(__frame))
+ flags |= FAULT_FLAG_USER;
+
down_read(&mm->mmap_sem);
vma = find_vma(mm, ear0);
@@ -129,7 +132,6 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
*/
good_area:
info.si_code = SEGV_ACCERR;
- write = 0;
switch (esr0 & ESR0_ATXC) {
default:
/* handle write to write protected page */
@@ -140,7 +142,7 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
#endif
if (!(vma->vm_flags & VM_WRITE))
goto bad_area;
- write = 1;
+ flags |= FAULT_FLAG_WRITE;
break;
/* handle read from protected page */
@@ -162,18 +164,18 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- switch (handle_mm_fault(mm, vma, ear0, write)) {
- case VM_FAULT_MINOR:
- current->min_flt++;
- break;
- case VM_FAULT_MAJOR:
- current->maj_flt++;
- break;
- case VM_FAULT_SIGBUS:
- goto do_sigbus;
- default:
- goto out_of_memory;
+ fault = handle_mm_fault(mm, vma, ear0, flags);
+ if (unlikely(fault & VM_FAULT_ERROR)) {
+ if (fault & VM_FAULT_OOM)
+ goto out_of_memory;
+ else if (fault & VM_FAULT_SIGBUS)
+ goto do_sigbus;
+ BUG();
}
+ if (fault & VM_FAULT_MAJOR)
+ current->maj_flt++;
+ else
+ current->min_flt++;
up_read(&mm->mmap_sem);
return;
@@ -256,10 +258,10 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
*/
out_of_memory:
up_read(&mm->mmap_sem);
- printk("VM: killing process %s\n", current->comm);
- if (user_mode(__frame))
- do_exit(SIGKILL);
- goto no_context;
+ if (!user_mode(__frame))
+ goto no_context;
+ pagefault_out_of_memory();
+ return;
do_sigbus:
up_read(&mm->mmap_sem);