Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (141 commits)
  MIPS: Alchemy: defconfig updates
  MIPS: Alchemy: Fix Au1100 ethernet build failure
  MIPS: Alchemy: Repair db1500/bosporus builds
  MIPS: ARC: Cleanup unused definitions from sgialib.h
  MIPS: Cobalt: convert legacy port addresses to GT-64111 bus addresses
  MIPS: Alchemy: use 36bit addresses for PCMCIA resources.
  MIPS: Cobalt: Fix theoretical port aliasing issue
  MIPS: Use ALIGN(x, bytes) instead of __ALIGN_MASK(x, bytes - 1)
  MIPS: Crazy spinlock speed test.
  MIPS: Optimize spinlocks.
  MIPS: Alchemy: devboard PM needs to save CPLD registers.
  MIPS: PowerTV: Eliminate duplicate opcode definition macros
  MIPS: Lemote 2F: Move printks out of port_access_lock.
  MIPS: PNX833x: Convert IRQ controller locks to raw spinlocks.
  MIPS: Octeon: Replace spinlock with raw_spinlocks in dma-octeon.c.
  MIPS: Octeon: Replace rwlocks in irq_chip handlers with raw_spinlocks.
  MIPS: Octeon: Convert octeon_irq_msi_lock to raw spinlock.
  MIPS: Loongson: Remove pointless sample_lock from oprofile code.
  MIPS: SNI: Convert sni_rm200_i8259A_lock to raw spinlock.
  MIPS: i8259: Convert IRQ controller lock to raw spinlock.
  ...

1 files changed, 25 insertions, 2 deletions

diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index e97a7a2fb2c0..b78f7d913ca4 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -99,8 +99,31 @@ good_area:
                 if (!(vma->vm_flags & VM_WRITE))
                         goto bad_area;
         } else {
-                if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
-                        goto bad_area;
+                if (kernel_uses_smartmips_rixi) {
+                        if (address == regs->cp0_epc && !(vma->vm_flags & VM_EXEC)) {
+#if 0
+                                pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] XI violation\n",
+                                          raw_smp_processor_id(),
+                                          current->comm, current->pid,
+                                          field, address, write,
+                                          field, regs->cp0_epc);
+#endif
+                                goto bad_area;
+                        }
+                        if (!(vma->vm_flags & VM_READ)) {
+#if 0
+                                pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] RI violation\n",
+                                          raw_smp_processor_id(),
+                                          current->comm, current->pid,
+                                          field, address, write,
+                                          field, regs->cp0_epc);
+#endif
+                                goto bad_area;
+                        }
+                } else {
+                        if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
+                                goto bad_area;
+                }
         }
 
         /*