[MIPS] MT: Improved multithreading support.

    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 10 insertions, 3 deletions

diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 2d9624fd10ec..e3a617224868 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -157,7 +157,6 @@ no_context:
          * Oops. The kernel tried to access some bad page. We'll have to
          * terminate things with extreme prejudice.
          */
-
         bust_spinlocks(1);
 
         printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
@@ -188,11 +187,20 @@ do_sigbus:
         /* Kernel mode? Handle exceptions or die */
         if (!user_mode(regs))
                 goto no_context;
-
+        else
         /*
          * Send a sigbus, regardless of whether we were in kernel
          * or user mode.
          */
+#if 0
+                printk("do_page_fault() #3: sending SIGBUS to %s for "
+                       "invalid %s\n%0*lx (epc == %0*lx, ra == %0*lx)\n",
+                       tsk->comm,
+                       write ? "write access to" : "read access from",
+                       field, address,
+                       field, (unsigned long) regs->cp0_epc,
+                       field, (unsigned long) regs->regs[31]);
+#endif
         tsk->thread.cp0_badvaddr = address;
         info.si_signo = SIGBUS;
         info.si_errno = 0;
@@ -201,7 +209,6 @@ do_sigbus:
         force_sig_info(SIGBUS, &info, tsk);
 
         return;
-
 vmalloc_fault:
         {
                 /*