aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/lib/copyuser_power7_vmx.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/lib/copyuser_power7_vmx.c')
-rw-r--r--arch/powerpc/lib/copyuser_power7_vmx.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/arch/powerpc/lib/copyuser_power7_vmx.c b/arch/powerpc/lib/copyuser_power7_vmx.c
deleted file mode 100644
index bf2654f2b68..00000000000
--- a/arch/powerpc/lib/copyuser_power7_vmx.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) IBM Corporation, 2011
- *
- * Authors: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
- * Anton Blanchard <anton@au.ibm.com>
- */
-#include <linux/uaccess.h>
-#include <linux/hardirq.h>
-#include <asm/switch_to.h>
-
-int enter_vmx_copy(void)
-{
- if (in_interrupt())
- return 0;
-
- /* This acts as preempt_disable() as well and will make
- * enable_kernel_altivec(). We need to disable page faults
- * as they can call schedule and thus make us lose the VMX
- * context. So on page faults, we just fail which will cause
- * a fallback to the normal non-vmx copy.
- */
- pagefault_disable();
-
- enable_kernel_altivec();
-
- return 1;
-}
-
-/*
- * This function must return 0 because we tail call optimise when calling
- * from __copy_tofrom_user_power7 which returns 0 on success.
- */
-int exit_vmx_copy(void)
-{
- pagefault_enable();
- return 0;
-}