diff options
Diffstat (limited to 'arch/powerpc/lib/copyuser_power7_vmx.c')
| -rw-r--r-- | arch/powerpc/lib/copyuser_power7_vmx.c | 51 |
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 bf2654f2b68e..000000000000 --- 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; -} |