cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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xor_vmx_glue.c (1633B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Altivec XOR operations
      4 *
      5 * Copyright 2017 IBM Corp.
      6 */
      7
      8#include <linux/preempt.h>
      9#include <linux/export.h>
     10#include <linux/sched.h>
     11#include <asm/switch_to.h>
     12#include <asm/xor_altivec.h>
     13#include "xor_vmx.h"
     14
     15void xor_altivec_2(unsigned long bytes, unsigned long * __restrict p1,
     16		   const unsigned long * __restrict p2)
     17{
     18	preempt_disable();
     19	enable_kernel_altivec();
     20	__xor_altivec_2(bytes, p1, p2);
     21	disable_kernel_altivec();
     22	preempt_enable();
     23}
     24EXPORT_SYMBOL(xor_altivec_2);
     25
     26void xor_altivec_3(unsigned long bytes, unsigned long * __restrict p1,
     27		   const unsigned long * __restrict p2,
     28		   const unsigned long * __restrict p3)
     29{
     30	preempt_disable();
     31	enable_kernel_altivec();
     32	__xor_altivec_3(bytes, p1, p2, p3);
     33	disable_kernel_altivec();
     34	preempt_enable();
     35}
     36EXPORT_SYMBOL(xor_altivec_3);
     37
     38void xor_altivec_4(unsigned long bytes, unsigned long * __restrict p1,
     39		   const unsigned long * __restrict p2,
     40		   const unsigned long * __restrict p3,
     41		   const unsigned long * __restrict p4)
     42{
     43	preempt_disable();
     44	enable_kernel_altivec();
     45	__xor_altivec_4(bytes, p1, p2, p3, p4);
     46	disable_kernel_altivec();
     47	preempt_enable();
     48}
     49EXPORT_SYMBOL(xor_altivec_4);
     50
     51void xor_altivec_5(unsigned long bytes, unsigned long * __restrict p1,
     52		   const unsigned long * __restrict p2,
     53		   const unsigned long * __restrict p3,
     54		   const unsigned long * __restrict p4,
     55		   const unsigned long * __restrict p5)
     56{
     57	preempt_disable();
     58	enable_kernel_altivec();
     59	__xor_altivec_5(bytes, p1, p2, p3, p4, p5);
     60	disable_kernel_altivec();
     61	preempt_enable();
     62}
     63EXPORT_SYMBOL(xor_altivec_5);