LXR linux/arch/x86/include/asm/edac.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_X86_EDAC_H
   3#define _ASM_X86_EDAC_H
   4
   5/* ECC atomic, DMA, SMP and interrupt safe scrub function */
   6
   7static inline void edac_atomic_scrub(void *va, u32 size)
   8{
   9        u32 i, *virt_addr = va;
  10
  11        /*
  12         * Very carefully read and write to memory atomically so we
  13         * are interrupt, DMA and SMP safe.
  14         */
  15        for (i = 0; i < size / 4; i++, virt_addr++)
  16                asm volatile("lock; addl $0, %0"::"m" (*virt_addr));
  17}
  18
  19#endif /* _ASM_X86_EDAC_H */
  20