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
   7 static 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 */