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 
edac_atomic_scrub(void * va,u32 size)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 */
20