[linux-2.6-block.git] / arch / x86 / include / asm / edac.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_EDAC_H
#define _ASM_X86_EDAC_H

/* ECC atomic, DMA, SMP and interrupt safe scrub function */

static inline void edac_atomic_scrub(void *va, u32 size)
{
	u32 i, *virt_addr = va;

	/*
	 * Very carefully read and write to memory atomically so we
	 * are interrupt, DMA and SMP safe.
	 */
	for (i = 0; i < size / 4; i++, virt_addr++)
		asm volatile("lock; addl $0, %0"::"m" (*virt_addr));
}

#endif /* _ASM_X86_EDAC_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1965aae3 PA	2	#ifndef _ASM_X86_EDAC_H
1965aae3 PA	3	#define _ASM_X86_EDAC_H
1f7afb08 TG	4
	5	/* ECC atomic, DMA, SMP and interrupt safe scrub function */
	6
b01aec9b	7	static inline void edac_atomic_scrub(void *va, u32 size)
1f7afb08 TG	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++)
451dd983	16	asm volatile("lock; addl $0, %0"::"m" (*virt_addr));
1f7afb08 TG	17	}
1f7afb08 TG	18
1965aae3	19	#endif /* _ASM_X86_EDAC_H */