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H. Peter Anvin1965aae2008-10-22 22:26:29 -07001#ifndef _ASM_X86_EDAC_H
2#define _ASM_X86_EDAC_H
Thomas Gleixner1f7afb02007-10-15 23:28:20 +02003
4/* ECC atomic, DMA, SMP and interrupt safe scrub function */
5
Joe Perches451dd982008-03-23 01:02:06 -07006static inline void atomic_scrub(void *va, u32 size)
Thomas Gleixner1f7afb02007-10-15 23:28:20 +02007{
8 u32 i, *virt_addr = va;
9
10 /*
11 * Very carefully read and write to memory atomically so we
12 * are interrupt, DMA and SMP safe.
13 */
14 for (i = 0; i < size / 4; i++, virt_addr++)
Joe Perches451dd982008-03-23 01:02:06 -070015 asm volatile("lock; addl $0, %0"::"m" (*virt_addr));
Thomas Gleixner1f7afb02007-10-15 23:28:20 +020016}
17
H. Peter Anvin1965aae2008-10-22 22:26:29 -070018#endif /* _ASM_X86_EDAC_H */