tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_EDAC_H
2#define _ASM_X86_EDAC_H
3
4/* ECC atomic, DMA, SMP and interrupt safe scrub function */
5
6static __inline__ void atomic_scrub(void *va, u32 size)
7{
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++)
15 __asm__ __volatile__("lock; addl $0, %0"::"m"(*virt_addr));
16}
17
18#endif