| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 */ |