From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/x86/include/asm/edac.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 arch/x86/include/asm/edac.h (limited to 'arch/x86/include/asm/edac.h') diff --git a/arch/x86/include/asm/edac.h b/arch/x86/include/asm/edac.h new file mode 100644 index 000000000..e9b57ecc7 --- /dev/null +++ b/arch/x86/include/asm/edac.h @@ -0,0 +1,18 @@ +#ifndef _ASM_X86_EDAC_H +#define _ASM_X86_EDAC_H + +/* ECC atomic, DMA, SMP and interrupt safe scrub function */ + +static inline void 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 */ -- cgit v1.2.3-54-g00ecf