From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/x86/include/asm/barrier.h | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/kernel/arch/x86/include/asm/barrier.h b/kernel/arch/x86/include/asm/barrier.h
index dd22cff..4819d5e 100644
--- a/kernel/arch/x86/include/asm/barrier.h
+++ b/kernel/arch/x86/include/asm/barrier.h
@@ -49,8 +49,7 @@
#define array_index_mask_nospec array_index_mask_nospec
/* Prevent speculative execution past this barrier. */
-#define barrier_nospec() alternative_2("", "mfence", X86_FEATURE_MFENCE_RDTSC, \
- "lfence", X86_FEATURE_LFENCE_RDTSC)
+#define barrier_nospec() alternative("", "lfence", X86_FEATURE_LFENCE_RDTSC)
#define dma_rmb() barrier()
#define dma_wmb() barrier()
--
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