From c6dbd3e5e69cf3ca47a3864115d4cbdd44619243 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 15 Nov 2021 17:46:39 +0100 Subject: x86/mmx_32: Remove X86_USE_3DNOW This code puts an exception table entry on the PREFETCH instruction to overwrite it with a JMP.d8 when it triggers an exception. Except of course, our code is no longer writable, also SMP. Instead of fixing this broken mess, simply take it out. Signed-off-by: Peter Zijlstra (Intel) Acked-by: Borislav Petkov Link: https://lkml.kernel.org/r/YZKQzUmeNuwyvZpk@hirez.programming.kicks-ass.net --- tools/arch/x86/include/asm/required-features.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'tools/arch') diff --git a/tools/arch/x86/include/asm/required-features.h b/tools/arch/x86/include/asm/required-features.h index b2d504f11937..aff774775c67 100644 --- a/tools/arch/x86/include/asm/required-features.h +++ b/tools/arch/x86/include/asm/required-features.h @@ -35,11 +35,7 @@ # define NEED_CMOV 0 #endif -#ifdef CONFIG_X86_USE_3DNOW -# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31)) -#else # define NEED_3DNOW 0 -#endif #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) # define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) -- cgit v1.2.3