From 97ac46a5087eaf87fd76ff7bb31ec9c896010442 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Sun, 7 Jun 2015 11:37:06 -0700 Subject: x86/mpx: Allow 32-bit binaries on 64-bit kernels again Now that the bugs in mixed mode MPX handling are fixed, re-allow 32-bit binaries on 64-bit kernels again. Signed-off-by: Dave Hansen Reviewed-by: Thomas Gleixner Cc: Andrew Morton Cc: Dave Hansen Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20150607183706.70277DAD@viggo.jf.intel.com Signed-off-by: Ingo Molnar --- arch/x86/mm/mpx.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'arch/x86/mm/mpx.c') diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index 6233d5195f01..7a657f58bbea 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -366,12 +366,6 @@ static __user void *mpx_get_bounds_dir(void) if (!cpu_feature_enabled(X86_FEATURE_MPX)) return MPX_INVALID_BOUNDS_DIR; - /* - * 32-bit binaries on 64-bit kernels are currently - * unsupported. - */ - if (IS_ENABLED(CONFIG_X86_64) && test_thread_flag(TIF_IA32)) - return MPX_INVALID_BOUNDS_DIR; /* * The bounds directory pointer is stored in a register * only accessible if we first do an xsave. -- cgit 1.4.1