Merge branch 'uprobes/core' of git://git.kernel.org/pub/scm/linux/ker…

…nel/git/oleg/misc into perf/uprobes

Pull uprobes updates from Oleg Nesterov:

  "This hopefully completes the previous 'fix the handling of relative
   jmp/call's' series, all changes except the last 3 unrelated fixes try
   to address TODO's mentioned in the changelogs."

Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/include/asm/uprobes.h

@@ -41,18 +41,21 @@ struct arch_uprobe {
 		u8			ixol[MAX_UINSN_BYTES];
 	};
 
-	u16				fixups;
 	const struct uprobe_xol_ops	*ops;
 
 	union {
-#ifdef CONFIG_X86_64
-		unsigned long			rip_rela_target_address;
-#endif
 		struct {
 			s32	offs;
 			u8	ilen;
 			u8	opc1;
-		}				branch;
+		}			branch;
+		struct {
+#ifdef CONFIG_X86_64
+			long	riprel_target;
+#endif
+			u8	fixups;
+			u8	ilen;
+		} 			def;
 	};
 };
 

arch/x86/kernel/process_64.c

@@ -413,19 +413,20 @@ void set_personality_ia32(bool x32)
 	set_thread_flag(TIF_ADDR32);
 
 	/* Mark the associated mm as containing 32-bit tasks. */
-	if (current->mm)
-		current->mm->context.ia32_compat = 1;
-
 	if (x32) {
 		clear_thread_flag(TIF_IA32);
 		set_thread_flag(TIF_X32);
+		if (current->mm)
+			current->mm->context.ia32_compat = TIF_X32;
 		current->personality &= ~READ_IMPLIES_EXEC;
 		/* is_compat_task() uses the presence of the x32
 		   syscall bit flag to determine compat status */
 		current_thread_info()->status &= ~TS_COMPAT;
 	} else {
 		set_thread_flag(TIF_IA32);
 		clear_thread_flag(TIF_X32);
+		if (current->mm)
+			current->mm->context.ia32_compat = TIF_IA32;
 		current->personality |= force_personality32;
 		/* Prepare the first "return" to user space */
 		current_thread_info()->status |= TS_COMPAT;