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authorAndy Lutomirski <luto@kernel.org>2016-03-22 14:25:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-22 15:36:02 -0700
commitf970165beeaa4803438e435d68022b3680a1a0b0 (patch)
treee8655e510222813198b423f60212838873329fdc /arch
parent7365abbade07f9181cbd013669642f129e9ec635 (diff)
x86/compat: remove is_compat_task()
x86's is_compat_task always checked the current syscall type, not the task type. It has no non-arch users any more, so just remove it to avoid confusion. On x86, nothing should really be checking the task ABI. There are legitimate users for the syscall ABI and for the mm ABI. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/compat.h3
-rw-r--r--arch/x86/include/asm/ftrace.h2
-rw-r--r--arch/x86/kernel/process_64.c2
3 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index acdee09228b3..ebb102e1bbc7 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -316,9 +316,10 @@ static inline bool is_x32_task(void)
return false;
}
-static inline bool is_compat_task(void)
+static inline bool in_compat_syscall(void)
{
return is_ia32_task() || is_x32_task();
}
+#define in_compat_syscall in_compat_syscall /* override the generic impl */
#endif /* _ASM_X86_COMPAT_H */
diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
index 24938852db30..21b66dbf3601 100644
--- a/arch/x86/include/asm/ftrace.h
+++ b/arch/x86/include/asm/ftrace.h
@@ -58,7 +58,7 @@ int ftrace_int3_handler(struct pt_regs *regs);
#define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS 1
static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
{
- if (is_compat_task())
+ if (in_compat_syscall())
return true;
return false;
}
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 776229e98202..dfa2781610e8 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -478,7 +478,7 @@ void set_personality_ia32(bool 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
+ /* in_compat_syscall() uses the presence of the x32
syscall bit flag to determine compat status */
current_thread_info()->status &= ~TS_COMPAT;
} else {

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