[PATCH] x86_64: Implement is_compat_task the right way

By setting a flag during a 32bit system call only

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/asm-offsets.c b/arch/x86_64/kernel/asm-offsets.c
index 00a08d13230a..cfb4f9cebea4 100644
--- a/arch/x86_64/kernel/asm-offsets.c
+++ b/arch/x86_64/kernel/asm-offsets.c
@@ -33,6 +33,7 @@ int main(void)
         ENTRY(flags);
         ENTRY(addr_limit);
         ENTRY(preempt_count);
+        ENTRY(status);
         BLANK();
 #undef ENTRY
 #define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 45e0ab8a1fca..300555bc56b3 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -313,6 +313,7 @@ int_with_check:
         movl threadinfo_flags(%rcx),%edx
         andl %edi,%edx
         jnz   int_careful
+        andl    $~TS_COMPAT,threadinfo_status(%rcx)
         jmp   retint_swapgs
 
         /* Either reschedule or signal or syscall exit tracking needed. */