diff --git a/arch/tile/include/arch/abi.h b/arch/tile/include/arch/abi.h
index da8df5b9d914a7936d261f63d4aa6cde97ffc628..8affc76f771a57af311215ff595b63132798a32b 100644
--- a/arch/tile/include/arch/abi.h
+++ b/arch/tile/include/arch/abi.h
@@ -59,9 +59,7 @@
  * The ABI requires callers to allocate a caller state save area of
  * this many bytes at the bottom of each stack frame.
  */
-#ifdef __tile__
-#define C_ABI_SAVE_AREA_SIZE (2 * __SIZEOF_POINTER__)
-#endif
+#define C_ABI_SAVE_AREA_SIZE (2 * (CHIP_WORD_SIZE() / 8))
 
 /**
  * The operand to an 'info' opcode directing the backtracer to not
diff --git a/arch/tile/include/asm/siginfo.h b/arch/tile/include/asm/siginfo.h
index 0c12d1b9ddf2d30772aad1644e630282bab6e2da..56d661bb010bc77d36a4e18cdc60799ff9c52744 100644
--- a/arch/tile/include/asm/siginfo.h
+++ b/arch/tile/include/asm/siginfo.h
@@ -17,6 +17,10 @@
 
 #define __ARCH_SI_TRAPNO
 
+#ifdef __LP64__
+# define __ARCH_SI_PREAMBLE_SIZE	(4 * sizeof(int))
+#endif
+
 #include <asm-generic/siginfo.h>
 
 /*
diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
index d5efb215dd5f3ad9b7a8f03d8f8f7d8bfc97d97c..9c710db43f1329c8b850f4a058e295df171c314e 100644
--- a/arch/tile/kernel/compat_signal.c
+++ b/arch/tile/kernel/compat_signal.c
@@ -56,13 +56,15 @@ struct compat_ucontext {
 	sigset_t	  uc_sigmask;	/* mask last for extensibility */
 };
 
+#define COMPAT_SI_PAD_SIZE	((SI_MAX_SIZE - 3 * sizeof(int)) / sizeof(int))
+
 struct compat_siginfo {
 	int si_signo;
 	int si_errno;
 	int si_code;
 
 	union {
-		int _pad[SI_PAD_SIZE];
+		int _pad[COMPAT_SI_PAD_SIZE];
 
 		/* kill() */
 		struct {