5 files changed, 14 insertions, 3 deletions

diff --git a/sys/alpha/include/signal.h b/sys/alpha/include/signal.h
index 2e018642ff9a..02a4bfd2e56c 100644
--- a/sys/alpha/include/signal.h
+++ b/sys/alpha/include/signal.h
@@ -36,6 +36,12 @@ typedef long	sig_atomic_t;
 #ifndef _ANSI_SOURCE
 
 /*
+ * Minimum signal stack size. The current signal frame
+ * for Alpha is 808 bytes large.
+ */
+#define	MINSIGSTKSZ	(1024 * 4)
+
+/*
  * Information pushed on stack when a signal is delivered.
  * This is used by the kernel to restore state following
  * execution of the signal handler.  It is also made available
diff --git a/sys/alpha/linux/linux.h b/sys/alpha/linux/linux.h
index c441cc27db1b..507289b3f3b2 100644
--- a/sys/alpha/linux/linux.h
+++ b/sys/alpha/linux/linux.h
@@ -159,6 +159,8 @@ struct linux_new_utsname {
 #define	LINUX_SIGISMEMBER(set, sig)	SIGISMEMBER(set, sig)
 #define	LINUX_SIGADDSET(set, sig)	SIGADDSET(set, sig)
 
+#define	LINUX_MINSIGSTKSZ	4096
+
 typedef void	(*linux_handler_t)(int);
 typedef u_long	linux_osigset_t;
 
diff --git a/sys/alpha/linux/linux_sysvec.c b/sys/alpha/linux/linux_sysvec.c
index 50ec18f56a12..8b4e13c4b7af 100644
--- a/sys/alpha/linux/linux_sysvec.c
+++ b/sys/alpha/linux/linux_sysvec.c
@@ -186,7 +186,8 @@ struct sysentvec elf_linux_sysvec = {
 	0,
 	"Linux ELF",
 	elf_coredump,
-	exec_linux_imgact_try
+	exec_linux_imgact_try,
+	LINUX_MINSIGSTKSZ
 };
 
 static Elf64_Brandinfo linux_brand = {
diff --git a/sys/alpha/osf1/osf1.h b/sys/alpha/osf1/osf1.h
index 7628bf004e1f..bc91295e2329 100644
--- a/sys/alpha/osf1/osf1.h
+++ b/sys/alpha/osf1/osf1.h
@@ -31,6 +31,7 @@ extern struct sysent osf1_sysent[];
 extern int bsd_to_osf1_sig[];
 extern int bsd_to_osf1_errno[];
 
+#define	OSF1_MINSIGSTKSZ	4096
 
 /* osf/1 ioctls */
 #define	OSF1_IOCPARM_MASK	0x1fff	/* parameter length, at most 13 bits */
diff --git a/sys/alpha/osf1/osf1_sysvec.c b/sys/alpha/osf1/osf1_sysvec.c
index 45e91252ebbd..b89375a133d3 100644
--- a/sys/alpha/osf1/osf1_sysvec.c
+++ b/sys/alpha/osf1/osf1_sysvec.c
@@ -74,8 +74,9 @@ struct sysentvec osf1_sysvec = {
         &osf1_szsigcode,	/* use generic trampoline size */
         0,			/* prepsyscall */
 	"OSF/1 ECOFF",
-	NULL			/* we don't have an ECOFF coredump function */
-	
+	NULL,			/* we don't have an ECOFF coredump function */
+	NULL,
+	OSF1_MINSIGSTKSZ
 };
 
 /*