diff -urN wt3-ctx9/arch/i386/kernel/entry.S wt3-ctx9-fixed/arch/i386/kernel/entry.S
--- wt3-ctx9/arch/i386/kernel/entry.S	Thu Mar 28 21:35:46 2002
+++ wt3-ctx9-fixed/arch/i386/kernel/entry.S	Thu Mar 28 22:11:59 2002
@@ -687,6 +687,8 @@
	.long SYMBOL_NAME(sys_ni_syscall)	/* 240 reserved for futex */
	.long SYMBOL_NAME(sys_ni_syscall)	/* reserved for sched_setaffinity */
	.long SYMBOL_NAME(sys_ni_syscall)	/* reserved for sched_getaffinity */
+	.long SYMBOL_NAME(sys_new_s_context)	/* for vservers */
+	.long SYMBOL_NAME(sys_set_ipv4root)	/* for vservers */
 
 	.rept NR_syscalls-(.-sys_call_table)/4
 		.long SYMBOL_NAME(sys_ni_syscall)
diff -urN wt3-ctx9/include/asm-i386/unistd.h wt3-ctx9-fixed/include/asm-i386/unistd.h
--- wt3-ctx9/include/asm-i386/unistd.h	Thu Mar 28 21:35:46 2002
+++ wt3-ctx9-fixed/include/asm-i386/unistd.h	Thu Mar 28 22:21:37 2002
@@ -247,6 +247,9 @@
 #define __NR_futex		240
 #define __NR_sched_setaffinity	241
 #define __NR_sched_getaffinity	242
+#define __NR_new_s_context	243
+#define __NR_set_ipv4root	244
+
 
 /* user-visible error numbers are in the range -1 - -124: see <asm-i386/errno.h> */
 
diff -urN wt3-ctx9/kernel/signal.c wt3-ctx9-fixed/kernel/signal.c
--- wt3-ctx9/kernel/signal.c	Thu Mar 28 21:35:46 2002
+++ wt3-ctx9-fixed/kernel/signal.c	Thu Mar 28 22:20:06 2002
@@ -621,7 +621,9 @@
 		retval = -ESRCH;
 		read_lock(&tasklist_lock);
 		for_each_task(p) {
-			if (p->pgrp == pgrp && thread_group_leader(p)) {
+			if (p->pgrp == pgrp && thread_group_leader(p)
+			    && ((long)info==1
+			        || p->s_context == current->s_context)) {
 				int err = send_sig_info(sig, info, p);
 				if (retval)
 					retval = err;
@@ -668,14 +670,29 @@
 	read_lock(&tasklist_lock);
 	p = find_task_by_pid(pid);
 	error = -ESRCH;
-	if (p) {
+	if (p != NULL) {
 		if (!thread_group_leader(p)) {
                        struct task_struct *tg;
                        tg = find_task_by_pid(p->tgid);
                        if (tg)
                                p = tg;
                 }
-		error = send_sig_info(sig, info, p);
+		switch ((unsigned long)info) {
+		case 0:
+			if (p->s_context == current->s_context) {
+				error = send_sig_info(sig, info, p);
+			}
+			break;
+		case 1:
+			error = send_sig_info(sig, info, p);
+			break;
+		default:
+			if (info->si_code == SI_KERNEL
+			    || p->s_context == current->s_context) {
+				error = send_sig_info(sig, info, p);
+			}
+			break;
+		}
 	}
 	read_unlock(&tasklist_lock);
 	return error;
@@ -699,7 +716,7 @@
 
 		read_lock(&tasklist_lock);
 		for_each_task(p) {
-			if (p->pid > 1 && p != current && thread_group_leader(p)) {
+			if (p->pid > 1 && p != current && p->s_context == current->s_context && thread_group_leader(p)) {
 				int err = send_sig_info(sig, info, p);
 				++count;
 				if (err != -EPERM)