Remove kernel support for M:N threading.

While the KSE project was quite successful in bringing threading to
FreeBSD, the M:N approach taken by the kse library was never developed
to its full potential.  Backwards compatibility will be provided via
libmap.conf for dynamically linked binaries and static binaries will
be broken.

4 files changed, 0 insertions, 11 deletions

diff --git a/sys/ia64/conf/DEFAULTS b/sys/ia64/conf/DEFAULTS
index 7afec5c..1a96cd6 100644
--- a/sys/ia64/conf/DEFAULTS
+++ b/sys/ia64/conf/DEFAULTS
@@ -17,6 +17,3 @@ device		uart_ns8250
 options 	GEOM_PART_BSD
 options 	GEOM_PART_GPT
 options 	GEOM_PART_MBR
-
-# KSE support went from being default to a kernel option
-options 	KSE
diff --git a/sys/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c
index 6e98bd0..fe50d45 100644
--- a/sys/ia64/ia64/machdep.c
+++ b/sys/ia64/ia64/machdep.c
@@ -1231,9 +1231,6 @@ set_mcontext(struct thread *td, const mcontext_t *mc)
 	restore_callee_saved(&mc->mc_preserved);
 	restore_callee_saved_fp(&mc->mc_preserved_fp);
 
-	if (mc->mc_flags & _MC_FLAGS_KSE_SET_MBOX)
-		suword((caddr_t)mc->mc_special.ifa, mc->mc_special.isr);
-
 	return (0);
 }
 
diff --git a/sys/ia64/ia64/trap.c b/sys/ia64/ia64/trap.c
index a970353..aa31e6c 100644
--- a/sys/ia64/ia64/trap.c
+++ b/sys/ia64/ia64/trap.c
@@ -987,10 +987,6 @@ syscall(struct trapframe *tf)
 	td->td_pticks = 0;
 	if (td->td_ucred != p->p_ucred)
 		cred_update_thread(td);
-#ifdef KSE
-	if (p->p_flag & P_SA)
-		thread_user_enter(td);
-#endif
 
 	if (p->p_sysent->sv_prepsyscall) {
 		/* (*p->p_sysent->sv_prepsyscall)(tf, args, &code, &params); */
diff --git a/sys/ia64/include/ucontext.h b/sys/ia64/include/ucontext.h
index 5619d59..f4af26c 100644
--- a/sys/ia64/include/ucontext.h
+++ b/sys/ia64/include/ucontext.h
@@ -79,7 +79,6 @@ typedef struct __mcontext {
 	unsigned long		mc_flags;
 #define	_MC_FLAGS_ASYNC_CONTEXT		0x0001
 #define	_MC_FLAGS_HIGHFP_VALID		0x0002
-#define	_MC_FLAGS_KSE_SET_MBOX		0x0004	/* Undocumented. Has to go. */
 #define	_MC_FLAGS_SYSCALL_CONTEXT	0x0008
 	unsigned long		_reserved_;
 	struct _special		mc_special;