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.

1 files changed, 0 insertions, 11 deletions

diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c
index aba0fad44dc5..c181d42b9547 100644
--- a/sys/amd64/amd64/vm_machdep.c
+++ b/sys/amd64/amd64/vm_machdep.c
@@ -51,7 +51,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/systm.h>
 #include <sys/bio.h>
 #include <sys/buf.h>
-#include <sys/kse.h>
 #include <sys/kernel.h>
 #include <sys/ktr.h>
 #include <sys/lock.h>
@@ -272,22 +271,12 @@ cpu_set_upcall(struct thread *td, struct thread *td0)
 	 * Copy the upcall pcb.  This loads kernel regs.
 	 * Those not loaded individually below get their default
 	 * values here.
-	 *
-	 * XXXKSE It might be a good idea to simply skip this as
-	 * the values of the other registers may be unimportant.
-	 * This would remove any requirement for knowing the KSE
-	 * at this time (see the matching comment below for
-	 * more analysis) (need a good safe default).
 	 */
 	bcopy(td0->td_pcb, pcb2, sizeof(*pcb2));
 	pcb2->pcb_flags &= ~PCB_FPUINITDONE;
 
 	/*
 	 * Create a new fresh stack for the new thread.
-	 * Don't forget to set this stack value into whatever supplies
-	 * the address for the fault handlers.
-	 * The contexts are filled in at the time we actually DO the
-	 * upcall as only then do we know which KSE we got.
 	 */
 	bcopy(td0->td_frame, td->td_frame, sizeof(struct trapframe));