amd64: Inline set_top_of_stack_td into cpu_thread_new_kstack

Reviewed by:	kib
Sponsored by:	AFRL, DARPA
Pull Request:	https://ron-dev.freebsd.org/FreeBSD/src/pulls/23

sys/amd64/amd64/machdep.c

@@ -1369,6 +1369,7 @@ hammer_time(u_int64_t modulep, u_int64_t physfree)
 	thread0.td_kstack_pages = kstack_pages;
 	kstack0_sz = thread0.td_kstack_pages * PAGE_SIZE;
 	bzero(thread0.td_kstack, kstack0_sz);
+	cpu_thread_new_kstack(&thread0);
 	physfree += kstack0_sz;
 
 	/*
@@ -1521,7 +1522,6 @@ hammer_time(u_int64_t modulep, u_int64_t physfree)
 	 * We initialize the PCB pointer early so that exception
 	 * handlers will work.
 	 */
-	set_top_of_stack_td(&thread0);
 	thread0.td_pcb = get_pcb_td(&thread0);
 
 	/*

sys/amd64/amd64/vm_machdep.c

@@ -83,13 +83,6 @@
 _Static_assert(OFFSETOF_MONITORBUF == offsetof(struct pcpu, pc_monitorbuf),
     "OFFSETOF_MONITORBUF does not correspond with offset of pc_monitorbuf.");
 
-void
-set_top_of_stack_td(struct thread *td)
-{
-	td->td_md.md_stack_base = td->td_kstack +
-	    td->td_kstack_pages * PAGE_SIZE;
-}
-
 struct savefpu *
 get_pcb_user_save_td(struct thread *td)
 {
@@ -384,7 +377,8 @@ cpu_thread_alloc(struct thread *td)
 void
 cpu_thread_new_kstack(struct thread *td)
 {
-	set_top_of_stack_td(td);
+	td->td_md.md_stack_base = td->td_kstack +
+	    td->td_kstack_pages * PAGE_SIZE;
 	td->td_frame = (struct trapframe *)td->td_md.md_stack_base - 1;
 }
 

sys/amd64/include/md_var.h

@@ -94,7 +94,6 @@ void	gsbase_load_fault(void) __asm(__STRING(gsbase_load_fault));
 void	fpstate_drop(struct thread *td);
 void	pagezero(void *addr);
 void	setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
-void	set_top_of_stack_td(struct thread *td);
 struct savefpu *get_pcb_user_save_td(struct thread *td);
 struct savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
 void	pci_early_quirks(void);