X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86_64%2Fkernel%2Fprocess.c;h=bb6745d13b8ff5f3bb1b59d32e50716d910c7c39;hb=3ac94932a2c859e8c57a8af091fa39334e1c3f23;hp=1c44b53cb15bb48391cf4300dbb93fd5fac34835;hpb=f1f76afd71e0f17af9a35fcb649f4bab53304a4d;p=linux-2.6

diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 1c44b53cb1..bb6745d13b 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -10,7 +10,6 @@
  *	Andi Kleen.
  *
  *	CPU hotplug support - ashok.raj@intel.com
- *  $Id: process.c,v 1.38 2002/01/15 10:08:03 ak Exp $
  */
 
 /*
@@ -64,6 +63,7 @@ EXPORT_SYMBOL(boot_option_idle_override);
  * Powermanagement idle function, if any..
  */
 void (*pm_idle)(void);
+EXPORT_SYMBOL(pm_idle);
 static DEFINE_PER_CPU(unsigned int, cpu_idle_state);
 
 static ATOMIC_NOTIFIER_HEAD(idle_notifier);
@@ -111,7 +111,7 @@ static void default_idle(void)
 {
 	local_irq_enable();
 
-	clear_thread_flag(TIF_POLLING_NRFLAG);
+	current_thread_info()->status &= ~TS_POLLING;
 	smp_mb__after_clear_bit();
 	while (!need_resched()) {
 		local_irq_disable();
@@ -120,7 +120,7 @@ static void default_idle(void)
 		else
 			local_irq_enable();
 	}
-	set_thread_flag(TIF_POLLING_NRFLAG);
+	current_thread_info()->status |= TS_POLLING;
 }
 
 /*
@@ -203,8 +203,7 @@ static inline void play_dead(void)
  */
 void cpu_idle (void)
 {
-	set_thread_flag(TIF_POLLING_NRFLAG);
-
+	current_thread_info()->status |= TS_POLLING;
 	/* endless idle loop with no priority at all */
 	while (1) {
 		while (!need_resched()) {
@@ -297,7 +296,7 @@ void __show_regs(struct pt_regs * regs)
 		system_utsname.version);
 	printk("RIP: %04lx:[<%016lx>] ", regs->cs & 0xffff, regs->rip);
 	printk_address(regs->rip); 
-	printk("\nRSP: %04lx:%016lx  EFLAGS: %08lx\n", regs->ss, regs->rsp,
+	printk("RSP: %04lx:%016lx  EFLAGS: %08lx\n", regs->ss, regs->rsp,
 		regs->eflags);
 	printk("RAX: %016lx RBX: %016lx RCX: %016lx\n",
 	       regs->rax, regs->rbx, regs->rcx);
@@ -335,7 +334,7 @@ void show_regs(struct pt_regs *regs)
 {
 	printk("CPU %d:", smp_processor_id());
 	__show_regs(regs);
-	show_trace(&regs->rsp);
+	show_trace(NULL, regs, (void *)(regs + 1));
 }
 
 /*
@@ -365,8 +364,11 @@ void flush_thread(void)
 	struct task_struct *tsk = current;
 	struct thread_info *t = current_thread_info();
 
-	if (t->flags & _TIF_ABI_PENDING)
+	if (t->flags & _TIF_ABI_PENDING) {
 		t->flags ^= (_TIF_ABI_PENDING | _TIF_IA32);
+		if (t->flags & _TIF_IA32)
+			current_thread_info()->status |= TS_COMPAT;
+	}
 
 	tsk->thread.debugreg0 = 0;
 	tsk->thread.debugreg1 = 0;
@@ -575,8 +577,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	prev->userrsp = read_pda(oldrsp); 
 	write_pda(oldrsp, next->userrsp); 
 	write_pda(pcurrent, next_p); 
+
 	/* This must be here to ensure both math_state_restore() and
-	   kernel_fpu_begin() work consistently. */
+	   kernel_fpu_begin() work consistently. 
+	   And the AMD workaround requires it to be after DS reload. */
 	unlazy_fpu(prev_p);
 	write_pda(kernelstack,
 		  task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET);