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From: Kip Macy <kmacy@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 94744 for review
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http://perforce.freebsd.org/chv.cgi?CH=94744

Change 94744 by kmacy@kmacy_storage:sun4v_rwbuf on 2006/04/06 21:42:41

	no frobbing interrupts during context switch

Affected files ...

.. //depot/projects/kmacy_sun4v/src/sys/sun4v/sun4v/swtch.S#17 edit

Differences ...

==== //depot/projects/kmacy_sun4v/src/sys/sun4v/sun4v/swtch.S#17 (text+ko) ====

@@ -117,14 +117,12 @@
 	stx	%g3, [%g1 + KTR_PARM3]
 9:
 #endif
-	wrpr	%g0, PSTATE_NORMAL, %pstate	
 	ldx	[%i0 + TD_PCB], %i1
 
 	stx	%i0, [PCPU(CURTHREAD)]
 	stx	%i1, [PCPU(CURPCB)]
 
 	mov	%i1, PCB_REG				! load in new PCB
-	wrpr	%g0, PSTATE_KERNEL, %pstate
 
 	ldx	[PCB_REG + PCB_SP], %fp
 	ldx	[PCB_REG + PCB_PC], %i7
@@ -158,7 +156,7 @@
 	ldx	[%i2 + PM_CONTEXT], %l5		! new context
 	ldx	[%l2 + PM_CONTEXT], %l3		! old context
 	cmp	%g0, %l5
-	be,a,pn	%xcc, 5f			! new context == kernel?
+	be,pn	%xcc, 5f			! new context == kernel?
 	  lduw	[PCPU(CPUMASK)], %l4
 
 	brz	%l3, 10f			! old context == kernel?
@@ -217,7 +215,6 @@
 	
 	SET_MMU_CONTEXT(%l6, %l5)
 	
-
 	/*
 	 * Done.  Return and load the new process's window from the stack.
 	 */