[SPARC64]: %l6 trap return handling no longer necessary.

Now that we indicate the "restart system call" in the
trap type field of pt_regs->magic, we don't need to
set the %l6 boolean in all of the trap return paths.

And we therefore don't need to pass it to do_notify_resume().

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 18 deletions

diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index f54cd2dd55dc..fd06e937ae1e 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -47,7 +47,7 @@ do_fpdis:
 	ba,pt		%xcc, etrap
 109:	 or		%g7, %lo(109b), %g7
 	add		%g0, %g0, %g0
-	ba,a,pt		%xcc, rtrap_clr_l6
+	ba,a,pt		%xcc, rtrap
 
 1:	TRAP_LOAD_THREAD_REG(%g6, %g1)
 	ldub		[%g6 + TI_FPSAVED], %g5
@@ -226,7 +226,7 @@ fp_other_bounce:
 	call		do_fpother
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	.globl		do_fpother_check_fitos
 	.align		32
@@ -489,7 +489,7 @@ utrap_trap:		/* %g3=handler,%g4=level */
         call		bad_trap
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 invoke_utrap:
 	sllx		%g3, 3, %g3
@@ -607,7 +607,7 @@ __spitfire_cee_trap_continue:
 	call		spitfire_access_error
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	/* This is the trap handler entry point for ECC correctable
 	 * errors.  They are corrected, but we listen for the trap
@@ -686,7 +686,7 @@ __spitfire_data_access_exception_tl1:
 	call		spitfire_data_access_exception_tl1
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 __spitfire_data_access_exception:
 	rdpr		%pstate, %g4
@@ -705,7 +705,7 @@ __spitfire_data_access_exception:
 	call		spitfire_data_access_exception
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	.globl		__spitfire_insn_access_exception
 	.globl		__spitfire_insn_access_exception_tl1
@@ -725,7 +725,7 @@ __spitfire_insn_access_exception_tl1:
 	call		spitfire_insn_access_exception_tl1
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 __spitfire_insn_access_exception:
 	rdpr		%pstate, %g4
@@ -743,7 +743,7 @@ __spitfire_insn_access_exception:
 	call		spitfire_insn_access_exception
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	/* These get patched into the trap table at boot time
 	 * once we know we have a cheetah processor.
@@ -937,7 +937,7 @@ do_dcpe_tl1_fatal:
 	call		cheetah_plus_parity_error
 	 add		%sp, PTREGS_OFF, %o1
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 do_icpe_tl1:
 	rdpr		%tl, %g1		! Save original trap level
@@ -979,7 +979,7 @@ do_icpe_tl1_fatal:
 	call		cheetah_plus_parity_error
 	 add		%sp, PTREGS_OFF, %o1
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 	
 dcpe_icpe_tl1_common:
 	/* Flush D-cache, re-enable D/I caches in DCU and finally
@@ -1281,7 +1281,7 @@ __do_privact:
 	call		do_privact
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	.globl		do_mna
 do_mna:
@@ -1308,7 +1308,7 @@ do_mna:
 	call		mem_address_unaligned
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	.globl		do_lddfmna
 do_lddfmna:
@@ -1326,7 +1326,7 @@ do_lddfmna:
 	call		handle_lddfmna
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	.globl		do_stdfmna
 do_stdfmna:
@@ -1344,7 +1344,7 @@ do_stdfmna:
 	call		handle_stdfmna
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
-	 clr		%l6
+	 nop
 
 	.globl	breakpoint_trap
 breakpoint_trap:
@@ -1424,13 +1424,13 @@ sys32_rt_sigreturn:
 1:		ldx		[%curptr + TI_FLAGS], %l5
 		andcc		%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
 		be,pt		%icc, rtrap
-		 clr		%l6
+		 nop
 		add		%sp, PTREGS_OFF, %o0
 		call		syscall_trace
 		 mov		1, %o1
 
 		ba,pt		%xcc, rtrap
-		 clr		%l6
+		 nop
 
 	/* This is how fork() was meant to be done, 8 instruction entry.
 	 *
@@ -1605,7 +1605,7 @@ ret_sys_call:
 	bne,pn		%icc, linux_syscall_trace2
 	 add		%l1, 0x4, %l2			! npc = npc+4
 	stx		%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
-	ba,pt		%xcc, rtrap_clr_l6
+	ba,pt		%xcc, rtrap
 	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
 
 1:
@@ -1616,7 +1616,6 @@ ret_sys_call:
 	sub		%g0, %o0, %o0
 	or		%g3, %g2, %g3
 	stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]
-	mov		1, %l6
 	stx		%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
 	bne,pn		%icc, linux_syscall_trace2
 	 add		%l1, 0x4, %l2			! npc = npc+4