[SPARC64]: Fix tl1 trap state capture/dump on SUN4V.
No trap levels above 2 in privileged mode on SUN4V.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S
index a0e7d48..1493838 100644
--- a/arch/sparc64/kernel/etrap.S
+++ b/arch/sparc64/kernel/etrap.S
@@ -188,6 +188,11 @@
rdpr %tt, %g3
stx %g3, [%g2 + STACK_BIAS + 0x38]
+ sethi %hi(is_sun4v), %g3
+ lduw [%g3 + %lo(is_sun4v)], %g3
+ brnz,pn %g3, finish_tl1_capture
+ nop
+
wrpr %g0, 3, %tl
rdpr %tstate, %g3
stx %g3, [%g2 + STACK_BIAS + 0x40]
@@ -210,6 +215,7 @@
stx %g1, [%g2 + STACK_BIAS + 0x80]
+finish_tl1_capture:
wrpr %g0, 1, %tl
661: nop
.section .sun4v_1insn_patch, "ax"