From 3d6395cb770b0db9135a853b1742418c99ed2148 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 16 Feb 2006 01:41:41 -0800 Subject: [PATCH] [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 --- arch/sparc64/kernel/etrap.S | 6 ++++++ arch/sparc64/kernel/traps.c | 4 +++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S index a0e7d480e5dc..149383835c25 100644 --- a/arch/sparc64/kernel/etrap.S +++ b/arch/sparc64/kernel/etrap.S @@ -188,6 +188,11 @@ etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. 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 @@ etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself. stx %g1, [%g2 + STACK_BIAS + 0x80] +finish_tl1_capture: wrpr %g0, 1, %tl 661: nop .section .sun4v_1insn_patch, "ax" diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c index bedb2f693c76..5956d0a94009 100644 --- a/arch/sparc64/kernel/traps.c +++ b/arch/sparc64/kernel/traps.c @@ -73,10 +73,12 @@ struct tl1_traplog { static void dump_tl1_traplog(struct tl1_traplog *p) { - int i; + int i, limit; printk("TRAPLOG: Error at trap level 0x%lx, dumping track stack.\n", p->tl); + + limit = (tlb_type == hypervisor) ? 2 : 4; for (i = 0; i < 4; i++) { printk(KERN_CRIT "TRAPLOG: Trap level %d TSTATE[%016lx] TPC[%016lx] " -- 2.20.1