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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-16 01:41:41 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:13:12 -0800
commit3d6395cb770b0db9135a853b1742418c99ed2148 (patch)
tree609b1d8f6d3ff13a312c8eb0ce4f070b644b6e05 /arch
parent135066a21129760e44a51a7ef31d8c861f8ddace (diff)
[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>
Diffstat (limited to 'arch')
-rw-r--r--arch/sparc64/kernel/etrap.S6
-rw-r--r--arch/sparc64/kernel/traps.c4
2 files changed, 9 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S
index a0e7d480e5d..149383835c2 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 bedb2f693c7..5956d0a9400 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] "