[SPARC64]: Fix hypervisor TLB operation error reporting.

1) Trap level wasn't being passed down properly, we need to
   move it from %l4 into the correct outgoing arg register.

2) Although the TPC often provides the most direct clue, we
   have the caller PC so we should provide that as well.

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

2 files changed, 6 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/sun4v_tlb_miss.S b/arch/sparc64/kernel/sun4v_tlb_miss.S
index 9871dbb1ab42..fd9430562e0b 100644
--- a/arch/sparc64/kernel/sun4v_tlb_miss.S
+++ b/arch/sparc64/kernel/sun4v_tlb_miss.S
@@ -215,6 +215,7 @@ sun4v_itlb_error:
 
 1:      ba,pt   %xcc, etrap
 2:       or     %g7, %lo(2b), %g7
+        mov     %l4, %o1
         call    sun4v_itlb_error_report
          add    %sp, PTREGS_OFF, %o0
 
@@ -241,6 +242,7 @@ sun4v_dtlb_error:
 
 1:      ba,pt   %xcc, etrap
 2:       or     %g7, %lo(2b), %g7
+        mov     %l4, %o1
         call    sun4v_dtlb_error_report
          add    %sp, PTREGS_OFF, %o0
 
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 04998388259f..2b6abf633343 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -1950,6 +1950,8 @@ void sun4v_itlb_error_report(struct pt_regs *regs, int tl)
         printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
                regs->tpc, tl);
         print_symbol(KERN_EMERG "SUN4V-ITLB: TPC<%s>\n", regs->tpc);
+        printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
+        print_symbol(KERN_EMERG "SUN4V-ITLB: O7<%s>\n", regs->u_regs[UREG_I7]);
         printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
                "pte[%lx] error[%lx]\n",
                sun4v_err_itlb_vaddr, sun4v_err_itlb_ctx,
@@ -1971,6 +1973,8 @@ void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
         printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
                regs->tpc, tl);
         print_symbol(KERN_EMERG "SUN4V-DTLB: TPC<%s>\n", regs->tpc);
+        printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
+        print_symbol(KERN_EMERG "SUN4V-DTLB: O7<%s>\n", regs->u_regs[UREG_I7]);
         printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
                "pte[%lx] error[%lx]\n",
                sun4v_err_dtlb_vaddr, sun4v_err_dtlb_ctx,