[PATCH 2/5] powerpc/oops: Print the kernel's endian in the oops

Michael Ellerman mpe at ellerman.id.au
Wed Aug 23 23:56:21 AEST 2017


Although the MSR tells you what endian you're in it's possible that
isn't the same endian the kernel was built for, and if that happens
you're usually having a very bad day. So print a marker to make
it 100% clear which endian the kernel was built for.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/kernel/traps.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 82d0ce236f9d..5a54a6f54f70 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -202,6 +202,12 @@ NOKPROBE_SYMBOL(oops_end);
 static int __die(const char *str, struct pt_regs *regs, long err)
 {
 	printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
+
+	if (IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN))
+		printk("LE ");
+	else
+		printk("BE ");
+
 #ifdef CONFIG_PREEMPT
 	pr_cont("PREEMPT ");
 #endif
-- 
2.7.4



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