From 51303113e32fd92d327b3c441c45e235642fa69c Mon Sep 17 00:00:00 2001
From: Breno Leitao <leitao@debian.org>
Date: Tue, 7 Aug 2018 10:35:00 -0300
Subject: [PATCH] powerpc/tm: Print 64-bits MSR
References: bsc#1118338
Patch-mainline: v4.20-rc1
Git-commit: 51303113e32fd92d327b3c441c45e235642fa69c
On a kernel TM Bad thing program exception, the Machine State Register
(MSR) is not being properly displayed. The exception code dumps a 32-bits
value but MSR is a 64 bits register for all platforms that have HTM
enabled.
This patch dumps the MSR value as a 64-bits value instead of 32 bits. In
order to do so, the 'reason' variable could not be used, since it trimmed
MSR to 32-bits (int).
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
arch/powerpc/kernel/traps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index a29575215198..5ef85ab49dc3 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1433,7 +1433,7 @@ void program_check_exception(struct pt_regs *regs)
goto bail;
} else {
printk(KERN_EMERG "Unexpected TM Bad Thing exception "
- "at %lx (msr 0x%x)\n", regs->nip, reason);
+ "at %lx (msr 0x%lx)\n", regs->nip, regs->msr);
die("Unrecoverable exception", regs, SIGABRT);
}
}
--
2.19.2