From: Breno Leitao <leitao@debian.org>
Date: Tue, 7 Aug 2018 13:35:00 +0000 (-0300)
Subject: powerpc/tm: Print 64-bits MSR
X-Git-Tag: v4.20-rc1~97^2~153
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=51303113e32fd92d327b3c441c45e235642fa69c;p=linux.git

powerpc/tm: Print 64-bits MSR

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>
---

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);
 		}
 	}