From a443506b8598bbd784cfe403ad1db2c7083ff465 Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@samba.org>
Date: Tue, 11 Jan 2011 19:45:31 +0000
Subject: [PATCH] powerpc: Don't force MSR_RI in machine_check_exception
We should never force MSR_RI on. If we take a machine check with MSR_RI off
then we have no chance of recovering safely.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/kernel/traps.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 1b2cdc8eec90..6865002df6ce 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -627,7 +627,6 @@ void machine_check_exception(struct pt_regs *regs)
return;
if (user_mode(regs)) {
- regs->msr |= MSR_RI;
_exception(SIGBUS, regs, BUS_ADRERR, regs->nip);
return;
}
@@ -643,10 +642,8 @@ void machine_check_exception(struct pt_regs *regs)
return;
#endif
- if (debugger_fault_handler(regs)) {
- regs->msr |= MSR_RI;
+ if (debugger_fault_handler(regs))
return;
- }
if (check_io_access(regs))
return;
--
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