Commit 461a52a4 authored by Christophe Leroy's avatar Christophe Leroy Committed by Greg Kroah-Hartman

powerpc/traps: fix recoverability of machine check handling on book3s/32

commit 0bbea75c upstream.

Looks like book3s/32 doesn't set RI on machine check, so
checking RI before calling die() will always be fatal
allthought this is not an issue in most cases.

Fixes: b96672dd ("powerpc: Machine check interrupt is a non-maskable interrupt")
Fixes: daf00ae7 ("powerpc/traps: restore recoverability of machine_check interrupts")
Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent baed68a9
...@@ -767,15 +767,15 @@ void machine_check_exception(struct pt_regs *regs) ...@@ -767,15 +767,15 @@ void machine_check_exception(struct pt_regs *regs)
if (check_io_access(regs)) if (check_io_access(regs))
goto bail; goto bail;
/* Must die if the interrupt is not recoverable */
if (!(regs->msr & MSR_RI))
nmi_panic(regs, "Unrecoverable Machine check");
if (!nested) if (!nested)
nmi_exit(); nmi_exit();
die("Machine check", regs, SIGBUS); die("Machine check", regs, SIGBUS);
/* Must die if the interrupt is not recoverable */
if (!(regs->msr & MSR_RI))
nmi_panic(regs, "Unrecoverable Machine check");
return; return;
bail: bail:
......
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