From: Michael Ellerman <mpe@ellerman.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Denis Kirjanov <kda@linux-powerpc.org>
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: Re: unrecoverable exception on G5 with CONFIG_PPC_EARLY_DEBUG enabled
Date: Fri, 17 Jun 2016 11:46:04 +1000 [thread overview]
Message-ID: <1466127964.12899.5.camel@ellerman.id.au> (raw)
In-Reply-To: <1466116390.24271.27.camel@kernel.crashing.org>
On Fri, 2016-06-17 at 08:33 +1000, Benjamin Herrenschmidt wrote:
> On Thu, 2016-06-16 at 22:49 +0300, Denis Kirjanov wrote:
> > -
> > +BEGIN_MMU_FTR_SECTION
> > + b 2f
> > +END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX)
> > andi. r10,r12,MSR_RI /* check for unrecoverable exception
> > */
> > beq- 2f
>
> Are we taking an SLB miss before we do the fixup maybe ?
Yeah that's the only explanation that makes any sense.
I think instead of patching down this low we should instead be redirecting SLB
misses to unknown_exception() when radix is enabled. Aneesh?
cheers
next prev parent reply other threads:[~2016-06-17 1:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 7:52 unrecoverable exception on G5 with CONFIG_PPC_EARLY_DEBUG enabled Denis Kirjanov
2016-06-06 12:27 ` Michael Ellerman
2016-06-16 8:12 ` Denis Kirjanov
2016-06-16 12:07 ` Michael Ellerman
2016-06-16 19:49 ` Denis Kirjanov
2016-06-16 22:33 ` Benjamin Herrenschmidt
2016-06-17 1:46 ` Michael Ellerman [this message]
2016-06-18 17:17 ` Aneesh Kumar K.V
2016-06-20 9:23 ` Michael Ellerman
2016-06-20 10:21 ` Aneesh Kumar K.V
2016-06-21 0:59 ` Michael Ellerman
2016-06-21 4:23 ` Denis Kirjanov
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