From: Michael Neuling <mikey@neuling.org>
To: Stewart Smith <stewart@linux.vnet.ibm.com>, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH] powerpc: Invalidate ERAT on powersave wakeup for POWER9
Date: Thu, 22 Jun 2017 22:09:03 -0500 [thread overview]
Message-ID: <1498187343.30922.0.camel@neuling.org> (raw)
In-Reply-To: <87lgojy1bk.fsf@linux.vnet.ibm.com>
On Fri, 2017-06-23 at 10:50 +1000, Stewart Smith wrote:
> Michael Neuling <mikey@neuling.org> writes:
> > On POWER9 the ERAT may be incorrect on wakeup from some stop states
> > that lose state. This causes random segvs and illegal instructions
> > when these stop states are enabled.
> >=20
> > This patch invalidates the ERAT on wakeup on POWER9 to prevent this
> > from causing a problem.
> >=20
> > Signed-off-by: Michael Neuling <mikey@neuling.org>
>=20
> CC: stable?
Yes please!
Mikey
next prev parent reply other threads:[~2017-06-23 3:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-22 17:26 [PATCH] powerpc: Invalidate ERAT on powersave wakeup for POWER9 Michael Neuling
2017-06-23 0:50 ` Stewart Smith
2017-06-23 2:12 ` Michael Neuling
2017-06-23 3:09 ` Michael Neuling [this message]
2017-06-23 9:33 ` Michael Ellerman
2017-06-23 10:24 ` Nicholas Piggin
2017-06-23 10:45 ` Benjamin Herrenschmidt
2017-06-23 10:22 ` Anshuman Khandual
2017-06-24 17:29 ` [PATCH v2] " Benjamin Herrenschmidt
2017-06-25 5:18 ` Nicholas Piggin
2017-06-29 12:21 ` [v2] " Michael Ellerman
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