From: Nicholas Piggin <npiggin@gmail.com>
To: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Michael Neuling <mikey@neuling.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
"Shreyas B. Prabhu" <shreyasbp@gmail.com>,
Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>,
Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
Anton Blanchard <anton@samba.org>,
Balbir Singh <bsingharora@gmail.com>,
Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [v2 PATCH 4/4] powernv: Recover correct PACA on wakeup from a stop on P9 DD1
Date: Wed, 22 Mar 2017 13:29:34 +1000 [thread overview]
Message-ID: <20170322132934.12ca83c4@roar.ozlabs.ibm.com> (raw)
In-Reply-To: <20170321025946.3c0b68c5@roar.ozlabs.ibm.com>
On Tue, 21 Mar 2017 02:59:46 +1000
Nicholas Piggin <npiggin@gmail.com> wrote:
> On Mon, 20 Mar 2017 21:24:18 +0530
> This is quite neat now you've moved it to its own function. Nice.
> It will be only a trivial clash with my patches now, I think.
>
> Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Hmm... This won't actually work for machine check wakeups either.
We're doing the low level machine check before checking for wakeup,
which complicates things a little bit.
Simplest way to handle that might be to just always immediately
call the restore paca function at machine check entry, and then
just always mark machine checks as not-recoverable for DD1.
Thanks,
Nick
next prev parent reply other threads:[~2017-03-22 3:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-20 15:54 [v2 PATCH 0/4] powernv:idle: Fixes for CPU-Hotplug on POWER DD1.0 Gautham R. Shenoy
2017-03-20 15:54 ` [v2 PATCH 1/4] powernv: Move CPU-Offline idle state invocation from smp.c to idle.c Gautham R. Shenoy
2017-03-20 16:35 ` Nicholas Piggin
2017-03-22 5:41 ` Gautham R Shenoy
2017-03-20 15:54 ` [v2 PATCH 2/4] powernv:smp: Add busy-wait loop as fall back for CPU-Hotplug Gautham R. Shenoy
2017-03-20 15:54 ` [v2 PATCH 3/4] powernv:idle: Don't override default/deepest directly in kernel Gautham R. Shenoy
2017-03-20 16:39 ` Nicholas Piggin
2017-03-22 5:43 ` Gautham R Shenoy
2017-03-20 15:54 ` [v2 PATCH 4/4] powernv: Recover correct PACA on wakeup from a stop on P9 DD1 Gautham R. Shenoy
2017-03-20 16:59 ` Nicholas Piggin
2017-03-22 3:29 ` Nicholas Piggin [this message]
2017-03-22 5:58 ` Gautham R Shenoy
2017-03-22 8:30 ` Nicholas Piggin
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