From: Anton Blanchard <anton@ozlabs.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
bharata@linux.vnet.ibm.com, arbab@linux.vnet.ibm.com,
npiggin@gmail.com, mikey@neuling.org, cyrilbur@gmail.com,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc/powernv: Increase memory block size to 1GB on radix
Date: Thu, 7 Sep 2017 15:17:41 +1000 [thread overview]
Message-ID: <20170907151741.41ee33a8@kryten> (raw)
In-Reply-To: <ab33351f-1d52-2e55-8aeb-32813ca52e94@linux.vnet.ibm.com>
Hi,
> There is a similar issue being worked on w.r.t pseries.
>
> https://lkml.kernel.org/r/1502357028-27465-1-git-send-email-bharata@linux.vnet.ibm.com
>
> The question is should we map these regions ? ie, we need to tell the
> kernel memory region that we would like to hot unplug later so that
> we avoid doing kernel allocations from that. If we do that, then we
> can possibly map them via 2M size ?
But all of memory on PowerNV should be able to be hot unplugged, so
there are two options as I see it - either increase the memory block
size, or map everything with 2MB pages.
Anton
next prev parent reply other threads:[~2017-09-07 5:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-07 5:05 [PATCH] powerpc/powernv: Increase memory block size to 1GB on radix Anton Blanchard
2017-09-07 5:09 ` Aneesh Kumar K.V
2017-09-07 5:17 ` Anton Blanchard [this message]
2017-09-07 7:21 ` Benjamin Herrenschmidt
2017-09-08 21:51 ` Balbir Singh
2017-09-07 15:59 ` Reza Arbab
2017-09-08 1:15 ` Anton Blanchard
2017-09-09 21:30 ` Michael Ellerman
2017-10-06 11:10 ` Michael Ellerman
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