From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Reza Arbab <arbab@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Cc: Alistair Popple <apopple@au1.ibm.com>,
linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: Re: powerpc/mm: fix memory hotplug BUG() on radix
Date: Wed, 18 Jan 2017 23:10:22 +1100 (AEDT) [thread overview]
Message-ID: <3v3Qlf5kWfz9tk6@ozlabs.org> (raw)
In-Reply-To: <1483475991-16999-1-git-send-email-arbab@linux.vnet.ibm.com>
On Tue, 2017-01-03 at 20:39:51 UTC, Reza Arbab wrote:
> Memory hotplug is leading to hash page table calls, even on radix:
>
> ...
> arch_add_memory
> create_section_mapping
> htab_bolt_mapping
> BUG_ON(!ppc_md.hpte_insert);
>
> To fix, refactor {create,remove}_section_mapping() into hash__ and
> radix__ variants. Leave the radix versions stubbed for now.
>
> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> Acked-by: Balbir Singh <bsingharora@gmail.com>
> Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/32b53c012e0bfe20b2745962a89db0
cheers
prev parent reply other threads:[~2017-01-18 12:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-03 20:39 [PATCH] powerpc/mm: fix memory hotplug BUG() on radix Reza Arbab
2017-01-18 12:10 ` Michael Ellerman [this message]
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