From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
benh@kernel.crashing.org, paulus@samba.org
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: Re: [v3, 3/3] powerpc/mm/cxl: Add the fault handling cpu to mm cpumask
Date: Mon, 21 Aug 2017 23:39:10 +1000 (AEST) [thread overview]
Message-ID: <3xbZXv0yxCz9t0F@ozlabs.org> (raw)
In-Reply-To: <20170727062455.15404-3-aneesh.kumar@linux.vnet.ibm.com>
On Thu, 2017-07-27 at 06:24:55 UTC, "Aneesh Kumar K.V" wrote:
> We use mm cpumask for serializing against lockless page table walk. Anybody
> who is doing a lockless page table walk is expected to disable irq and only
> cpus in mm cpumask is expected do the lockless walk. This ensure that
> a THP split can send IPI to only cpus in the mm cpumask, to make sure there
> are no parallel lockless page table walk.
>
> Add the CAPI fault handling cpu to the mm cpumask so that we can do the lockless
> page table walk while inserting hash page table entries.
>
> Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/0f4bc0932e51817105fdee77a46680
cheers
next prev parent reply other threads:[~2017-08-21 13:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-27 6:24 [PATCH v3 1/3] powerpc/mm: Rename find_linux_pte_or_hugepte Aneesh Kumar K.V
2017-07-27 6:24 ` [PATCH v3 2/3] powerpc/mm: Don't send IPI to all cpus on THP updates Aneesh Kumar K.V
2017-08-21 13:39 ` [v3,2/3] " Michael Ellerman
2017-07-27 6:24 ` [PATCH v3 3/3] powerpc/mm/cxl: Add the fault handling cpu to mm cpumask Aneesh Kumar K.V
2017-08-21 13:39 ` Michael Ellerman [this message]
2017-08-21 16:49 ` [v3,3/3] " Benjamin Herrenschmidt
2017-08-21 13:39 ` [v3,1/3] powerpc/mm: Rename find_linux_pte_or_hugepte Michael Ellerman
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