From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Date: Fri, 16 Oct 2020 03:39:30 +0000
Subject: Re: [PATCH v6 02/11] mm/gup: Use functions to track lockless pgtbl walks on gup_pgd_range
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To: =?UTF-8?Q?Michal_Such=c3=a1nek?= <msuchanek@suse.de>, Leonardo Bras <leonardo@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Arnd Bergmann <arnd@arndb.de>, Andrew Morton <akpm@linux-foundation.org>, Nicholas Piggin <npiggin@gmail.com>, Christophe Leroy <christophe.leroy@c-s.fr>, Steven Price <steven.price@arm.com>, Robin Murphy <robin.murphy@arm.com>, Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>, Balbir Singh <bsingharora@gmail.com>, Reza Arbab <arbab@linux.ibm.com>, Thomas Gleixner <tglx@linutronix.de>, Allison Randal <allison@lohutok.net>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Mike Rapoport <rppt@linux.ibm.com>, linux-arch@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org

Hi Michal,

On 10/15/20 8:16 PM, Michal Such=C3=A1nek wrote:
> Hello,
>=20
> On Thu, Feb 06, 2020 at 12:25:18AM -0300, Leonardo Bras wrote:
>> On Thu, 2020-02-06 at 00:08 -0300, Leonardo Bras wrote:
>>>                  gup_pgd_range(addr, end, gup_flags, pages, &nr);
>>> -               local_irq_enable();
>>> +               end_lockless_pgtbl_walk(IRQS_ENABLED);
>>>                  ret =3D nr;
>>>          }
>>>  =20
>>
>> Just noticed IRQS_ENABLED is not available on other archs than ppc64.
>> I will fix this for v7.
>=20
> Has threre been v7?
>=20
> I cannot find it.
>=20
> Thanks
>=20
> Michal
>=20

https://lore.kernel.org/linuxppc-dev/20200505071729.54912-1-aneesh.kumar@li=
nux.ibm.com

This series should help here.

-aneesh