linux-kernel - Re: [PATCH v6 02/11] mm/gup: Use functions to track lockless pgtbl walks on gup_pgd

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Message-ID: <760c238043196e0628c8c0eff48a8e938ef539ba.camel@linux.ibm.com>
Date:   Thu, 06 Feb 2020 00:25:18 -0300
From:   Leonardo Bras <leonardo@...ux.ibm.com>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Steven Price <steven.price@....com>,
        Robin Murphy <robin.murphy@....com>,
        Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>,
        Balbir Singh <bsingharora@...il.com>,
        Reza Arbab <arbab@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Allison Randal <allison@...utok.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Michal Suchanek <msuchanek@...e.de>
Cc:     linux-arch@...r.kernel.org, linux-mm@...ck.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        kvm-ppc@...r.kernel.org
Subject: Re: [PATCH v6 02/11] mm/gup: Use functions to track lockless pgtbl
 walks on gup_pgd_range

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 = nr;
>         }
>  

Just noticed IRQS_ENABLED is not available on other archs than ppc64.
I will fix this for v7.

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