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: <20201015144641.GE29778@kitsune.suse.cz>
Date:   Thu, 15 Oct 2020 16:46:41 +0200
From:   Michal Suchánek <msuchanek@...e.de>
To:     Leonardo Bras <leonardo@...ux.ibm.com>
Cc:     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>, 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

Hello,

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 = nr;
> >         }
> >  
> 
> Just noticed IRQS_ENABLED is not available on other archs than ppc64.
> I will fix this for v7.

Has threre been v7?

I cannot find it.

Thanks

Michal