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Message-ID: <Y0u4tN+mIgNSWwdi@li-4a3a4a4c-28e5-11b2-a85c-a8d192c6f089.ibm.com>
Date:   Sun, 16 Oct 2022 09:54:28 +0200
From:   Alexander Gordeev <agordeev@...ux.ibm.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        Baoquan He <bhe@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@...radead.org>,
        wangkefeng.wang@...wei.com, schnelle@...ux.ibm.com,
        David.Laight@...lab.com, shorne@...il.com
Subject: Re: [RFC PATCH 7/8] mm/ioremap: Consider IOREMAP space in generic
 ioremap

On Wed, Oct 12, 2022 at 12:39:11PM +0200, Arnd Bergmann wrote:
> "Some" means exactly powerpc64, right? It looks like microblaze
> and powerpc32 still share some of this code, but effectively
> just use the vmalloc area once the slab allocator is up.
> 
> Is the special case still useful for powerpc64 or could this be
> changed to do it the same as everything else?

Or make it the other way around and set IOREMAP_START/IOREMAP_END
to VMALLOC_START/VMALLOC_END by default?

> 
>     Arnd

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