linux-kernel - Re: [PATCH] s390/pci: move ioremap/ioremap_prot/ioremap_wc/ioremap

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Message-ID: <d87946d9-dfa6-e279-e9e6-89f6276dc03c@huawei.com>
Date:   Thu, 8 Apr 2021 10:47:53 +0800
From:   Bixuan Cui <cuibixuan@...wei.com>
To:     Niklas Schnelle <schnelle@...ux.ibm.com>,
        <linux-kernel@...r.kernel.org>, <linux-s390@...r.kernel.org>
CC:     <gor@...ux.ibm.com>, <borntraeger@...ibm.com>,
        <john.wanghui@...wei.com>
Subject: Re: [PATCH] s390/pci: move
 ioremap/ioremap_prot/ioremap_wc/ioremap_wt/iounmap to arch/s390/mm/ioremap.c



On 2021/4/6 19:14, Niklas Schnelle wrote:
> and move the have_mio variable out of the PCI only code or use a raw
> "#ifdef CONFIG_PCI". Obviously we don't have any actual users of
> ioremap() that don't depend on CONFIG_PCI but it would make it so that
> ioremap() exists and should actually function without CONFIG_PCI.
> The weird part though is that for anyone using it without CONFIG_PCI it
> would stop working if that is set and the machine doesn't have MIO
> support but would work if it does.
Well, Maybe it's better not to change it.And thank you for the explanation.

Thanks，
Bixuan Cui