Re: [PATCH] video: fbdev: atyfb: only use ioremap_uc() on i386 and ia64
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- To: Luis Chamberlain <mcgrof@xxxxxxxxxx>
- Subject: Re: [PATCH] video: fbdev: atyfb: only use ioremap_uc() on i386 and ia64
- From: Christoph Hellwig <hch@xxxxxx>
- Date: Wed, 13 Nov 2019 08:27:08 +0100
- Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Tuowen Zhao <ztuowen@xxxxxxxxx>, AceLan Kao <acelan.kao@xxxxxxxxxxxxx>, Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>, Roman Gilg <subdiff@xxxxxxxxx>, Lee Jones <lee.jones@xxxxxxxxxx>, "Luis R. Rodriguez" <mcgrof@xxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>, X86 ML <x86@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, linux-ia64@xxxxxxxxxxxxxxx, Tony Luck <tony.luck@xxxxxxxxx>, Fenghua Yu <fenghua.yu@xxxxxxxxx>, Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>, Souptick Joarder <jrdr.linux@xxxxxxxxx>, dri-devel <dri-devel@xxxxxxxxxxxxxxxxxxxxx>, Linux Fbdev development list <linux-fbdev@xxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
- In-reply-to: <20191112222423.GO11244@42.do-not-panic.com>
- References: <20191111192258.2234502-1-arnd@arndb.de> <20191112105507.GA7122@lst.de> <CAKMK7uEEz1n+zuTs29rbPHU74Dspaib=prpMge63L_-rUk_o4A@mail.gmail.com> <20191112140631.GA10922@lst.de> <CAKMK7uFaA607rOS6x_FWjXQ2+Qdm8dQ1dQ+Oi-9if_Qh_wHWPg@mail.gmail.com> <20191112222423.GO11244@42.do-not-panic.com>
- User-agent: Mutt/1.5.17 (2007-11-01)
On Tue, Nov 12, 2019 at 10:24:23PM +0000, Luis Chamberlain wrote:
> I think this would be possible if we could flop ioremap_nocache() to UC
> instead of UC- on x86. Otherwise, I can't see how we can remove this by
> still not allowing direct MTRR calls.
If everything goes well ioremap_nocache will be gone as of 5.5.
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