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Date: Tue, 21 Jul 2015 09:11:29 -0700 From: Dan Williams <dan.j.williams@...el.com> To: Christoph Hellwig <hch@....de> Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...nel.org>, "H. Peter Anvin" <hpa@...or.com>, linux-arch@...r.kernel.org, Tony Luck <tony.luck@...el.com>, Russell King - ARM Linux <linux@....linux.org.uk>, Arnd Bergmann <arnd@...db.de>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Luis Rodriguez <mcgrof@...e.com>, X86 ML <x86@...nel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Ralf Baechle <ralf@...ux-mips.org>, Geert Uytterhoeven <geert@...ux-m68k.org>, "Kani, Toshimitsu" <toshi.kani@...com>, Ross Zwisler <ross.zwisler@...ux.intel.com>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org> Subject: Re: [PATCH 08/10] arch: introduce strict_ioremap On Tue, Jul 21, 2015 at 6:30 AM, Christoph Hellwig <hch@....de> wrote: > On Sun, Jul 19, 2015 at 08:18:17PM -0400, Dan Williams wrote: >> In preparation for enabling memremap(), add support for strict mappings. >> strict_ioremap_<type>() returns NULL if the arch does not implement the >> mapping type, rather than falling back silently to ioremap(). > > Please don't introduce another large number of ioremap variants. > > I think we should go straight to the ioremap_flags variant, although > I wonder if we should even bother with ioremap_flags for this use > case, given that we really want memremap-like semantics for anything > that isn't plain ioremap (and maybe ioremap_nocache). > > Sorry or being the downer, but I really think we need to clean up this > mess deeply insted of trying to paper over it. No worries. I'll rework the series around the idea that memremap() is a replacement rather than a wrapper for ioremap_<type>(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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