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From: Thomas Gleixner <tglx@linutronix.de>
To: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
	Ingo Molnar <mingo@elte.hu>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"David S. Miller" <davem@davemloft.net>,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [patch] x86, voyager: fix ioremap_nocache()
Date: Mon, 28 Apr 2008 01:01:50 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.1.10.0804280046100.3261@apollo.tec.linutronix.de> (raw)
In-Reply-To: <4815009C.2010809@garzik.org>

On Sun, 27 Apr 2008, Jeff Garzik wrote:
> 
> Isn't there Yet More Breakage in lib/iomap.c, given these new semantics?
> 
>         if (flags & IORESOURCE_MEM) {
>                 if (flags & IORESOURCE_CACHEABLE)
>                         return ioremap(start, len);
>                 return ioremap_nocache(start, len);
>         }

That's broken anyway as we are inconsistent across
architectures. ioremap defaults to uncached at least on:

POWERPC, ARM, MIPS, SH, FRV, PARISC, H8300, M68K, BLACKFIN, M68KNOMMU

So changing the above to ioremap_cache() would provide the desired
results across architectures.

Thanks,

	tglx

  parent reply	other threads:[~2008-04-27 23:02 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-27 20:51 Breakage caused by unreviewed patch in x86 tree James Bottomley
2008-04-27 20:53 ` David Miller
2008-04-27 21:48 ` [patch] x86, voyager: fix ioremap_nocache() Ingo Molnar
2008-04-27 22:05   ` James Bottomley
2008-04-27 22:36     ` Willy Tarreau
2008-04-27 22:41     ` Ingo Molnar
2008-04-27 23:18     ` Ingo Molnar
2008-04-27 23:31       ` David Miller
2008-04-28  0:31         ` Rik van Riel
2008-04-28  0:45           ` Al Viro
2008-04-28  0:52             ` H. Peter Anvin
2008-04-28  9:01         ` Alan Cox
2008-04-28  9:17           ` David Miller
2008-04-28  9:48             ` Adrian Bunk
2008-04-28 11:50             ` Ingo Molnar
2008-04-28  6:10       ` Christoph Hellwig
2008-04-28 16:55         ` H. Peter Anvin
2008-04-27 22:34   ` James Bottomley
2008-04-27 22:39     ` Jeff Garzik
2008-04-27 22:44       ` H. Peter Anvin
2008-04-27 22:46       ` David Miller
2008-04-27 22:52         ` H. Peter Anvin
2008-04-27 22:58           ` David Miller
2008-04-27 23:04             ` H. Peter Anvin
2008-04-30 20:35               ` Eric W. Biederman
2008-04-27 23:34           ` Jeff Garzik
2008-04-27 23:39             ` H. Peter Anvin
2008-04-27 22:53         ` Jeff Garzik
2008-04-27 22:56           ` H. Peter Anvin
2008-04-27 22:59             ` David Miller
2008-04-27 23:02             ` Jeff Garzik
2008-04-27 23:14               ` Arjan van de Ven
2008-04-27 23:01         ` Arjan van de Ven
2008-04-30 21:44           ` James Bottomley
2008-04-30 22:39             ` H. Peter Anvin
2008-04-27 23:01       ` Thomas Gleixner [this message]
2008-04-28 14:10       ` Arjan van de Ven
2008-04-28 14:29         ` James Bottomley
2008-04-28 15:07           ` Arjan van de Ven
2008-04-28 19:59             ` H. Peter Anvin
2008-04-27 22:00 ` Breakage caused by unreviewed patch in x86 tree H. Peter Anvin
2008-04-27 22:10   ` James Bottomley
2008-04-27 22:13     ` H. Peter Anvin
2008-04-27 22:18       ` James Bottomley
2008-04-27 22:31         ` H. Peter Anvin
2008-04-27 22:58 ` Arjan van de Ven
2008-04-27 23:00   ` David Miller
2008-04-27 23:07     ` Arjan van de Ven
2008-04-27 23:03   ` James Bottomley
2008-04-27 23:11     ` Arjan van de Ven
2008-04-27 23:17     ` H. Peter Anvin

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