linux-kernel - Re: [Intel IOMMU 10/10] Iommu floppy workaround

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Message-Id: <200706261237.55649.ak@suse.de>
Date:	Tue, 26 Jun 2007 12:37:55 +0200
From:	Andi Kleen <ak@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>,
	linux-kernel@...r.kernel.org, gregkh@...e.de, muli@...ibm.com,
	suresh.b.siddha@...el.com, arjan@...ux.intel.com,
	ashok.raj@...el.com, davem@...emloft.net, clameter@....com
Subject: Re: [Intel IOMMU 10/10] Iommu floppy workaround


> > Index: linux-2.6.22-rc4-mm2/arch/x86_64/Kconfig
> > ===================================================================
> > --- linux-2.6.22-rc4-mm2.orig/arch/x86_64/Kconfig	2007-06-18 15:45:08.000000000 -0700
> > +++ linux-2.6.22-rc4-mm2/arch/x86_64/Kconfig	2007-06-18 15:45:09.000000000 -0700
> > @@ -752,6 +752,16 @@
> >  	 all the OS visible memory. Hence the driver can continue
> >  	 to use physical addresses for DMA.
> >  
> > +config DMAR_FLPY_WA
> 
> FLOPPY is spelled "FLOPPY"!

Also this shouldn't be a user visible config.  The floppy driver should just
do this transparently when loaded and undo when unloaded.

Otherwise it would be a CONFIG_MAKE_MY_FLOPPY_WORK which is just not very nice.

-Andi
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