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Message-ID: <47658235.7050409@j-o-a.de> Date: Sun, 16 Dec 2007 20:53:25 +0100 From: Oliver Joa <oliver@...-a.de> To: Gabriel C <nix.or.die@...glemail.com> Cc: linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: Re: How to Switch DMA off for only one Harddisk at Kernelboot Hi, Gabriel C wrote: [...] >>> Also have a look at Documentation/ide.txt. >> I read this already. Searching for "nodma" in this document gives only >> one line: >> >> "ide=nodma" : disable DMA globally for the IDE subsystem. >> >> If the documentation is correct hda=nodma and ideX=nodma should not >> work. I use kernel 2.6.23.1 at the moment. > > grep nodma Documentation/ide.txt > "hdx=nodma" : disallow DMA > > ide=foo_option is for the whole ide sub-system where ideX|hdX=foo_option is just for that HDD. /usr/src/linux-2.6.23.1$ grep nodma Documentation/ide.txt "ide=nodma" : disable DMA globally for the IDE subsystem. /usr/src/linux-2.6.21.5$ grep nodma Documentation/ide.txt "ide=nodma" : disable DMA globally for the IDE subsystem. /usr/src/linux-2.6.12# grep nodma Documentation/ide.txt "ide=nodma" : disable DMA globally for the IDE subsystem. Sorry, but I can not find this option, and it does not work. Which kernel do you use? Thanks Olli -- 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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