Date: Thu, 3 Mar 2005 15:54:39 +0000 From: Paul Richards <paul@originative.co.uk> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/share/man/man4 ata.4 Message-ID: <20050303155439.GB74241@myrddin.originative.co.uk> In-Reply-To: <20050303152924.GA2971@straylight.m.ringlet.net> References: <200502271423.j1REN4ZK099457@repoman.freebsd.org> <20050303120106.GA74241@myrddin.originative.co.uk> <20050303152924.GA2971@straylight.m.ringlet.net>
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On Thu, Mar 03, 2005 at 05:29:24PM +0200, Peter Pentchev wrote: > On Thu, Mar 03, 2005 at 12:01:06PM +0000, Paul Richards wrote: > > On Sun, Feb 27, 2005 at 02:23:04PM +0000, Peter Pentchev wrote: > > > roam 2005-02-27 14:23:04 UTC > > > > > > FreeBSD src repository (doc,ports committer) > > > > > > Modified files: (Branch: RELENG_5) > > > share/man/man4 ata.4 > > > Log: > > > MFC rev. 1.47 and 1.48: the default for hw.ata.atapi_dma is now DMA, > > > not PIO. > > > > Is this wise? My box won't boot with DMA switched on. > > Mmm... Is *what* wise? :) This commit only documents the kernel's behavior, > which has been the case ever since rev. 1.217 of src/sys/dev/ata/ata_all.c > from August 1 2004. You'll have to talk to Soeren about the wisdom of > enabling ATA and ATAPI DMA by default - and then, this only happens if the > devices actually support it, as described in the documentation. Hah, those documents are dangerous :-) I've always had dma switched off in my loader.conf from the days when that was recommended. I've tried switching dma on recently (about a month ago) and it caused the boot to hang when probing for ATAPI devices. -- Paul Richards
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