Date: Mon, 09 Feb 2009 09:48:54 -0800 From: Marcel Moolenaar <xcllnt@mac.com> To: Scott Long <scottl@samsco.org> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: svn commit: r188350 - in head/sys: amd64/amd64 arm/arm dev/usb2/core i386/i386 ia64/ia64 sys Message-ID: <859425A6-0F8F-4DE5-9229-4119A1009AD2@mac.com> In-Reply-To: <49903E4A.8000408@samsco.org> References: <200902082254.n18MsxVt037307@svn.freebsd.org> <9E40268E-A2E2-4CAA-AAFE-EB2491175CEE@mac.com> <20090208.170515.1031215309.imp@bsdimp.com> <34EFBA0C-FB99-42DB-BF5C-A889348AD393@mac.com> <498F8015.8000704@samsco.org> <94616FBD-4638-4C51-990C-06A943B1BA2A@mac.com> <49903E4A.8000408@samsco.org>
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On Feb 9, 2009, at 6:31 AM, Scott Long wrote: > Marcel Moolenaar wrote: >> On Feb 8, 2009, at 5:00 PM, Scott Long wrote: >>> Busdma allows you to request bouncing for realignment. >> How exactly? > > By specifying an alignment greater than 1 in the tag. This does not guarantee bounce buffering and without bounce buffering you don't have realignment. -- Marcel Moolenaar xcllnt@mac.com
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