Date: Wed, 11 Jan 2012 10:04:13 -0700 From: Scott Long <scottl@samsco.org> To: Ian Lepore <freebsd@damnhippie.dyndns.org> Cc: freebsd-current@freebsd.org Subject: Re: memory barriers in bus_dmamap_sync() ? Message-ID: <DB59B502-AD8E-44C8-A748-A5BAC9EAA323@samsco.org> In-Reply-To: <1326301229.2419.78.camel@revolution.hippie.lan> References: <20120110213719.GA92799@onelab2.iet.unipi.it> <201201111005.28610.jhb@freebsd.org> <20120111162944.GB2266@onelab2.iet.unipi.it> <201201111149.44067.jhb@freebsd.org> <1326301229.2419.78.camel@revolution.hippie.lan>
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On Jan 11, 2012, at 10:00 AM, Ian Lepore wrote: >=20 > I've wished (in the ARM world) for the ability to sync a portion of a > map. I've even kicked around the idea of proposing an API extension = to > do so, but I guess if FreeBSD went out of its way to remove that > functionality that idea probably won't fly. :) It's been discussed numerous times since mips and arm became relevant in = FreeBSD, and I'm frankly surprised that it hasn't happened yet. Go = forth and code, it won't be opposed. Scott
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