Skip site navigation (1)Skip section navigation (2)
Date:      Fri, 28 Oct 2011 09:16:16 +0200
From:      Hans Petter Selasky <hselasky@c2i.net>
To:        freebsd-arch@freebsd.org
Cc:        Adrian Chadd <adrian@freebsd.org>
Subject:   Re: newbus IO ordering semantics - moving forward
Message-ID:  <201110280916.16312.hselasky@c2i.net>
In-Reply-To: <CAJ-VmonXtXPNuu=b%2BM4Zj=xz0Jy1e65qj1sS2En1fJPfPy%2Bi=Q@mail.gmail.com>
References:  <CAJ-VmonFJG3xLn2JvarOUN6o-e7MC%2BA%2B=W9_vocZqY6L3CmTmQ@mail.gmail.com> <E24309DA-09E3-40E1-A605-5CC72F03150A@bsdimp.com> <CAJ-VmonXtXPNuu=b%2BM4Zj=xz0Jy1e65qj1sS2En1fJPfPy%2Bi=Q@mail.gmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday 27 October 2011 22:49:12 Adrian Chadd wrote:
> I have no idea. Which architectures would benefit?

Often PIO is rare with high performance devices. Usually data is moved using 
DMA.

--HPS



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201110280916.16312.hselasky>