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Date: Mon, 9 Nov 2015 12:27:24 -0800
Message-ID: <CAJ-Vmo=qG82whP7+Jm-aVMekYi+_EWRnQ2_7iJrHKVcs1KjcOA@mail.gmail.com>
Subject: Re: dma
From: Adrian Chadd <adrian.chadd@gmail.com>
To: Ian Lepore <ian@freebsd.org>
Cc: AlexHully <deco33000@yandex.com>, 
 "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
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Hi,

You still have 32 bit capable DMA machines on > 32 bit platform devices.

eg, the 36 bit PAE stuff on x86, or the PAE style stuff that showed up
on powerpc, or 32 bit DMA devices on 64 bit intel/arm/mips platforms,
etc.

Bounce buffers aren't going anywhere.



-adrian