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Date:      Mon, 9 Nov 2015 12:27:24 -0800
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>
Subject:   Re: dma
Message-ID:  <CAJ-Vmo=qG82whP7%2BJm-aVMekYi%2B_EWRnQ2_7iJrHKVcs1KjcOA@mail.gmail.com>
In-Reply-To: <1447091132.91534.480.camel@freebsd.org>
References:  <298361446978177@web22g.yandex.ru> <1447091132.91534.480.camel@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



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