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Message-ID: <1447100910.91534.526.camel@freebsd.org>
Subject: Re: dma
From: Ian Lepore <ian@freebsd.org>
To: Adrian Chadd <adrian.chadd@gmail.com>
Cc: AlexHully <deco33000@yandex.com>, "freebsd-hackers@freebsd.org"
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Date: Mon, 09 Nov 2015 13:28:30 -0700
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On Mon, 2015-11-09 at 12:27 -0800, Adrian Chadd wrote:
> 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

I sure wish I knew what you were talking about.  Why do you trim away
all context?

-- Ian