[Intel-gfx] [PATCH] drm/i915: swizzling support for snb/ivb

Ben Widawsky ben at bwidawsk.net
Sun Feb 5 04:13:41 CET 2012

On 02/02/12 00:40, Daniel Vetter wrote:
> On Wed, Feb 01, 2012 at 09:30:57PM -0800, Ben Widawsky wrote:
> [...]
>> I'd also say it's not a bad idea to elaborate the assumption that we
>> never have less than 256MB of memory WARN_ON(dimm_c0 + dimm_c1 == 0).
> I'm pretty sure that we can't boot with 0mb of ram ;-) The other thing is
> that swizzling is a pure preformance optimization - if we enable it on
> setup where it's not required we'll only annoy the memory controller with
> less efficient access patterns.

What I meant was, this value is still 0 in say, a system with 2
128MB DIMMs.

 > [...]

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