From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Subject: Re: [PATCH] x86: enable swiotlb for > 4GiG ram on 32-bit kernels
Date: Wed, 17 Oct 2018 18:33:51 +0200
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On Tue, Oct 16, 2018 at 09:11:09AM -0400, tedheadster wrote:
> Christoph,
>   this fix has causes performance to decrease dramatically. Kernel
> builds that used to take 10-15 minutes are now taking 45-60 minutes on
> the same machine.

What is the comparism?  Is this on a non-aic7xxx kernel with and without
the fix?