From mboxrd@z Thu Jan  1 00:00:00 1970
From: Adrian Hunter <adrian.hunter@intel.com>
Subject: Re: [PATCH 00/12 v5] Multiqueue for MMC/SD
Date: Wed, 15 Nov 2017 15:50:12 +0200
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On 14/11/17 23:17, Linus Walleij wrote:
> We have the following risk factors:
> 
> - Observed performance degradation of 1% (on x86 SDHI I guess)
> - The kernel crashes if SD card is removed (both patch sets)

I haven't been able to reproduce that.  Do you have more information?