Re: [PATCH] RFT: mmc: sdhci: Implement an SDHCI-specific bounce buffer

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On Fri, Jan 5, 2018 at 8:51 AM, Benjamin Beckmeyer
<beckmeyer.b@xxxxxxxxx> wrote:

> I can comfort you, it doesn't work :). I tried both, with your print
> outs and without.

Hey it doesn't segfault! :D

> After I patched the kernel it doesn't find the root
> filesystem anymore. Here is the kernel log:

OK I clearly need to find a system with sdhci on it, so I dug up a laptop
with SDHCI to experiment on. Now trying to figure out a bit about
x86_64 development...

> Suprisingly there is a mmcblk0rpmb partition now. I don't know what that is
> and if this was there before, but normally it has nothing to do
> with our system. On our other systems it is not present.

It is a feature of the eMMC card, and the feature list is retrieved with
special commands from the card. Usually eMMCs that have boot partitions
also have an RPMB partition.

Yours,
Linus Walleij
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