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Date:   Tue, 4 Apr 2017 09:32:15 +0200
From:   Joerg Roedel <>
To:     Samuel Sieb <>
Subject: Re: AMD IOMMU causing filesystem corruption

On Tue, Apr 04, 2017 at 12:11:31AM -0700, Samuel Sieb wrote:
> Unfortunately, that turned out to be a bit premature.  After
> compiling a kernel on it remotely over ssh (not interacting with the
> logged in desktop), a reboot failed with endless completion-wait
> loop timeout messages and after a force poweroff and restart it
> won't boot.  The EFI filesystem was even destroyed, probably because
> the kernel installation modified a file on there.

Yeah, please boot the machine with amd_iommu=off during re-installation
and when you install the modified kernel. And then boot into the patches
kernel with amd_iommu=on (which is the default).



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