[Arm-dev] kernel 4.11.0-22.el7.2.aarch64 does not boot on ThunderX

Vadim Lomovtsev Vadim.Lomovtsev at caviumnetworks.com
Wed Oct 11 14:28:48 UTC 2017

Hi Itaru,

On Tue, Oct 10, 2017 at 05:30:39PM +0900, Itaru Kitayama wrote:
> Hi,
> In our attempt upgrading from 4.5.0-25.el7.aarch64 to the 4.11-based kernel
> we see the latter does not boot on ThunderX.
> Here's the HW details:
> http://b2b.gigabyte.com/ARM-Server/R150-T62-rev-100#support-manual
> The BIOS release is T43. (According Red Hat, they've been testing fine their
> 1 socket GIGABYTE server with their RHEL 7 kernels.)
> I am wondering what ThunderX platform CentOS has been using for testing, and
> the list happens to have the above HW.
> The boot process seems to be stuck as soon as system prints our EFI stub messages.
> No messages from the kernel.

Could you please try to run kernel with earlycon option?
Append kernel command line with something like "earlycon=pl011,0x87e024000000"
and check kernel output. 
This could give us some hint of what is going on there.


> Is the CentOS Alt architecture group going to release a 4.12 or .13 kernel soon?
> Itaru
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> Arm-dev at centos.org
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