ACK/Cmnt: [SRU][F:linux-bluefield][PATCH 0/1] UBUNTU: SAUCE: Automate soft reset of BlueField ARM via GPIO7

Asmaa Mnebhi asmaa at
Tue Jun 1 14:59:19 UTC 2021

Thank you Stefan, I will make sure to fill out that section in the future.


-----Original Message-----
From: Stefan Bader <stefan.bader at> 
Sent: Tuesday, June 1, 2021 10:47 AM
To: Asmaa Mnebhi <asmaa at>; kernel-team at
Subject: ACK/Cmnt: [SRU][F:linux-bluefield][PATCH 0/1] UBUNTU: SAUCE: Automate soft reset of BlueField ARM via GPIO7

On 26.05.21 19:42, Asmaa Mnebhi wrote:
> Buglink:
> SRU Justification:
> [Impact]
> The BlueSphere like boards have a feature where the BMC can trigger a 
> BlueField ARM reset via ipmitool. The ipmitool command simply toggles 
> the signal on a BMC GPIO pin which propagates to HOST GPIO 7. HOST 
> GPIO 7 is setup as an interrupt for SW resetting ARM.
> At the moment, the user needs to manually run bfacpievt script to 
> create acpi files. These files are responsible for triggering a 
> "reboot". This patch automates this process.
> Now, the reboot is entirely handled by the gpio driver.
> [Fix]
> * Remove the acpi event handler code and replace it with kernel 
> emergency_restart
> [Test Case]
> * On BF-2 board with BMC (such as BlueSphere), trigger ARM reset via BMC ipmitool command.
> [Regression Potential]
> No known regression.
The "no known regression" is hard to believe for anything. But also not quite what this section is trying to cover. The change adds an automated reboot mechanism. So the regression potential is that there might be unexpected reboots. This section should be an aid for testers what might be signs of something going wrong that is related to this individual change.

Regardless of that note:

Acked-by: Stefan Bader <stefan.bader at>

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