[PATCH 02/29] powerpc/rtas: prevent suspend-related sys_rtas use on LE

[Andrew Donnellan]

On 30/10/20 11:10 pm, Nathan Lynch wrote:
>> And there's a zero chance that drmgr will ever be fixed on LE?
> 
> It's always used the sysfs interface on LE, and the only way to provoke
> it to attempt the syscalls is by doing something like this before
> running the migration:
> 
> # echo 0 > /tmp/fake_api_version
> # mount -o bind,ro /tmp/fake_api_version /sys/kernel/mobility/api_version
> 
> So I'm not aware of any circumstance that would actually motivate
> someone to make it work on LE. I'd say it's more likely that drmgr will
> drop its support for using the syscall altogether.
> 

Okay. librtas should handle the error fine, so I don't have any huge 
objection to this, though perhaps a documentation patch to librtas to 
mention that these calls are BE-only would be in order.

-- 
Andrew Donnellan              OzLabs, ADL Canberra
ajd at linux.ibm.com             IBM Australia Limited