Re: [RFC PATCH 0/6] User pkey minor bug fixes

[Sohil Mehta]

On 6/10/2022 4:35 PM, ira.weiny@xxxxxxxxx wrote:

> glibc says it returns ENOSYS if the system does not support pkeys but I don't
> see where ENOSYS is returned?  AFAICS it just returns what the kernel returns.
> So it is probably up to user of glibc.

Implementation of the pkeys system calls is arch specific and 
conditional. See kernel/sys_ni.c

glibc is probably talking about ENOSYS being returned when the 
architecture doesn't have support or the CONFIG option is disabled on 
supported architectures.

Thanks,
Sohil