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

On 6/10/2022 4:35 PM, ira.weiny@intel.com 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