On Wed, Oct 24, 2018 at 05:09:05PM -0700, Florian Fainelli wrote:
> perf on ARM requires CONFIG_KUSER_HELPERS to be turned on to allow some
> independance with respect to the ARM CPU being used. Add a test which
> tries to locate the [vectors] page, created when CONFIG_KUSER_HELPERS is
> turned on to help asses the system's health.
Hi Florian
I've suffered the pain from missing CONFIG_KUSER_HELPERS. The
segfaults give little clue as to what is going wrong,and gdb is not
much use either.
What i don't see here is any clue to CONFIG_KUSER_HELPERS. If the test
fails, could you print a message suggesting CONFIG_KUSER_HELPERS on
ARM?
Andrew
