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Description of problem:
I haven't found any information how to setup memtest86+ to use the serial console. The README mentions that it needs to be enabled before compilation, but doesn't give any clue how to activate/configure the serial console on boot.

Version-Release number of selected component (if applicable):
memtest86+-5.01-1.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. examine /usr/share/doc/memtest86+-5.01/README
2. try to find any other relevant documentation for the package (man pages etc.)

Actual results:
1. no mention how to configure serial parameters on grub commandline
2. none found

Expected results:
1. information that you have to add something like "console=ttyS4,115200n8" on kernel line in grub
2. manpage for memtest86+ exists, explaining usage in RHEL (e.g. the grub line added by memtest-setup is different from what is in README, why, what is this elf-memtest86 thing about etc.)

Additional info:

There is currently no memtest86+ manual page, we could add one for better user experience.

Adding README.dist instead of manual page, because the distro specific manual page would hardly fit any manual section (maybe section 7) - memtest stays aside the system and readme files are easier to read/print, not counting there could be conflict later if upstream adds some manual page for it.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0907.html