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    SubjectRe: AMD microcode fails to update with v3.8.3 and newer, bisect failed
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    On Wednesday 01 January 2014, Ken Moffat wrote:
    >On Thu, Jan 02, 2014 at 04:08:15AM +0000, Ken Moffat wrote:
    >> Anyway, best of luck and I hope you get it sorted.
    >
    > One further suggestion, since you appear to be at the "running
    >round in circles" stage -
    >
    >1. Start with a good kernel. In this case, I suppose 3.8.2 is the
    >right place to begin.

    That has since died, won't boot, don't recall changing a thing in the
    .config either.

    >2. But then change the .config to -
    >
    >2.1 ensure that your disk filesystems are built in - e.g. all of
    >ext2, ext3, ext4 and anything else you know you are using.

    Should I edit in the /etc/grub.d to remove the modprobe ext2, or will it
    more or less silently shake its head and go on.

    >Normally, only the fs for '/' needs to be built in, but you seem to
    >have seen other issues so I would just build in everything you need.
    >
    >2.2 build in everything else you need to boot (normally, the disk
    >controller(s) ) so that you don't need an initrd.

    That would be forcedeath, nouveau, v4l1 and 2 and hda_audio for starters.

    Since this kernel isn't near new enough for the config tricks mentioned,
    maybe I'll see if the linux-stable I have can do a 3.11.0 checkout.

    >
    >2.3 drop the things you don't need - this is merely to reduce the
    >time it takes to build a kernel. Distros normally build
    >_everything_ as a module. Provided you can boot without an initrd,
    >reducing the number of modules only makes it quicker to build a new
    >kernel - but if you are starting from something which looks like
    >"allmodconfig" it can save a lot of time.

    I'll nominate that for understatement of the month. ;-)
    >
    >2.4 for your convenience, ensure that you have enabled the config to
    >be stored in /proc/config.gz - once you are building your own
    >slimmed-down kernels, you probably won't want to mess about with
    >distro "install" scripts so just copying the bzimage to
    >/boot/vmlinuz-x.y.z, make modules_install, and editing
    >/boot/grub/grub.cfg (yes, really!) will save a lot of time.

    My present script does everything but edit grub.cfg.

    >2.5 Add your own version, e.g. for 3.8.2 change EXTRAVERSION to 2-A
    >so that the kernel will be 3.8.2-A (this stops it overwriting
    >existing existing 3.8.2 modules, in case the first attempt doesn't
    >do what you want).

    Never has yet anyway.

    >3. That might take two or three attempts to get to a good config,
    >but after that you should be able to use the slimmer config (from
    >zcat /proc/config.gz) to create .config for any newer version you
    >want to test or bisect, and then just run make oldconfig before you
    >build.
    >
    > Also, when you get back to bisecting, the version in the kernel
    >Makefile might not be what you expect. If in doubt, you can change
    >it to something which doesn't overwrite any existing modules, e.g.
    >3.8.bisect-1 etc.

    Presently it uses a + sign for in between versions.

    > HTH

    It will, if I don't lose my place...
    >ؤ¸en

    My "makeit" script does cd's here and there, so its vital that the Makefile
    version matches the makeit version. I've thought of that, and fixed it in
    the copy I use to make a linux-stable install, but I haven't moved that
    line of script into the tarball builds yet.

    Having an automatic increment, I could eventually fill up the /boot
    partition too. ;-)

    I take it that /proc/config.gz only keeps the lsmod output? That would be
    sweet! Great idea.

    Thanks Ken & Cheers, Gene
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