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    SubjectRe: [PATCH -v2 0/2] x86, microcode: Reload ucode only per-system
    Assuming there are no more objections to those, can we get them into,
    say, tip:x86/microcode for a wider, linux-next testing?

    Peter's stuff could go there too or through the perf tree - it's kinda
    arbitrary though.


    On Thu, Jun 21, 2012 at 02:07:15PM +0200, Borislav Petkov wrote:
    > From: Borislav Petkov <>
    > Ok, here's the second version with all review comments addressed. I've
    > dropped the stable tag since this has been that way (and b0rked) since
    > forever so stable rules don't apply.
    > We can probably do single backports if distros want it.
    > Changelog:
    > -v1:
    > Once upon a time there was this microcode reloading interface
    > /sys/devices/system/cpu/cpuX/microcode/reload, where X is an online
    > cpu on the system, which allowed the loading of microcode in a per-cpu
    > manner.
    > This had problems like having different ucode revisions on an otherwise
    > homogeneous system and needed O(n^2) overhead when tracking minimum
    > microcode revision per-core.
    > So make this interface per-system so that it does microcode reloading on
    > the whole system only.
    > Single commit messages have more info too.
    > The first patch has a stable tag which I'd like to see in stable but
    > since it is not fixing a direct regression, I'd like to not push it
    > upstream now but have it get tested in linux-next and go upstream during
    > the next merge window from where it can trickle slowly to stable.
    > Patches have been tested on all AMD families, it wouldn't hurt if it saw
    > some Intel testing too, although it should just work.
    > Holler if you see regressions/problems with it.
    > Thanks.


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