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    SubjectRe: [PATCH 2/2] x86, microcode: Make reload interface per system
    On 06/22/2012 09:26 AM, Nix wrote:
    > On 20 Jun 2012, Borislav Petkov uttered the following:
    >> I know, right. Whose idea was it to do it like that I don't know.
    >> AFAICT, Intel delivers ucode as a single blob too, so why split it? The
    >> driver picks out the right blob anyway.
    > Only if supplied over the old interface. Over the new interface,
    > we just see
    > microcode: error! Bad data in microcode data file
    > in the log. So clearly the driver doesn't know how to split up the
    > microcode.bin that Intel provides, and (until Henrique's iucode-tool or
    > something like it becomes ubiquitous) the old interface, and
    > microcode_ctl, cannot be removed.

    Even more importantly, to do early microcode updates we need to stash
    away not just the current CPU's microcode but any compatible CPU's
    microcode, so just loading a single one is not going to work...



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