On Thu, Jan 04, 2018 at 10:13:16PM +0000, Ken Moffat wrote:
[ Correcting my erroneous comment on the skylake firmware, although
it's so embarrassing that I was strongly tempted not to bother. ]
> >
> > Intel are also in the process of releasing new firmware for
> > processors released in the last 5 years. The current firmware is
> > now 20171117 but I'm not sure if that is up to date (it might be!)
> >
> > https://downloadcenter.intel.com/download/27337/Linux-Processor-Microcode-Data-File?v=t
> >
>
> Well, whatever else that does, it does NOT contain anything new for
> my SandyBridge (I didn't really expect any update, it is more than 5
> years old), but also nothing new for my Haswell, which I had thought
> might get an update.
>
> There _is_ a different file for my Skylake, but it doesn't load
> (trying late loading, dmesg reported soemthing like 'unable to
> save', and using it for early loading did not load, and it was a
> PITA to get the earlier firmware loaded (early loading didn't
> happen, but I've now extracted it again to /lib/firmware and managed
> late loading).
>
I've just updated the Skylake to 4.14.12. Embarrassingly, I
discovered my grub entries for this system didn't specify any initrd
(for firmware). Using the debian firmware, which includes fixes for
one of the Spectre vulnerabilities (and where there was an update
for my Haswell), I'm again on 0xba from April. And although the new
intel firmware had a different md5sum, after again altering grub.cfg
and rebooting, it is still 0xba.
Summary - apart from my local errors, for the moment most intel CPUs
do NOT have new firmware to mitigate Spectre.
Still no idea why late loading on the "new" firmware failed.
ĸen
--
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boots with stiletto heels for such a barefaced truth.
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