Messages in this thread | | | Date | Mon, 15 Jan 2018 11:10:16 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 2/2] x86/microcode/intel: Extend BDW late-loading with platform id and LLC check |
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On Mon, Jan 15, 2018 at 01:43:23PM +0800, Jia Zhang wrote: > The commit b94b73733171 > ("x86/microcode/intel: Extend BDW late-loading with a revision check") > reduces the impact of erratum BDF90 for Broadwell process model. Now, > the impact can be reduced further through adding the checks for > platform id and the size of LLC per core. > > This fix is useful to reduce the impact for microcode update launched > by BIOS with a must machine reset. > > For more details, see erratum BDF90 in document #334165 (Intel Xeon > Processor E7-8800/4800 v4 Product Family Specification Update) from > September 2017.
You must be looking at something NDA or so but this:
https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e7-v4-spec-update.pdf
doesn't have none of that
> + llc_size_per_core(c) > 2621440 && > + c->platform_id == 0xef &&
fun.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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