Messages in this thread | | | Subject | Re: [PATCH 2/2] x86/microcode/intel: Extend BDW late-loading with platform id and LLC check | From | Jia Zhang <> | Date | Mon, 15 Jan 2018 21:06:07 +0800 |
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Yes I'm wrong with platform id so drop it.
Jia
在 2018/1/15 下午6:10, Borislav Petkov 写道: > 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. >
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