lkml.org 
[lkml]   [2018]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 2/2] x86/microcode/intel: Extend BDW late-loading with platform id and LLC check
From
Date
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.
>

\
 
 \ /
  Last update: 2018-01-15 14:07    [W:0.051 / U:5.044 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site