Messages in this thread | | | Date | Mon, 26 Aug 2019 13:23:39 -0700 | From | "Raj, Ashok" <> | Subject | Re: [PATCH 1/2] x86/microcode: Update late microcode in parallel |
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Hi Boris
Minor nit: Small commit log fixup below.
On Sat, Aug 24, 2019 at 10:53:00AM +0200, Borislav Petkov wrote: > From: Ashok Raj <ashok.raj@intel.com> > Date: Thu, 22 Aug 2019 23:43:47 +0300 > > Microcode update was changed to be serialized due to restrictions after > Spectre days. Updating serially on a large multi-socket system can be > painful since it is being done on one CPU at a time. > > Cloud customers have expressed discontent as services disappear for a > prolonged time. The restriction is that only one core goes through the s/one core/one thread of a core/
> update while other cores are quiesced. s/cores/other thread(s) of the core
> > Do the microcode update only on the first thread of each core while > other siblings simply wait for this to complete. > > [ bp: Simplify, massage, cleanup comments. ] >
Cheers, Ashok
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