[coreboot] Re: Microcode update in coreboot on Intel HT enabled CPUs

2019-10-08 Thread Raj, Ashok
Hi On Tue, Oct 08, 2019 at 06:47:07AM -0700, Van De Ven, Arjan wrote: > We very strongly suggest that you idle the sibbling, and depending on your > cpu model, you might need some other tweaks. > It's best in general for the system to be as quiet as possible. > Since you say this is coreboot i'

[coreboot] Re: Microcode update in coreboot on Intel HT enabled CPUs

2019-10-08 Thread Van De Ven, Arjan
We very strongly suggest that you idle the sibbling, and depending on your cpu model, you might need some other tweaks. It's best in general for the system to be as quiet as possible. ___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe sen

[coreboot] Re: Microcode update in coreboot on Intel HT enabled CPUs

2019-10-08 Thread Borislav Petkov
Hi Patrick, On Tue, Oct 08, 2019 at 09:50:09AM +0200, Patrick Rudolph wrote: > I proposed the following patch [1], but it turns out that there are > different opinions about updating microcode in parallel. See the functions microcode_reload_late() and __reload_late() here: https://git.kernel.org

[coreboot] Re: Microcode update in coreboot on Intel HT enabled CPUs

2019-10-08 Thread Nico Huber
On 08.10.19 09:50, Patrick Rudolph wrote: > 4. The "Bios Writers Guide" (Document Number 504790 / 550049) states > that microcode must be done on all threads, but synchronized between > sibling threads to only update one at a time. A minor correction: BWGs from Ivy Bridge on (including 550049) sim