linux-kernel - Re: [PATCH 1/2] x86/microcode/AMD: Load late on both threads too

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Message-ID: <d3be3b2b-7c58-36eb-cd25-acea494e608d@intel.com>
Date:   Wed, 7 Jun 2023 12:36:53 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Borislav Petkov <bp@...en8.de>, X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, stable@...nel.org
Subject: Re: [PATCH 1/2] x86/microcode/AMD: Load late on both threads too

On 6/5/23 07:13, Borislav Petkov wrote:
> Do the same as early loading - load on both threads.

Hey Boris,

What's the benefit of doing the loading on both threads?  I would have
naively thought it was just wasted work.

I think I even have a back-burnered Intel patch around somewhere that
ensures that we *never* load on both threads.