linux-kernel - Re: x86/amd late microcode thread loading slows down boot

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Message-ID: <ZztZsCgX45rrMOVD@antipodes>
Date: Mon, 18 Nov 2024 16:13:52 +0100
From: Thomas De Schampheleire <thomas.de_schampheleire@...ia.com>
To: Borislav Petkov <bp@...en8.de>
Cc: Andrew Cooper <andrew.cooper3@...rix.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org
Subject: Re: x86/amd late microcode thread loading slows down boot

On Fri, Nov 15, 2024 at 09:51:14PM +0100, Borislav Petkov wrote:
> 
> On Thu, Nov 14, 2024 at 12:03:41PM +0000, Andrew Cooper wrote:
[...]
> > However, these blobs are 3200 bytes long and come with a good chance of
> > crossing a page boundary.   If you're invlpg'ing, you need to issue a
> > second one for the final byte of the image too.
> 
> Right, see below. It works here, Thomas you could give it a try too.

Thanks, I tested this version successfully.
I hadn't included the 'size - 1' fix yet but I don't think this could influence
my test negatively.

Please go ahead with the final patch.
Will it be backported to the 6.6.x branch?

Thanks,
Thomas