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From: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
	linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: x86/amd late microcode thread loading slows down boot
Date: Thu, 7 Nov 2024 21:58:12 +0100	[thread overview]
Message-ID: <Zy0p5DT0SOWsCDn7@antipodes> (raw)
In-Reply-To: <20241107153036.GCZyzdHEwm9-LPQOzY@fat_crate.local>

On Thu, Nov 07, 2024 at 04:30:36PM +0100, Borislav Petkov wrote:
> 
> Thanks for saving me some wild goose chasing...
> 
> Thomas, do you want a diff to try?
> 

Thanks Andrew for the suggestion.

I tested with a call to 'flush_tlb_all()' right after native_rdmsr(), inside
__apply_microcode_amd(). This effectively fixes the problem.

Boris, perhaps you can propose a more fine-tuned flushing? I'd be happy to try
that.

Thanks,
Thomas

  reply	other threads:[~2024-11-07 20:58 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-06 17:20 x86/amd late microcode thread loading slows down boot Thomas De Schampheleire
2024-11-06 18:50 ` Andrew Cooper
2024-11-07 15:30   ` Borislav Petkov
2024-11-07 20:58     ` Thomas De Schampheleire [this message]
2024-11-14  9:56       ` Borislav Petkov
2024-11-14 12:03         ` Andrew Cooper
2024-11-15 20:51           ` Borislav Petkov
2024-11-16 19:32             ` Andrew Cooper
2024-11-17 18:23             ` David Laight
2024-11-17 19:52               ` Borislav Petkov
2024-11-18 15:13             ` Thomas De Schampheleire
2024-11-18 15:28               ` Borislav Petkov
2024-11-18 15:58                 ` Thomas De Schampheleire
2024-11-19 10:46                 ` Thomas De Schampheleire
2024-11-19 11:17                   ` Borislav Petkov
2024-11-18 19:16           ` Borislav Petkov
2024-11-14 20:01         ` Thomas De Schampheleire
2024-11-19 11:21 ` [PATCH 1/2] x86/mm: Carve out INVLPG inline asm for use by others Borislav Petkov
2024-11-19 11:21   ` [PATCH 2/2] x86/microcode/AMD: Flush patch buffer mapping after application Borislav Petkov
2024-11-25 11:04 ` [tip: x86/urgent] " tip-bot2 for Borislav Petkov (AMD)
2024-11-25 11:04 ` [tip: x86/urgent] x86/mm: Carve out INVLPG inline asm for use by others tip-bot2 for Borislav Petkov (AMD)

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