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

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Message-ID: <53daf7e9901d428fa25ede7caa99b520@AcuMS.aculab.com>
Date: Sun, 17 Nov 2024 18:23:20 +0000
From: David Laight <David.Laight@...LAB.COM>
To: 'Borislav Petkov' <bp@...en8.de>, Andrew Cooper
	<andrew.cooper3@...rix.com>, Thomas De Schampheleire
	<thomas.de_schampheleire@...ia.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>
Subject: RE: x86/amd late microcode thread loading slows down boot

...
> +		/*
> +		 * Flush next page too if patch image is crossing a page
> +		 * boundary.
> +		 */
> +		if (p_addr >> PAGE_SHIFT != (p_addr + psize) >> PAGE_SHIFT)
> +			invlpg(p_addr + psize);
> +	}

Shouldn't that be 'psize - 1' ?

	David

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