linux-kernel - Re: [PATCH v2] x86/mtrr: Check if fixed-range MTRR exists in mtrr_save_fixed

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Message-ID: <FFB8ACEC-7208-40D0-8B57-EBB2A57DF65F@alien8.de>
Date: Mon, 12 May 2025 10:46:22 +0200
From: Borislav Petkov <bp@...en8.de>
To: Jiaqing Zhao <jiaqing.zhao@...ux.intel.com>
CC: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
 "H. Peter Anvin" <hpa@...or.com>, Bernhard Kaindl <bk@...e.de>,
 Andi Kleen <ak@...ux.intel.com>, Li Fei <fei1.li@...el.com>,
 stable@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] x86/mtrr: Check if fixed-range MTRR exists in mtrr_save_fixed_ranges()

On May 12, 2025 10:31:23 AM GMT+02:00, Jiaqing Zhao <jiaqing.zhao@...ux.intel.com> wrote:
>This fixes unchecked MSR access error on platform without fixed-range
>MTRRs when doing ACPI S3 suspend.

Is this happening on hw which is shipping now and users will see it or is this some new platform which is yet to see the light of day in the future?

-- 
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