linux-kernel - Re: [PATCH 02/10] x86,tlb: get INVLPGB count max from CPUID

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Message-ID: <EECE20B7-40A1-46C7-B8D2-C27904B95C37@alien8.de>
Date: Sun, 22 Dec 2024 12:46:47 +0100
From: Borislav Petkov <bp@...en8.de>
To: Rik van Riel <riel@...riel.com>, x86@...nel.org
CC: linux-kernel@...r.kernel.org, kernel-team@...a.com,
 dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
 tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
 akpm@...ux-foundation.org
Subject: Re: [PATCH 02/10] x86,tlb: get INVLPGB count max from CPUID

On December 22, 2024 5:06:34 AM GMT+01:00, Rik van Riel <riel@...riel.com> wrote:
>The CPU advertises the maximum number of pages that can be shot down
>with one INVLPGB instruction in the CPUID data.
>
>Save that information for later use.

Definitely not replicate a single datum into every CPU's descriptor.

-- 
Sent from a small device: formatting sucks and brevity is inevitable.