linux-kernel - Re: [PATCH 6/6] x86/smpboot: Simplify boot CPU setup

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Message-ID: <21b4dad27b8c5479eecccf7fa08530a4b8c7b213.camel@infradead.org>
Date:   Thu, 23 Feb 2023 12:36:41 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     Brian Gerst <brgerst@...il.com>, linux-kernel@...r.kernel.org,
        x86@...nel.org
Cc:     Usama Arif <usama.arif@...edance.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 6/6] x86/smpboot: Simplify boot CPU setup

On Wed, 2023-02-22 at 17:13 -0500, Brian Gerst wrote:
> 
>  /* Control bits for startup_64 */
> -#define STARTUP_SECONDARY      0x80000000
>  #define STARTUP_APICID_CPUID_0B        0x40000000
>  #define STARTUP_APICID_CPUID_01        0x20000000

Might as well change CPUID_01 to 0x80000000 while you're at it?


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