linux-kernel - Re: [PATCH v1] x86/apic: Fix kernel panic when "intremap=off" and "x2apic

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Message-ID: <874jn3qxsa.ffs@tglx>
Date:   Mon, 19 Jun 2023 17:25:41 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Cyrill Gorcunov <gorcunov@...il.com>,
        Dheeraj Kumar Srivastava <dheerajkumar.srivastava@....com>
Cc:     linux-kernel@...r.kernel.org, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        suresh.b.siddha@...el.com,
        Kishon Vijay Abraham I <kvijayab@....com>,
        Vasant Hegde <vasant.hegde@....com>
Subject: Re: [PATCH v1] x86/apic: Fix kernel panic when "intremap=off" and
 "x2apic_phys" are set

On Mon, Jun 19 2023 at 01:24, Cyrill Gorcunov wrote:
>
> Hi! Good catch! In long term I think we could switch to use
> x2apic_state variable instead since at the moment the code is somehow
> hard to read and remember which exactly deps are to be satisfied to
> enable x2apic mode.

It's on my todo list for a very long time. Unfortunately that list is
growing only into one direction...