linux-kernel - Re: [patch V2 09/37] x86/microcode/intel: Remove pointless mutex

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Message-ID: <87zg2vfgy4.ffs@tglx>
Date:   Sun, 13 Aug 2023 11:08:03 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Nikolay Borisov <nik.borisov@...e.com>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Borislav Petkov <bp@...en8.de>,
        Ashok Raj <ashok.raj@...el.com>,
        Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: [patch V2 09/37] x86/microcode/intel: Remove pointless mutex

On Sun, Aug 13 2023 at 09:55, Nikolay Borisov wrote:
> On 12.08.23 г. 22:58 ч., Thomas Gleixner wrote:
>
> So this function is ultimately invoked from a write to the 'reload' 
> sysfs file, what about 2 racing writes to this file ? Though if it's 
> about cpu hotplug then in reload_store() this is handled via 
> cpus_read_lock I guess so indeed this is correct.

80347cd515ca ("x86/microcode: Remove microcode_mutex")