linux-kernel - Re: [PATCH v2 03/13] firmware: google: Test spinlock on panic path to avoid lockups

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Message-ID: <YvOqimNnybaCDDBm@kroah.com>
Date:   Wed, 10 Aug 2022 14:54:34 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     "Guilherme G. Piccoli" <gpiccoli@...lia.com>
Cc:     Evan Green <evgreen@...omium.org>, linux-efi@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>, bhe@...hat.com,
        Petr Mladek <pmladek@...e.com>, kexec@...ts.infradead.org,
        linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
        x86@...nel.org, kernel-dev@...lia.com, kernel@...ccoli.net,
        halves@...onical.com, fabiomirmar@...il.com,
        alejandro.j.jimenez@...cle.com,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...en8.de>,
        Jonathan Corbet <corbet@....net>, d.hatayama@...fujitsu.com,
        dave.hansen@...ux.intel.com, dyoung@...hat.com,
        feng.tang@...el.com, mikelley@...rosoft.com,
        hidehiro.kawai.ez@...achi.com, jgross@...e.com,
        john.ogness@...utronix.de, Kees Cook <keescook@...omium.org>,
        luto@...nel.org, mhiramat@...nel.org, mingo@...hat.com,
        paulmck@...nel.org, peterz@...radead.org, rostedt@...dmis.org,
        senozhatsky@...omium.org, Alan Stern <stern@...land.harvard.edu>,
        Thomas Gleixner <tglx@...utronix.de>, vgoyal@...hat.com,
        vkuznets@...hat.com, Will Deacon <will@...nel.org>,
        David Gow <davidgow@...gle.com>,
        Julius Werner <jwerner@...omium.org>
Subject: Re: [PATCH v2 03/13] firmware: google: Test spinlock on panic path
 to avoid lockups

On Mon, Aug 08, 2022 at 12:37:46PM -0300, Guilherme G. Piccoli wrote:
> Let me clarify / ask something: this series, for example, is composed as
> a bunch of patches "centered" around the same idea, panic notifiers
> improvements/fixes. But its patches belong to completely different
> subsystems, like EFI/misc, architectures (alpha, parisc, arm), core
> kernel code, etc.
> 
> What is the best way of getting this merged?
> (a) Re-send individual patches with the respective Review/ACK tags to
> the proper subsystem, or;

Yes.

> (b) Wait until the whole series is ACKed/Reviewed, and a single
> maintainer (like you or Andrew, for example) would pick the whole series
> and apply at once, even if it spans across multiple parts of the kernel?

No, only do this after a kernel release cycle happens and there are
straggler patches that did not get picked up by the relevant subsystem
maintainers.

thanks,

greg k-h