linux-kernel - Re: [PATCH] x86/fpu: Warn only when CPU-provided sizes less than struct declaration

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Message-ID: <14f027c3-3a14-0369-7b74-1f0bae2d63e8@intel.com>
Date:   Wed, 15 Jan 2020 08:54:42 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        jon.grimm@....com,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Lendacky <Thomas.Lendacky@....com>
Subject: Re: [PATCH] x86/fpu: Warn only when CPU-provided sizes less than
 struct declaration

On 1/13/20 1:54 AM, Suravee Suthikulpanit wrote:
> 
> It would also generate another warning in do_extra_xstate_size_checks()
> due to XSTATE_WARN_ON(paranoid_xstate_size != fpu_kernel_xstate_size)
> (see
> https://elixir.bootlin.com/linux/latest/source/arch/x86/kernel/fpu/xstate.c#L608).

I'd love to see the patch that fixes this. :)

Or, is it already fixed by this?

https://lore.kernel.org/lkml/20200109211452.27369-4-yu-cheng.yu@intel.com/