linux-kernel - Re: Got FPU related warning on Intel Quark during boot

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Message-ID: <20160310125610.GA26708@pd.tnic>
Date:	Thu, 10 Mar 2016 13:56:10 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Andy Shevchenko <andy.shevchenko@...il.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	Andy Lutomirski <luto@...capital.net>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Oleg Nesterov <oleg@...hat.com>,
	"Yu, Yu-cheng" <yu-cheng.yu@...el.com>
Subject: Re: Got FPU related warning on Intel Quark during boot

On Thu, Mar 10, 2016 at 02:48:09PM +0200, Andy Shevchenko wrote:
> He-he, my cursor stays on
>         if (!use_eager_fpu() || !static_cpu_has(X86_FEATURE_FPU)) {
> while I was having a lunch. So far got from datasheet that some kind
> of FPU is present there.
> 
> eagerfpu=auto doesn't fix
> eagerfpu=off fixes the issue

Looking at the stacktrace, does that quark thing have FXRSTOR?

$ grep -i fxsr /proc/cpuinfo

-- 
Regards/Gruss,
    Boris.

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