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From: Ingo Molnar <mingo@kernel.org>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	mingo@redhat.com, hpa@zytor.com,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: irq_fpu_usable() is irreliable
Date: Fri, 27 Nov 2015 09:41:45 +0100	[thread overview]
Message-ID: <20151127084145.GA26693@gmail.com> (raw)
In-Reply-To: <CAHmME9qJ8zr54A+S6+6by2YDos6vc4Dfd2V6gOtraM4mgA5raQ@mail.gmail.com>


* Jason A. Donenfeld <Jason@zx2c4.com> wrote:

> Hi Ingo,
> 
> The plot thickens, once again.
> 
> > > Also, what CPU does the test system have, Intel or AMD? The FPU behavior can be
> > > very different in the two cases.
> > Intel 3820QM, but inside VMWare Workstation 12.
> 
> Trying this on bare metal, the problem goes away! Though the VM is 4.2
> and my bare metal is 4.3. Perhaps your recent changes did something.
> 
> But more likely, there's some funny business happening with VMWare.
> Any speculation about this? Fascinating issue...

I have no idea unfortunately :-( You might want to take it up with the vmware 
guys.

Thanks,

	Ingo

  reply	other threads:[~2015-11-27  8:41 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-17 11:39 irq_fpu_usable() is irreliable Jason A. Donenfeld
2015-11-18  6:55 ` Ingo Molnar
2015-11-18 12:16   ` Jason A. Donenfeld
2015-11-18 19:59     ` Jason A. Donenfeld
2015-11-27  8:41       ` Ingo Molnar [this message]
2015-11-27  8:47     ` Ingo Molnar
     [not found] <CAHmME9rgXh3zQDfc2Yo_Au0CSg--X+ak=SQdS9DoXNsKK0TPmA@mail.gmail.com>
2015-11-17 14:06 ` Thomas Gleixner
2015-11-17 14:51   ` Jason A. Donenfeld
2015-11-17 19:54     ` Jason A. Donenfeld

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