linux-kernel - Re: i387/FPU init issues...

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Date:	Sun, 4 May 2008 15:08:57 +0200
From:	"Sebastian Herbszt" <herbszt@....de>
To:	<hadi@...erus.ca>, "Maciej W. Rozycki" <macro@...ux-mips.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Suresh Siddha" <suresh.b.siddha@...el.com>,
	"Arjan van de Ven" <arjan@...ux.intel.com>,
	"Ingo Molnar" <mingo@...e.hu>,
	"LKML" <linux-kernel@...r.kernel.org>, <jbeulich@...ell.com>
Subject: Re: i387/FPU init issues...

jamal,

> Sorry folks - had to run some errands. Wow, thanks for all the
> responses.
> 
> Yes, the posting i just did (as pointed in my first email) was on
> qemu (so was the /proc/cpuinfo). I moved to qemu because it was less
> painful to do the git bisecting on my laptop; i used the same .config.
> I should also note that qemu seems to have worked fine in the past.
> In any case I will try to rerun on the older hardware which i can access
> next week again. I am begining to doubt myself if it is the same issue;
> i know even there it was pointing to FPU.
> So is the correct fix then to go patch qemu then? I should point i am
> running a slightly older version of qemu that has a few patches (nothing
> to do with x86 emulation).
> 
> hpa, results from running on qemu (not the hardware) are:
> -----
> mambo:~# ./hpa
> Test 0: ok
> Test 1: ok
> Test 2: ok
> Test 3: err
> Test 4: err
> Test 5: err
> Test 6: err
> Test 7: err
> Test 8: err
> ----------------

this is the same result i get with qemu 0.8.2. With version 0.9.0 and
later it is:

debian:~# ./hpa
Test 0: ok
Test 1: ok
Test 2: ok
Test 3: ok
Test 4: ok
Test 5: ok
Test 6: ok
Test 7: ok
Test 8: ok

> cheers,
> jamal
 
-  Sebastian

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