linux-kernel - Re: [v8, 4/5] x86/xsave: Make XSAVE check the base CPUID features before enabling

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Date:   Thu, 16 Nov 2017 11:03:47 -0800
From:   Andi Kleen <andi@...stfloor.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Andi Kleen <andi@...stfloor.org>, Andi Kleen <ak@...ux.intel.com>,
        x86@...nel.org, hpa@...or.com, linux-kernel@...r.kernel.org
Subject: Re: [v8, 4/5] x86/xsave: Make XSAVE check the base CPUID features
 before enabling

> It is what I use at kerneltests.org.
> See https://github.com/groeck/linux-build-test/tree/master/rootfs/x86_64
> for configuration and script.
> 
> > I can't reproduce it here with different qemu settings.
> > 
> Interesting. What version of qemu are you using ?

I tested with your config: -no-kvm -cpu Broadwell-noTSX -M q35 and still
don't see any boot warnings. This is 

QEMU emulator version 2.9.1(qemu-2.9.1-2.fc26)

If you're on an older version it may be already fixed in qemu then.

-Andi