From mboxrd@z Thu Jan  1 00:00:00 1970
From: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Subject: Re: [CFT PATCH v2 2/2] KVM: x86: support XSAVES usage in the host
Date: Thu, 4 Dec 2014 14:52:56 +0100
Message-ID: <20141204135255.GA26941@potion.brq.redhat.com>
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Cc: Nadav Amit <nadav.amit@gmail.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	kvm list <kvm@vger.kernel.org>,
	Wanpeng Li <wanpeng.li@linux.intel.com>,
	Nadav Amit <namit@cs.technion.ac.il>, hpa@linux.intel.com,
	Fenghua Yu <fenghua.yu@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
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2014-12-04 14:43+0100, Paolo Bonzini:
> On 03/12/2014 19:45, Radim Kr=C4=8Dm=C3=A1=C5=99 wrote:
> > Btw, we don't care about crashers from userspace?
>=20
> We do, but they're taken care of by
>=20
>                 if (xstate_bv & ~kvm_supported_xcr0())
>                         return -EINVAL;
>=20
> in kvm_vcpu_ioctl_x86_set_xsave.  kvm_supported_xcr0 is always a subs=
et
> of host_xcr0, hence:

Ah, thanks.  (If this trend continues, I won't be able to hold even
bodily fluids after few more reviews ...)