linux-kernel - Re: [PATCH] selftests: kvm: fix state save/load on processors without XSAVE

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Message-ID: <CALMp9eSVyTY5k3r-KAAVa4Wft=ruzvJV6F3PkEDvYiYPYEZyJA@mail.gmail.com>
Date:   Wed, 21 Aug 2019 12:50:32 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, kvm list <kvm@...r.kernel.org>
Subject: Re: [PATCH] selftests: kvm: fix state save/load on processors without XSAVE

On Tue, Aug 20, 2019 at 8:36 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> state_test and smm_test are failing on older processors that do not
> have xcr0.  This is because on those processor KVM does provide
> support for KVM_GET/SET_XSAVE (to avoid having to rely on the older
> KVM_GET/SET_FPU) but not for KVM_GET/SET_XCRS.
>
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Reviewed-by: Jim Mattson <jmattson@...gle.com>