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From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     kvm@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
        =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <rkrcmar@redhat.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
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        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org
Subject: KVM: x86: Pass additional FPU bits to the guest
Date:   Wed, 25 Sep 2019 23:37:19 +0200
Message-Id: <20190925213721.21245-1-bigeasy@linutronix.de>
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While testing my FPU patches on AMD's ZEN platform I noticed that the
XSAVES feature flag was never used in the guest while it was present in
the host. Patch #1 seemed to work but I holded on to it because I could
explain why the guest did report ´fxsave_leak' while the host did not.
It turns out that I need #2 _and_ tell qemu not to mask this information
away.

Sebastian