From mboxrd@z Thu Jan  1 00:00:00 1970
From: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Subject: Re: [patch] kvm: sev: Fail KVM_SEV_INIT if already initialized
Date: Fri, 11 Jan 2019 14:50:26 +0100
Message-ID: <20190111135025.GF14852@flask>
References: <alpine.DEB.2.21.1901021255410.62182@chino.kir.corp.google.com>
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Cc: Brijesh Singh <brijesh.singh@amd.com>,
        Joerg Roedel <joro@8bytes.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Thomas Lendacky <Thomas.Lendacky@amd.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org
To: David Rientjes <rientjes@google.com>
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2019-01-02 12:56-0800, David Rientjes:
> By code inspection, it was found that multiple calls to KVM_SEV_INIT
> could deplete asid bits and overwrite kvm_sev_info's regions_list.
> 
> Multiple calls to KVM_SVM_INIT is not likely to occur with QEMU, but this
> should likely be fixed anyway.
> 
> This code is serialized by kvm->lock.
> 
> Fixes: 1654efcbc431 ("KVM: SVM: Add KVM_SEV_INIT command")
> Reported-by: Cfir Cohen <cfir@google.com>
> Signed-off-by: David Rientjes <rientjes@google.com>
> ---

Applied, thanks.