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From: Brijesh Singh <brijesh.singh@amd.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: brijesh.singh@amd.com
Subject: Re: [PATCH] KVM: SVM: document KVM_MEM_ENCRYPT_OP, let userspace detect if SEV is available
Date: Fri, 20 Mar 2020 14:14:19 -0500	[thread overview]
Message-ID: <e7a293bf-acbf-b69a-a082-4a2cce9701b0@amd.com> (raw)
In-Reply-To: <20200320174245.5220-1-pbonzini@redhat.com>


On 3/20/20 12:42 PM, Paolo Bonzini wrote:
> Userspace has no way to query if SEV has been disabled with the
> sev module parameter of kvm-amd.ko.  Actually it has one, but it
> is a hack: do ioctl(KVM_MEM_ENCRYPT_OP, NULL) and check if it
> returns EFAULT.  Make it a little nicer by returning zero for
> SEV enabled and NULL argument, and while at it document the
> ioctl arguments.
>
> Cc: Brijesh Singh <brijesh.singh@amd.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

thanks

Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>



      reply	other threads:[~2020-03-20 19:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20 17:42 Paolo Bonzini
2020-03-20 19:14 ` Brijesh Singh [this message]

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