Re: [patch] kvm: sev: Fail KVM_SEV_INIT if already initialized

Singh, Brijesh
2019-01-02T21:45:00Z

On 1/2/19 2:56 PM, David Rientjes wrote:
> 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>

Thanks for the patch. Looks good.

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