Re: [PATCH v12 25/29] KVM: SVM: Add module parameter to enable the SEV-SNP

Paolo Bonzini
2024-03-30T21:35:52Z

On 3/29/24 23:58, Michael Roth wrote:
> From: Brijesh Singh <brijesh.singh@amd.com>
>
> Add a module parameter than can be used to enable or disable the SEV-SNP
> feature. Now that KVM contains the support for the SNP set the GHCB
> hypervisor feature flag to indicate that SNP is supported.
>
> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

> ---
> arch/x86/kvm/svm/sev.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
> index 3e8de7cb3c89..658116537f3f 100644
> --- a/arch/x86/kvm/svm/sev.c
> +++ b/arch/x86/kvm/svm/sev.c
> @@ -48,7 +48,8 @@ static bool sev_es_enabled = true;
> module_param_named(sev_es, sev_es_enabled, bool, 0444);
>
> /* enable/disable SEV-SNP support */
> -static bool sev_snp_enabled;
> +static bool sev_snp_enabled = true;
> +module_param_named(sev_snp, sev_snp_enabled, bool, 0444);
>
> /* enable/disable SEV-ES DebugSwap support */
> static bool sev_es_debug_swap_enabled = true;