[PATCH RFC v9 46/51] KVM: SVM: Add module parameter to enable the SEV-SNP
From: Michael Roth <hidden>
Date: 2023-06-12 04:54:38
Also in:
kvm, linux-crypto, linux-mm, lkml
Subsystem:
kernel virtual machine for x86 (kvm/x86), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Sean Christopherson, Paolo Bonzini, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Brijesh Singh <redacted> 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 <redacted> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com> Signed-off-by: Michael Roth <redacted> --- arch/x86/kvm/svm/sev.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 543926fa3200..adbe8c242d81 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c@@ -54,14 +54,16 @@ module_param_named(sev, sev_enabled, bool, 0444); /* enable/disable SEV-ES support */ 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 = true; +module_param_named(sev_snp, sev_snp_enabled, bool, 0444); #else #define sev_enabled false #define sev_es_enabled false +#define sev_snp_enabled false #endif /* CONFIG_KVM_AMD_SEV */ -/* enable/disable SEV-SNP support */ -static bool sev_snp_enabled; - #define AP_RESET_HOLD_NONE 0 #define AP_RESET_HOLD_NAE_EVENT 1 #define AP_RESET_HOLD_MSR_PROTO 2
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2.25.1