From a1176ef5c92aa58e63ecf184b7cac2e311b2b233 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 22 Feb 2024 11:06:10 -0800 Subject: KVM: x86/mmu: Restrict KVM_SW_PROTECTED_VM to the TDP MMU Advertise and support software-protected VMs if and only if the TDP MMU is enabled, i.e. disallow KVM_SW_PROTECTED_VM if TDP is enabled for KVM's legacy/shadow MMU. TDP support for the shadow MMU is maintenance-only, e.g. support for TDX and SNP will also be restricted to the TDP MMU. Fixes: 89ea60c2c7b5 ("KVM: x86: Add support for "protected VMs" that can utilize private memory") Link: https://lore.kernel.org/r/20240222190612.2942589-4-seanjc@google.com Signed-off-by: Sean Christopherson --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/kvm/x86.c') diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 48a61d283406..3638a104bcf7 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4580,7 +4580,7 @@ static bool kvm_is_vm_type_supported(unsigned long type) { return type == KVM_X86_DEFAULT_VM || (type == KVM_X86_SW_PROTECTED_VM && - IS_ENABLED(CONFIG_KVM_SW_PROTECTED_VM) && tdp_enabled); + IS_ENABLED(CONFIG_KVM_SW_PROTECTED_VM) && tdp_mmu_enabled); } int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) -- cgit v1.2.3