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| author | Sean Christopherson <seanjc@google.com> | 2024-02-22 20:06:10 +0100 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-02-23 02:07:06 +0100 |
| commit | a1176ef5c92aa58e63ecf184b7cac2e311b2b233 (patch) | |
| tree | c04e9fed80c9dde7b8137f8d8bb24d6628cf6ff3 | |
| parent | KVM: x86: Update KVM_SW_PROTECTED_VM docs to make it clear they're a WIP (diff) | |
| download | linux-a1176ef5c92aa58e63ecf184b7cac2e311b2b233.tar.xz linux-a1176ef5c92aa58e63ecf184b7cac2e311b2b233.zip | |
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 <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 1 insertions, 1 deletions
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) |