Building an image with KVM_AMD=y, CRYPTO_DEV_SP_PSP=y, and
CRYPTO_DEV_CCP_DD=m fails with the following error messages.
arch/x86/kvm/svm.c:6287: undefined reference to `sev_issue_cmd_external_user'
arch/x86/kvm/svm.o: In function `sev_unbind_asid':
arch/x86/kvm/svm.c:1747: undefined reference to `sev_guest_deactivate'
arch/x86/kvm/svm.c:1750: undefined reference to `sev_guest_df_flush'
arch/x86/kvm/svm.c:1759: undefined reference to `sev_guest_decommission'
Analysis shows that commit 59414c9892208 ("KVM: SVM: Add support for
KVM_SEV_LAUNCH_START command") added a dependency of KVM_AMD on
CRYPTO_DEV_CCP_DD if CRYPTO_DEV_SP_PSP is enabled: If CRYPTO_DEV_CCP_DD
is built as module, KVM_AMD must be built as module as well.
Fixes: 59414c9892208 ("KVM: SVM: Add support for KVM_SEV_LAUNCH_START command")
Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
arch/x86/kvm/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 1bbec387d289..a8eff6910ea3 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -74,6 +74,7 @@ config KVM_INTEL
config KVM_AMD
tristate "KVM for AMD processors support"
depends on KVM
+ depends on !CRYPTO_DEV_SP_PSP || (CRYPTO_DEV_SP_PSP && CRYPTO_DEV_CCP_DD)
---help---
Provides support for KVM on AMD processors equipped with the AMD-V
(SVM) extensions.
--
2.7.4
