Messages in this thread Patch in this message | | | From | Janakarajan Natarajan <> | Subject | [PATCH] Use 'imply' with SEV Kconfig CRYPTO dependencies | Date | Mon, 21 May 2018 10:12:53 -0500 |
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Use Kconfig imply 'option' when specifying SEV CRYPTO dependencies.
Example configuration: . . CONFIG_CRYPTO_DEV_CCP=y CONFIG_CRYPTO_DEV_CCP_DD=m CONFIG_CRYPTO_DEV_SP_CCP=y CONFIG_CRYPTO_DEV_CCP_CRYPTO=m CONFIG_CRYPTO_DEV_SP_PSP=y . . CONFIG_KVM_AMD=y CONFIG_KVM_AMD_SEV=y . .
When the CRYPTO_DEV_SP_DD is m, KVM_AMD set to y produces compile time errors.
Since KVM_AMD_SEV depends on KVM_AMD and CRYPTO_DEV_CCP_DD, the issue can be prevented by using 'imply' Kconfig option when specifying the CRYPTO dependencies.
Fixes: 505c9e94d832 ("KVM: x86: prefer "depends on" to "select" for SEV")
Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> --- arch/x86/kvm/Kconfig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 92fd433..d9b16b7 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -85,7 +85,9 @@ config KVM_AMD_SEV def_bool y bool "AMD Secure Encrypted Virtualization (SEV) support" depends on KVM_AMD && X86_64 - depends on CRYPTO_DEV_CCP && CRYPTO_DEV_CCP_DD && CRYPTO_DEV_SP_PSP + imply CRYPTO_DEV_CCP + imply CRYPTO_DEV_CCP_DD + imply CRYPTO_DEV_SP_PSP ---help--- Provides support for launching Encrypted VMs on AMD processors. -- 2.7.4
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