6.12-stable review patch. If anyone has any objections, please let me know.
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From: Sean Christopherson seanjc@google.com
commit 9ee62c33c0fe017ee02501a877f6f562363122fa upstream.
Rework CONFIG_KVM_X86's dependency to only check if KVM_INTEL or KVM_AMD is selected, i.e. not 'n'. Having KVM_X86 depend directly on the vendor modules results in KVM_X86 being set to 'm' if at least one of KVM_INTEL or KVM_AMD is enabled, but neither is 'y', regardless of the value of KVM itself.
The documentation for def_tristate doesn't explicitly state that this is the intended behavior, but it does clearly state that the "if" section is parsed as a dependency, i.e. the behavior is consistent with how tristate dependencies are handled in general.
Optionally dependencies for this default value can be added with "if".
Fixes: ea4290d77bda ("KVM: x86: leave kvm.ko out of the build if no vendor module is requested") Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson seanjc@google.com Message-ID: 20241118172002.1633824-3-seanjc@google.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kvm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -18,7 +18,7 @@ menuconfig VIRTUALIZATION if VIRTUALIZATION
config KVM_X86 - def_tristate KVM if KVM_INTEL || KVM_AMD + def_tristate KVM if (KVM_INTEL != n || KVM_AMD != n) select KVM_COMMON select KVM_GENERIC_MMU_NOTIFIER select HAVE_KVM_IRQCHIP