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    Subject[PATCH v11 03/20] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC
    Date
    TDX capable platforms are locked to X2APIC mode and cannot fall back to
    the legacy xAPIC mode when TDX is enabled by the BIOS. TDX host support
    requires x2APIC. Make INTEL_TDX_HOST depend on X86_X2APIC.

    Link: https://lore.kernel.org/lkml/ba80b303-31bf-d44a-b05d-5c0f83038798@intel.com/
    Signed-off-by: Kai Huang <kai.huang@intel.com>
    Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
    Reviewed-by: David Hildenbrand <david@redhat.com>
    ---

    v10 -> v11:
    - Added David's Reviewed-by.

    v9 -> v10:
    - No change.

    v8 -> v9:
    - Added Dave's Reviewed-by.

    v7 -> v8: (Dave)
    - Only make INTEL_TDX_HOST depend on X86_X2APIC but removed other code
    - Rewrote the changelog.

    v6 -> v7:
    - Changed to use "Link" for the two lore links to get rid of checkpatch
    warning.

    ---
    arch/x86/Kconfig | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
    index 191587f75810..f0f3f1a2c8e0 100644
    --- a/arch/x86/Kconfig
    +++ b/arch/x86/Kconfig
    @@ -1957,6 +1957,7 @@ config INTEL_TDX_HOST
    depends on CPU_SUP_INTEL
    depends on X86_64
    depends on KVM_INTEL
    + depends on X86_X2APIC
    help
    Intel Trust Domain Extensions (TDX) protects guest VMs from malicious
    host and certain physical attacks. This option enables necessary TDX
    --
    2.40.1
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