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x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC

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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.

Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: https://lore.kernel.org/lkml/ba80b303-31bf-d44a-b05d-5c0f83038798@intel.com/
Link: https://lore.kernel.org/all/20231208170740.53979-3-dave.hansen%40intel.com
This commit is contained in:
Kai Huang 2023-12-08 09:07:23 -08:00 committed by Dave Hansen
parent d623704bb2
commit 3115cabd93
1 changed files with 1 additions and 0 deletions
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arch/x86/Kconfig
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@ -1970,6 +1970,7 @@ 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