diff mbox series

[v15,03/23] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC

Message ID a829d4e801896b019423b092d360a2e0fbc35f17.1699527082.git.kai.huang@intel.com (mailing list archive)
State New, archived
Headers show
Series TDX host kernel support | expand

Commit Message

Huang, Kai Nov. 9, 2023, 11:55 a.m. UTC 
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>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3762f41bb092..eb6e63956d51 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -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