diff mbox series

[v12,03/22] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC

Message ID c334b3aa9a4d7d4af8b59f92eba84d5548bbbc7a.1687784645.git.kai.huang@intel.com
State New
Headers
Series TDX host kernel support |

Commit Message

Kai Huang June 26, 2023, 2:12 p.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>
---

v11 -> v12:
 - Added Kirill's Reviewd-by.

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 mbox series

Patch

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