Merge tag 'x86_tdx_for_6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull Intel Trust Domain Extensions (TDX) updates from Dave Hansen:
 "Other than a minor fixup, the content here is to ensure that TDX
  guests never see virtualization exceptions (#VE's) that might be
  induced by the untrusted VMM.

  This is a highly desirable property. Without it, #VE exception
  handling would fall somewhere between NMIs, machine checks and total
  insanity. With it, #VE handling remains pretty mundane.

  Summary:

   - Fixup comment typo

   - Prevent unexpected #VE's from:
      - Hosts removing perfectly good guest mappings (SEPT_VE_DISABLE)
      - Excessive #VE notifications (NOTIFY_ENABLES) which are delivered
        via a #VE"

* tag 'x86_tdx_for_6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tdx: Do not corrupt frame-pointer in __tdx_hypercall()
  x86/tdx: Disable NOTIFY_ENABLES
  x86/tdx: Relax SEPT_VE_DISABLE check for debug TD
  x86/tdx: Use ReportFatalError to report missing SEPT_VE_DISABLE
  x86/tdx: Expand __tdx_hypercall() to handle more arguments
  x86/tdx: Refactor __tdx_hypercall() to allow pass down more arguments
  x86/tdx: Add more registers to struct tdx_hypercall_args
  x86/tdx: Fix typo in comment in __tdx_hypercall()

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/include/asm/shared/tdx.h b/arch/x86/include/asm/shared/tdx.h
index 559176887791..4a03993e0785 100644
--- a/arch/x86/include/asm/shared/tdx.h
+++ b/arch/x86/include/asm/shared/tdx.h
@@ -21,12 +21,18 @@
  * This is a software only structure and not part of the TDX module/VMM ABI.
  */
 struct tdx_hypercall_args {
+	u64 r8;
+	u64 r9;
 	u64 r10;
 	u64 r11;
 	u64 r12;
 	u64 r13;
 	u64 r14;
 	u64 r15;
+	u64 rdi;
+	u64 rsi;
+	u64 rbx;
+	u64 rdx;
 };
 
 /* Used to request services from the VMM */