KVM: VMX: Clean up and macrofy x86_ops

Eliminate a lot of stub definitions by using macros to define the TDX vs
non-TDX versions of various x86_ops. Moving the x86_ops wrappers under
CONFIG_KVM_INTEL_TDX also allows nearly all of vmx/main.c to go under a
single #ifdef, eliminating trampolines in the generated code, and almost
all of the stubs.

For example, with CONFIG_KVM_INTEL_TDX=n, before this cleanup,
vt_refresh_apicv_exec_ctrl() would produce:

0000000000036490 <vt_refresh_apicv_exec_ctrl>:
   36490:       f3 0f 1e fa             endbr64
   36494:       e8 00 00 00 00          call   36499 <vt_refresh_apicv_exec_ctrl+0x9>
                        36495: R_X86_64_PLT32   __fentry__-0x4
   36499:       e9 00 00 00 00          jmp    3649e <vt_refresh_apicv_exec_ctrl+0xe>
                        3649a: R_X86_64_PLT32   vmx_refresh_apicv_exec_ctrl-0x4
   3649e:       66 90                   xchg   %ax,%ax

After this patch, this is completely eliminated.

Based on a patch by Sean Christopherson <[email protected]>

Link: https://lore.kernel.org/kvm/[email protected]/
Cc: Sean Christopherson <[email protected]>
Cc: Rick Edgecombe <[email protected]>
Signed-off-by: Vishal Verma <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sean Christopherson <[email protected]>

0 files changed, 0 insertions, 0 deletions