[RFC PATCH v3 5/6] x86/entry/64: move ASM_CLAC to interrupt_entry

[Dominik Brodowski]

Moving ASM_CLAC to interrupt_entry means two instructions (addq / pushq
and call interrupt_entry) are not covered by it. However, it offers a
noticeable size reduction (-.2k):

   text    data     bss     dec     hex filename
  16882       0       0   16882    41f2 entry_64.o-orig
  16623       0       0   16623    40ef entry_64.o

Suggested-by: Brian Gerst <brge...@gmail.com>
Signed-off-by: Dominik Brodowski <li...@dominikbrodowski.net>
---
 arch/x86/entry/entry_64.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 8ea03cf94a2d..42a4b652469d 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -572,6 +572,7 @@ END(irq_entries_start)
 /* 8(%rsp): ~(interrupt number) */
 ENTRY(interrupt_entry)
        UNWIND_HINT_FUNC
+       ASM_CLAC
        cld
 
        testb   $3, CS-ORIG_RAX+8(%rsp)
@@ -614,7 +615,6 @@ END(interrupt_entry)
         */
        .p2align CONFIG_X86_L1_CACHE_SHIFT
 common_interrupt:
-       ASM_CLAC
        addq    $-0x80, (%rsp)                  /* Adjust vector to [-256, -1] 
range */
        call    interrupt_entry
        UNWIND_HINT_REGS indirect=1
@@ -811,7 +811,6 @@ END(common_interrupt)
 .macro apicinterrupt3 num sym do_sym
 ENTRY(\sym)
        UNWIND_HINT_IRET_REGS
-       ASM_CLAC
        pushq   $~(\num)
 .Lcommon_\sym:
        call    interrupt_entry
-- 
2.16.2