Commit b2855d8d authored by Dominik Brodowski's avatar Dominik Brodowski Committed by Ingo Molnar

x86/entry/64: Move ASM_CLAC to interrupt_entry()

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: default avatarBrian Gerst <brgerst@gmail.com>
Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: dan.j.williams@intel.com
Link: http://lkml.kernel.org/r/20180220210113.6725-6-linux@dominikbrodowski.netSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 3aa99fc3
...@@ -572,6 +572,7 @@ END(irq_entries_start) ...@@ -572,6 +572,7 @@ END(irq_entries_start)
/* 8(%rsp): ~(interrupt number) */ /* 8(%rsp): ~(interrupt number) */
ENTRY(interrupt_entry) ENTRY(interrupt_entry)
UNWIND_HINT_FUNC UNWIND_HINT_FUNC
ASM_CLAC
cld cld
testb $3, CS-ORIG_RAX+8(%rsp) testb $3, CS-ORIG_RAX+8(%rsp)
...@@ -614,7 +615,6 @@ END(interrupt_entry) ...@@ -614,7 +615,6 @@ END(interrupt_entry)
*/ */
.p2align CONFIG_X86_L1_CACHE_SHIFT .p2align CONFIG_X86_L1_CACHE_SHIFT
common_interrupt: common_interrupt:
ASM_CLAC
addq $-0x80, (%rsp) /* Adjust vector to [-256, -1] range */ addq $-0x80, (%rsp) /* Adjust vector to [-256, -1] range */
call interrupt_entry call interrupt_entry
UNWIND_HINT_REGS indirect=1 UNWIND_HINT_REGS indirect=1
...@@ -811,7 +811,6 @@ END(common_interrupt) ...@@ -811,7 +811,6 @@ END(common_interrupt)
.macro apicinterrupt3 num sym do_sym .macro apicinterrupt3 num sym do_sym
ENTRY(\sym) ENTRY(\sym)
UNWIND_HINT_IRET_REGS UNWIND_HINT_IRET_REGS
ASM_CLAC
pushq $~(\num) pushq $~(\num)
.Lcommon_\sym: .Lcommon_\sym:
call interrupt_entry call interrupt_entry
......
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