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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: Brian Gerst <brgerst@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Acked-by: Thomas 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.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -572,6 +572,7 @@ END(irq_entries_start)
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/* 8(%rsp): ~(interrupt number) */
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ENTRY(interrupt_entry)
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UNWIND_HINT_FUNC
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ASM_CLAC
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cld
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testb $3, CS-ORIG_RAX+8(%rsp)
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@ -614,7 +615,6 @@ END(interrupt_entry)
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*/
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.p2align CONFIG_X86_L1_CACHE_SHIFT
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common_interrupt:
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ASM_CLAC
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addq $-0x80, (%rsp) /* Adjust vector to [-256, -1] range */
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call interrupt_entry
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UNWIND_HINT_REGS indirect=1
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@ -811,7 +811,6 @@ END(common_interrupt)
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.macro apicinterrupt3 num sym do_sym
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ENTRY(\sym)
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UNWIND_HINT_IRET_REGS
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ASM_CLAC
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pushq $~(\num)
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.Lcommon_\sym:
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call interrupt_entry
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