x86/entry/64: Remove 'interrupt' macro

It is now trivial to call interrupt_entry() and then the actual worker.
Therefore, remove the interrupt macro and open code it all.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
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: Brian Gerst <brgerst@gmail.com>
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: Peter Zijlstra <peterz@infradead.org>
Cc: dan.j.williams@intel.com
Link: http://lkml.kernel.org/r/20180220210113.6725-5-linux@dominikbrodowski.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index b45d766..8ea03cf 100644 (file)
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -608,14 +608,6 @@ ENTRY(interrupt_entry)
        ret
 END(interrupt_entry)
 
-/* 0(%rsp): ~(interrupt number) */
-       .macro interrupt func
-       call    interrupt_entry
-
-       UNWIND_HINT_REGS indirect=1
-       call    \func   /* rdi points to pt_regs */
-       .endm
-
        /*
         * The interrupt stubs push (~vector+0x80) onto the stack and
         * then jump to common_interrupt.
@@ -624,7 +616,9 @@ END(interrupt_entry)
 common_interrupt:
        ASM_CLAC
        addq    $-0x80, (%rsp)                  /* Adjust vector to [-256, -1] range */
-       interrupt do_IRQ
+       call    interrupt_entry
+       UNWIND_HINT_REGS indirect=1
+       call    do_IRQ  /* rdi points to pt_regs */
        /* 0(%rsp): old RSP */
 ret_from_intr:
        DISABLE_INTERRUPTS(CLBR_ANY)
@@ -820,7 +814,9 @@ ENTRY(\sym)
        ASM_CLAC
        pushq   $~(\num)
 .Lcommon_\sym:
-       interrupt \do_sym
+       call    interrupt_entry
+       UNWIND_HINT_REGS indirect=1
+       call    \do_sym /* rdi points to pt_regs */
        jmp     ret_from_intr
 END(\sym)
 .endm