x86: BUILD_IRQ say .text to avoid .data.percpu

When I edit the x86_64 Makefile to -fno-unit-at-a-time, bootup panics
on 0xCCs in IRQ0x3e_interrupt(): IRQ0x20_interrupt etc. have got linked
into .data.percpu.  Perhaps there are other ways of triggering that:
specify ".text" in the BUILD_IRQ() macro for safety.

I've been using -fno-unit-at-a-time (to lessen inlining, for easier
debugging) for a long time.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index 0373e88de95ab5be0760b9adb34ace988d253fcc..9414125f19ce9d14ca3a1e7c3b2e52d9b62f962e 100644 (file)
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -43,7 +43,7 @@
 
 #define BUILD_IRQ(nr)                          \
        asmlinkage void IRQ_NAME(nr);           \
-       asm("\n.p2align\n"                      \
+       asm("\n.text\n.p2align\n"               \
            "IRQ" #nr "_interrupt:\n\t"         \
            "push $~(" #nr ") ; "               \
            "jmp common_interrupt");