[PATCH][2.6-mm] 4/4 linker error (overlapping sections)

From: Zwane Mwaikambo (zwane_at_linuxpower.ca)
Date: 08/31/03

  • Next message: Benjamin Herrenschmidt: "Re: [2.6.0-test4] IDE power management" 
    Date:	Sun, 31 Aug 2003 03:21:04 -0400 (EDT)
To: Linux Kernel <linux-kernel@vger.kernel.org>

    I got this on a NUMAQ 32way/32G kernel build with an external patch, i
    had to bump the PAGE_SIZE multiple (which is currently 2) to fix it, but
    how does this patch look instead?

    ld: section __ex_table [022cd000 -> 022cd207] overlaps section .entry.text [022cb000 -> 022cdfdf]
    ld: section .rodata [022cd220 -> 02314f61] overlaps section .entry.text [022cb000 -> 022cdfdf]

    The resultant image is the same (checked with objdump -t before and
    after) and compiles with my patch too.

    02562000 g *ABS* 00000000 __entry_tramp_start
    0256373c g *ABS* 00000000 __entry_tramp_end
    02564000 g *ABS* 00000000 _etext
    02564000 l d __ex_table 00000000
    02564178 g *ABS* 00000000 __stop___ex_table
    02564000 g *ABS* 00000000 __start___ex_table

    Index: linux-2.6.0-test4-mm4/arch/i386/kernel/vmlinux.lds.S
    ===================================================================
    RCS file: /build/cvsroot/linux-2.6.0-test4-mm4/arch/i386/kernel/vmlinux.lds.S,v
    retrieving revision 1.2
    diff -u -p -B -r1.2 vmlinux.lds.S
    --- linux-2.6.0-test4-mm4/arch/i386/kernel/vmlinux.lds.S 31 Aug 2003 03:29:45 -0000 1.2
    +++ linux-2.6.0-test4-mm4/arch/i386/kernel/vmlinux.lds.S 31 Aug 2003 06:06:03 -0000
    @@ -29,7 +29,8 @@ SECTIONS
       __start___entry_text = .;
       .entry.text : AT (__entry_tramp_start) { *(.entry.text) }
       __entry_tramp_end = __entry_tramp_start + SIZEOF(.entry.text);
    - . = __entry_tramp_start + 2*PAGE_SIZE_asm;
    + . = __entry_tramp_end;
    + . = ALIGN(PAGE_SIZE_asm);
     #else
       .entry.text : { *(.entry.text) }
     #endif
    -
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