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    Subject[PATCH] x86_64: Overlapping program headers in physical addr space fix
    Hi Andi,

    Can you please apply following patch. Magnus verified that it fixed
    his problem.

    o A recent change to vmlinux.ld.S file broke kexec as now resulting vmlinux
    program headers are overlapping in physical address space.

    o Now all the vsyscall related sections are placed after data and after
    that mostly init data sections are placed. To avoid physical overlap
    among phdrs, there are three possible solutions.
    - Place vsyscall sections also in data phdrs instead of user
    - move vsyscal sections after init data in bss.
    - create another phdrs say data.init and move all the sections
    after vsyscall into this new phdr.

    o This patch implements the third solution.

    Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
    ---

    arch/x86_64/kernel/vmlinux.lds.S | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff -puN arch/x86_64/kernel/vmlinux.lds.S~x86_64-physical-addr-space-overlap-in-phdrs-fix arch/x86_64/kernel/vmlinux.lds.S
    --- linux-2.6.19-rc1-1M/arch/x86_64/kernel/vmlinux.lds.S~x86_64-physical-addr-space-overlap-in-phdrs-fix 2006-10-05 12:15:00.000000000 -0400
    +++ linux-2.6.19-rc1-1M-root/arch/x86_64/kernel/vmlinux.lds.S 2006-10-05 12:15:00.000000000 -0400
    @@ -17,6 +17,7 @@ PHDRS {
    text PT_LOAD FLAGS(5); /* R_E */
    data PT_LOAD FLAGS(7); /* RWE */
    user PT_LOAD FLAGS(7); /* RWE */
    + data.init PT_LOAD FLAGS(7); /* RWE */
    note PT_NOTE FLAGS(4); /* R__ */
    }
    SECTIONS
    @@ -131,7 +132,7 @@ SECTIONS
    . = ALIGN(8192); /* init_task */
    .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
    *(.data.init_task)
    - } :data
    + }:data.init

    . = ALIGN(4096);
    .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
    _
    -
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