[U-Boot] [PATCH v2 1/1] x86: put global data pointer into the .data section

Bin Meng bmeng.cn at gmail.com
Sat Oct 13 08:12:14 UTC 2018


On Sat, Oct 13, 2018 at 3:40 PM Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
>
> On x86_64 the field global_data_ptr is assigned before relocation. As
> sections for uninitialized global data (.bss) overlap with the relocation
> sections (.rela) this destroys the relocation table and leads to spurious
> errors.
>
> Initialization forces the global_data_ptr into a section for initialized
> global data (.data) which cannot overlap any .rela section.
>
> Fixes: a160092a610f ("x86: Support global_data on x86_64")
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
> ---
> v2
>         Use .data instead of .text section
> ---
>  arch/x86/cpu/x86_64/cpu.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
>

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
Tested-by: Bin Meng <bmeng.cn at gmail.com>


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