[PATCH v3 08/12] ppc64/kexec_file: setup the stack for purgatory

[Thiago Jung Bauermann]

Hari Bathini <hbathini at linux.ibm.com> writes:

> To avoid any weird errors, the purgatory should run with its own
> stack. Set one up by adding the stack buffer to .data section of
> the purgatory. Also, setup opal base & entry values in r8 & r9
> registers to help early OPAL debugging.
>
> Signed-off-by: Hari Bathini <hbathini at linux.ibm.com>
> Tested-by: Pingfan Liu <piliu at redhat.com>

Reviewed-by: Thiago Jung Bauermann <bauerman at linux.ibm.com>

> ---
>
> v2 -> v3:
> * Unchanged. Added Tested-by tag from Pingfan.
>
> v1 -> v2:
> * Setting up opal base & entry values in r8 & r9 for early OPAL debug.
>
>
>  arch/powerpc/include/asm/kexec.h       |    4 ++++
>  arch/powerpc/kexec/file_load_64.c      |   29 +++++++++++++++++++++++++++++
>  arch/powerpc/purgatory/trampoline_64.S |   32 ++++++++++++++++++++++++++++++++
>  3 files changed, 65 insertions(+)
>

-- 
Thiago Jung Bauermann
IBM Linux Technology Center