On Mon, Jul 22, 2019 at 2:00 AM Lukas Auer lukas.auer@aisec.fraunhofer.de wrote:
To support relocation of the stack and global data on RISC-V, the secondary harts must be notified of the change using IPIs. We can reuse the hart relocation code for this purpose. It uses global data to store the new stack pointer and global data pointer for the secondary harts. This means that we cannot update the global data pointer of the main hart in spl_relocate_stack_gd(), because the secondary harts have not yet been relocated at this point. It is updated after the secondary harts have been notified.
Signed-off-by: Lukas Auer lukas.auer@aisec.fraunhofer.de
arch/riscv/cpu/start.S | 35 ++++++++++++++++++++++++++++++++++- common/spl/spl.c | 2 +- 2 files changed, 35 insertions(+), 2 deletions(-)
Reviewed-by: Bin Meng bmeng.cn@gmail.com Tested-by: Bin Meng bmeng.cn@gmail.com