Re: [PATCH v2 5/7] riscv: Consolidate fences into AMOs for available_harts_lock

On Mon, Sep 14, 2020 at 10:23 PM Sean Anderson seanga2@gmail.com wrote:

We can reduce the number of instructions needed to use available_harts_lock by using the aq and rl suffixes for AMOs.

Signed-off-by: Sean Anderson seanga2@gmail.com

Changes in v2:

• Remove fences after amoswaps
• Reword commit message

arch/riscv/cpu/start.S | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)

Reviewed-by: Bin Meng bin.meng@windriver.com