diff options
| author | Sean Anderson <seanga2@gmail.com> | 2020-09-21 07:51:36 -0400 |
|---|---|---|
| committer | Andes <uboot@andestech.com> | 2020-09-30 08:54:52 +0800 |
| commit | d4990a46485f2f6592ae29f2b822043dbdeae15d (patch) | |
| tree | cd415656cc2c7d527feae832c5026e4a23052ac4 /drivers/timer/sandbox_timer.c | |
| parent | c41045411bbb64eeda2d404b79723f8d2802351c (diff) | |
riscv: Match memory barriers between send_ipi_many and handle_ipi
Without a matching barrier on the write side, the barrier in handle_ipi
does nothing. It was entirely possible for the boot hart to write to addr,
arg0, and arg1 *after* sending the IPI, because there was no barrier on the
sending side.
Fixes: 90ae281437 ("riscv: add option to wait for ack from secondary harts in smp functions")
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Leo Liang <ycliang@andestech.com>
Diffstat (limited to 'drivers/timer/sandbox_timer.c')
0 files changed, 0 insertions, 0 deletions