diff options
| author | Sean Anderson <[email protected]> | 2020-09-21 07:51:36 -0400 |
|---|---|---|
| committer | Andes <[email protected]> | 2020-09-30 08:54:52 +0800 |
| commit | d4990a46485f2f6592ae29f2b822043dbdeae15d (patch) | |
| tree | cd415656cc2c7d527feae832c5026e4a23052ac4 /scripts/basic | |
| 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 <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Rick Chen <[email protected]>
Reviewed-by: Leo Liang <[email protected]>
Diffstat (limited to 'scripts/basic')
0 files changed, 0 insertions, 0 deletions