diff options
| author | Andreas Schwab <[email protected]> | 2025-02-03 10:06:00 +0000 |
|---|---|---|
| committer | Palmer Dabbelt <[email protected]> | 2025-02-14 21:06:31 +0000 |
| commit | 599c44cd21f4967774e0acf58f734009be4aea9a (patch) | |
| tree | 31e4ad9896dbc9bbf3dde647801b53a9ca7db44c /net/switchdev/switchdev.c | |
| parent | riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg (diff) | |
| download | kernel-599c44cd21f4967774e0acf58f734009be4aea9a.tar.gz kernel-599c44cd21f4967774e0acf58f734009be4aea9a.zip | |
riscv/futex: sign extend compare value in atomic cmpxchg
Make sure the compare value in the lr/sc loop is sign extended to match
what lr.w does. Fortunately, due to the compiler keeping the register
contents sign extended anyway the lack of the explicit extension didn't
result in wrong code so far, but this cannot be relied upon.
Fixes: b90edb33010b ("RISC-V: Add futex support.")
Signed-off-by: Andreas Schwab <[email protected]>
Reviewed-by: Alexandre Ghiti <[email protected]>
Reviewed-by: Björn Töpel <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions