> On Apr 10, 2022, at 3:12 AM, Pu Lehui <pulehui@xxxxxxxxxx> wrote: > > This patch implement more bpf atomic operations for RV64. > The added operations are shown below: > > atomic[64]_[fetch_]add > atomic[64]_[fetch_]and > atomic[64]_[fetch_]or > atomic[64]_xchg > atomic[64]_cmpxchg > > Since riscv specification does not provide AMO instruction for > CAS operation, we use lr/sc instruction for cmpxchg operation, > and AMO instructions for the rest ops. Tests "test_bpf.ko" and > "test_progs -t atomic" have passed, as well as "test_verifier" > with no new failure ceses. > > Signed-off-by: Pu Lehui <pulehui@xxxxxxxxxx> LGTM. Acked-by: Song Liu <songliubraving@xxxxxx>
