Re: [Qemu-devel] [PATCH 01/11] target/sh4: Use cmpxchg for movco

[Richard Henderson]

On 07/05/2017 02:23 PM, Richard Henderson wrote:
> As for other targets, cmpxchg isn't quite right for ll/sc,
> suffering from an ABA race, but is sufficient to implement
> portable atomic operations.
>
> Signed-off-by: Richard Henderson<address@hidden>
> ---
>   target/sh4/cpu.h       |  3 ++-
>   target/sh4/translate.c | 56 +++++++++++++++++++++++++++++++++-----------------
>   2 files changed, 39 insertions(+), 20 deletions(-)

Note to self: missing reset of lock_addr across interrupt and priv change 
boundaries.


r~