3226aad81a
This completes the xchg implementation for sh architecture. Note: The llsc variant is tricky since this only supports 4 byte atomics, the existing implementation of 1 byte xchg is wrong: we need to do a 4 byte cmpxchg and retry if any bytes changed meanwhile. Write this in C for clarity. Suggested-by: Rich Felker <dalias@libc.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> |
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| .. | ||
| asm | ||
| cpu-common/cpu | ||
| cpu-sh2/cpu | ||
| cpu-sh2a/cpu | ||
| cpu-sh3/cpu | ||
| cpu-sh4/cpu | ||
| cpu-sh4a/cpu | ||
| cpu-sh5/cpu | ||
| mach-common/mach | ||
| mach-dreamcast/mach | ||
| mach-ecovec24/mach | ||
| mach-kfr2r09/mach | ||
| mach-landisk/mach | ||
| mach-migor/mach | ||
| mach-sdk7786/mach | ||
| mach-se/mach | ||
| mach-sh03/mach | ||
| mach-x3proto/mach | ||
| uapi/asm | ||