Reviewed-by: Pierrick Bouvier <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
---
linux-user/arm/cpu_loop.c | 19 +------------------
1 file changed, 1 insertion(+), 18 deletions(-)
diff --git a/linux-user/arm/cpu_loop.c b/linux-user/arm/cpu_loop.c
index cd89b7d6f5..40aefc4c1d 100644
--- a/linux-user/arm/cpu_loop.c
+++ b/linux-user/arm/cpu_loop.c
@@ -146,25 +146,8 @@ static void arm_kernel_cmpxchg64_helper(CPUARMState *env)
/* Swap if host != guest endianness, for the host cmpxchg below */
oldval = tswap64(oldval);
newval = tswap64(newval);
-
-#ifdef CONFIG_ATOMIC64
- val = qatomic_cmpxchg__nocheck(host_addr, oldval, newval);
+ val = qatomic_cmpxchg(host_addr, oldval, newval);
cpsr = (val == oldval) * CPSR_C;
-#else
- /*
- * This only works between threads, not between processes, but since
- * the host has no 64-bit cmpxchg, it is the best that we can do.
- */
- start_exclusive();
- val = *host_addr;
- if (val == oldval) {
- *host_addr = newval;
- cpsr = CPSR_C;
- } else {
- cpsr = 0;
- }
- end_exclusive();
-#endif
mmap_unlock();
cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr);
--
2.43.0
