Constant core::arch::aarch64::_TMFAILURE_NEST

pub const _TMFAILURE_NEST: u64 = _; // 2_097_152u64

🔬This is a nightly-only experimental API. (stdsimd #48556)

Available on AArch64 only.

由于超出了事务嵌套级别，事务中止了