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by pm215
3256 days ago
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For 64-bit ARM (AArch64), load-exclusive/store-exclusive and load-acquire/store-release require aligned addresses. (Seems reasonable to me, trying to handle atomic accesses to aligned data is no fun). You also get a fault for any kind of unaligned access to Device memory, but you're not going to have that unless you're the kernel, and unaligned accesses to hardware registers are definitely not going to work out very well... (The rules are all fairly clearly documented in the Architecture Reference Manual.) |
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