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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] pvcalls-front: 64-bit align flags
From: Stefano Stabellini
> Sent: 27 February 2018 19:55
>
> We are using test_and_* operations on the status and flag fields of
> struct sock_mapping. However, these functions require the operand to be
> 64-bit aligned on arm64. Currently, only status is 64-bit aligned.
That sounds like a big accident just waiting to happen...
If the operand is required to be 64bit aligned why isn't it a type
that requires 64bit alignment?
> Make flags 64-bit aligned by introducing an explicit padding field.
At some point such padding will always go wrong...
David
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