Re: [PATCH v2] rust: page: add byte-wise atomic memory copy methods

[Andreas Hindborg]

"Boqun Feng" <boqun@xxxxxxxxxx> writes:

> On Thu, Feb 12, 2026 at 03:51:24PM +0100, Andreas Hindborg wrote:
>> When copying data from buffers that are mapped to user space, it is
>> impossible to guarantee absence of concurrent memory operations on those
>> buffers. Copying data to/from `Page` from/to these buffers would be
>> undefined behavior if no special considerations are made.
>>
>> Add methods on `Page` to read and write the contents using byte-wise atomic
>> operations.
>>
>
> Thank you, but in this patch we still have "the given IO memory" and use
> memcpy_{from,to}io() as the implementation, is that intended?

No that is a mistake. Please pretend it is regular `memcpy`. I'll send
v3 soon.

Best regards,
Andreas Hindborg