On Thu, Apr 5, 2018 at 8:00 AM, Dan Williams <[email protected]> wrote:
> On Wed, Apr 4, 2018 at 11:45 PM, Nicholas Piggin <[email protected]> wrote:
[,,]
>> What's the problem with just counting bytes copied like usercopy --
>> why is that harder than cacheline accuracy?
>>
>>> I'd rather implement the existing interface and port/support the new
>>> interface
>>> as it becomes available
>>
>> Fair enough.
>
> I have patches already in progress to change the interface. My
> preference is to hold off on adding a new implementation that will
> need to be immediately reworked. When I say "immediate" I mean that
> should be able to post what I have for review within the next few
> days.
>
> Whether this is all too late for 4.17 is another question...
Here is the x86 version of a 'bytes remaining' memcpy_mcsafe() implemenation:
https://lists.01.org/pipermail/linux-nvdimm/2018-May/015548.html
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