Re: [PATCH v14] x86, mce: Add memcpy_mcsafe()

From: Tony Luck
Date: Fri Mar 11 2016 - 17:10:25 EST

On Thu, Mar 10, 2016 at 11:37 AM, Luck, Tony <tony.luck@xxxxxxxxx> wrote:
>> But you return 0 == false for success and 1 == true for failure.
> -Tony

Options to fix this:
1) Just change the comments in the code.
This seems like it would confuse people as I thing most people
would expect the "true" return to mean the copy succeeded.
2) Reverse the return values.
Better that option 1 - but doesn't leave scope to return a count
if some future user does want to know where the copy failed.
3) Change the return type back from "bool" to "int"
0 == success, non-zero == fail (with option to put the non-copied
byte count in later).
4) Something else