Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks

[Dan Williams]

On Fri, Dec 11, 2015 at 2:17 PM, Luck, Tony <tony.luck@xxxxxxxxx> wrote:
>> Also, would it be more straightforward if the mcexception landing pad
>> looked up the va -> pa mapping by itself?  Or is that somehow not
>> reliable?
>
> If we did get all the above right, then we could have
> target use virt_to_phys() to convert to physical ...
> I don't see that this part would be a problem.

virt_to_phys() implies a linear address.  In the case of the use in
the pmem driver we'll be using an ioremap()'d address off somewherein
vmalloc space.
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