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SubjectRe: [PATCH v18 6/7] crypto: caam: cleanup CONFIG_64BIT ifdefs when using io{read|write}64
On Tue, Jul 3, 2018 at 9:01 PM, Logan Gunthorpe <> wrote:
> On 03/07/18 11:36 AM, Andy Shevchenko wrote:
>>> This is now in linux-next as commit 46e4bf08f6388 and it breaks
>>> booting imx6 (32-bit ARM):

>>> Any ideas on how to fix this issue?
>> Oops, first of all the header should be hi-lo instead of lo-hi.
>> Does it fix it?
>> Otherwise I didn't (briefly) see what can be the issue.
> I had to dig to find this: but Horia had said[1] that the HW was
> specified to use lo-hi and I think we ended up changing to that for this
> commit based on his feedback. This is also mentioned in the commit message.

Apparently I missed that part of the discussion.

> Besides that, it looks like we are hitting an undefined instruction. So
> my best guess is that we are somehow now calling a proper 64bit read
> when we should be calling two 32-bit reads.

Which is a bit strange. For arm we have been using generic
definitions. Only very few architectures use own defined macros.

> Fabio, can you send your configuration?
> Thanks,
> Logan
> [1]

With Best Regards,
Andy Shevchenko

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