Re: [PATCH v4] tpm_crb: fix fTPM on AMD Zen+ CPUs

[Jarkko Sakkinen]

On Mon, Sep 16, 2019 at 11:00:30PM +0300, Vanya Lazeev wrote:
> On Mon, Sep 16, 2019 at 08:51:30AM +0300, Jarkko Sakkinen wrote:
> > On Sat, Sep 14, 2019 at 08:17:44PM +0300, ivan.lazeev@xxxxxxxxx wrote:
> > > +	struct list_head acpi_resources, crb_resources;
> > 
> > Please do not create crb_resources. I said this already last time.
> 
> But then, if I'm not mistaken, it will be impossible to track pointers
> to multiple remaped regions. In this particular case, it
> doesn't matter, because both buffers are in different ACPI regions,
> and using acpi_resources only to fix buffer will be enough.
> However, this creates incosistency between single- and
> multiple-region cases: in the latter iobase field of struct crb_priv
> doesn't make any difference. Am I understanding the situation correctly?
> Will such fix be ok?

So why you need to track pointers other than in initialization as devm
will take care of freeing them. Just trying to understand the problem.

/Jarkko