linux-kernel - Re: [PATCH v2] Fix fTPM on AMD Zen+ CPUs

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Message-ID: <20190815204742.f37or63zwqjll22i@linux.intel.com>
Date:   Thu, 15 Aug 2019 23:47:42 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Vanya Lazeev <ivan.lazeev@...il.com>
Cc:     Jason Gunthorpe <jgg@...pe.ca>, Peter Huewe <peterhuewe@....de>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Fix fTPM on AMD Zen+ CPUs

On Tue, Aug 13, 2019 at 01:42:42AM +0300, Vanya Lazeev wrote:
> fTPM on Zen+ not only needs multiple mappings, it can also return
> inconsistent with ACPI values for range sizes (as for me and
> mikajhe from the bug thread), so results of crb_containing_resource
> are also used to fix the inconsistencies with crb_fixup_cmd_size.

How do you think that just by your code change, without any explanation
in the commit message, we could backtrack all this information?

/Jarko