linux-kernel - Re: [PATCH] nfit: skip region registration for incomplete control regions

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Message-ID: <1521748710.2693.233.camel@hpe.com>
Date:   Thu, 22 Mar 2018 19:58:42 +0000
From:   "Kani, Toshi" <toshi.kani@....com>
To:     "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH] nfit: skip region registration for incomplete control
 regions

On Wed, 2018-03-21 at 21:42 -0700, Dan Williams wrote:
> Per the ACPI specification the only functional purpose for a DIMM
> Control Region to be mapped into the system physical address space, from
> an OSPM perspective, is to support block-apertures. However, there are
> some BIOSen that publish DIMM Control Region SPA entries for pre-boot
> environment consumption.  Undo the kernel policy of generating disabled
> 'ndblk' regions when this configuration is detected.
> 
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>

The change looks good.

Reviewed-by: Toshi Kani <toshi.kani@....com>

Thanks!
-Toshi