linux-kernel - Re: [Linux-nvdimm] [PATCH 03/21] nd_acpi: initial core implementation and nfit skeleton

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Message-ID: <CAPcyv4gLmXGEWHTOf1mZicWDoeV6os04Nq46e0pCAKNBRja96w@mail.gmail.com>
Date:	Tue, 28 Apr 2015 12:21:22 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	linux-nvdimm <linux-nvdimm@...1.01.org>,
	linux-acpi@...r.kernel.org,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Robert Moore <robert.moore@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Linux-nvdimm] [PATCH 03/21] nd_acpi: initial core implementation
 and nfit skeleton

On Tue, Apr 28, 2015 at 5:53 AM, Christoph Hellwig <hch@...radead.org> wrote:
> On Fri, Apr 17, 2015 at 09:35:30PM -0400, Dan Williams wrote:
>> new file mode 100644
>> index 000000000000..5fa74f124b3e
>> --- /dev/null
>> +++ b/drivers/block/nd/Kconfig
>> @@ -0,0 +1,44 @@
>> +config ND_ARCH_HAS_IOREMAP_CACHE
>> +     depends on (X86 || IA64 || ARM || ARM64 || SH || XTENSA)
>> +     def_bool y
>
> As mentioned before please either define this symbol in each
> arch Kconfig, or just ensure every architecture proides a stub.
>
> But more importantly it doesn't seem like you're actually using
> ioremap_cache anywhere.  Allowing a cached ioremap would be a very
> worthwile addition to the pmem drivers once we have the proper
> memcpy functions making it safe, and is one of the high priority
> todo items for the pmem driver.
>
>> +
>> +menuconfig NFIT_DEVICES
>> +     bool "NVDIMM (NFIT) Support"
>
> Please just call all the symbolc and file names nvdimm instead of nfit
> or nd to make eryones life simpler for the generic code.  Just use the
> EFI/ACPI terminology in those parts that actually parse those tables.

Done in v2.
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