From: Linda Knippers <linda.knippers@hp.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org, mingo@redhat.com,
hpa@zytor.com
Subject: Re: [PATCH] arch/x86/mm/srat: Print non-volatile flag in SRAT
Date: Tue, 1 Sep 2015 15:23:13 -0400 [thread overview]
Message-ID: <55E5FB21.5050406@hp.com> (raw)
In-Reply-To: <alpine.DEB.2.11.1509012116200.15006@nanos>
On 9/1/2015 3:17 PM, Thomas Gleixner wrote:
> On Tue, 1 Sep 2015, Linda Knippers wrote:
>> Nobody checks this flag but it would be interesting to know if it's being
>> set on any platforms.
>
> What you're omitting to explain, is WHY it would be interesting.
With the addition of NVDIMM support, a question came up as to whether
NVDIMM ranges should be in the SRAT with this bit set. I think the
consensus was no because the ranges are in the NFIT with proximity
domain information there.
ACPI is not clear on the meaning of this bit in the SRAT.
If someone is setting it, we might want to ask them what they expect
to happen with it.
Right now this bit is only printed if all the ACPI debug information is
turned on.
Sorry, I should have explained more.
-- ljk
>
> Thanks,
>
> tglx
>
next prev parent reply other threads:[~2015-09-01 19:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-01 16:21 [PATCH] arch/x86/mm/srat: Print non-volatile flag in SRAT Linda Knippers
2015-09-01 19:17 ` Thomas Gleixner
2015-09-01 19:23 ` Linda Knippers [this message]
2015-09-01 19:26 ` Thomas Gleixner
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