From: Prarit Bhargava <prarit@redhat.com>
To: Prarit Bhargava <prarit@redhat.com>
Cc: linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Len Brown <lenb@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linn Crosetto <linn@hp.com>, Pekka Enberg <penberg@kernel.org>,
Yinghai Lu <yinghai@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Toshi Kani <toshi.kani@hp.com>,
Tang Chen <tangchen@cn.fujitsu.com>,
Wen Congyang <wency@cn.fujitsu.com>,
Vivek Goyal <vgoyal@redhat.com>,
kosaki.motohiro@gmail.com, dyoung@redhat.com,
linux-acpi@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 2/2] x86, e820 disable ACPI Memory Hotplug if memory mapping is specified by user
Date: Fri, 10 Jan 2014 14:00:55 -0500 [thread overview]
Message-ID: <52D04367.1070107@redhat.com> (raw)
In-Reply-To: <1389379579-18614-3-git-send-email-prarit@redhat.com>
On 01/10/2014 01:46 PM, Prarit Bhargava wrote:
> kdump uses memmap=exactmap and mem=X values to configure the memory
> mapping for the kdump kernel. If memory is hotadded during the boot of
> the kdump kernel it is possible that the page tables for the new memory
> cause the kdump kernel to run out of memory.
>
> Since the user has specified a specific mapping ACPI Memory Hotplug should be
> disabled in this case.
>
Noticed a bug in this. Will repost a new version shortly.
P.
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prev parent reply other threads:[~2014-01-10 19:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 18:46 [PATCH 0/2] Add option to disable ACPI Memory Hotplug Prarit Bhargava
2014-01-10 18:46 ` [PATCH 1/2] acpi memory hotplug, add parameter to disable memory hotplug Prarit Bhargava
2014-01-10 18:46 ` [PATCH 2/2] x86, e820 disable ACPI Memory Hotplug if memory mapping is specified by user Prarit Bhargava
2014-01-10 19:00 ` Prarit Bhargava [this message]
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