From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f170.google.com (mail-ig0-f170.google.com [209.85.213.170]) by kanga.kvack.org (Postfix) with ESMTP id DB9266B003A for ; Fri, 10 Jan 2014 16:39:59 -0500 (EST) Received: by mail-ig0-f170.google.com with SMTP id k19so2222244igc.1 for ; Fri, 10 Jan 2014 13:39:59 -0800 (PST) Received: from g4t0017.houston.hp.com (g4t0017.houston.hp.com. [15.201.24.20]) by mx.google.com with ESMTPS id mv9si13771175icc.107.2014.01.10.13.39.58 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 10 Jan 2014 13:39:58 -0800 (PST) Message-ID: <1389389641.1792.173.camel@misato.fc.hp.com> Subject: Re: [PATCH 1/2] acpi memory hotplug, add parameter to disable memory hotplug [v2] From: Toshi Kani Date: Fri, 10 Jan 2014 14:34:01 -0700 In-Reply-To: <1389380698-19361-3-git-send-email-prarit@redhat.com> References: <1389380698-19361-1-git-send-email-prarit@redhat.com> <1389380698-19361-3-git-send-email-prarit@redhat.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Prarit Bhargava Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Len Brown , "Rafael J. Wysocki" , Linn Crosetto , Pekka Enberg , Yinghai Lu , Andrew Morton , Tang Chen , Wen Congyang , Vivek Goyal , kosaki.motohiro@gmail.com, dyoung@redhat.com, linux-acpi@vger.kernel.org, linux-mm@kvack.org On Fri, 2014-01-10 at 14:04 -0500, Prarit Bhargava wrote: : > --- > Documentation/kernel-parameters.txt | 3 +++ > drivers/acpi/acpi_memhotplug.c | 12 ++++++++++++ > 2 files changed, 15 insertions(+) > > diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt > index b9e9bd8..41374f9 100644 > --- a/Documentation/kernel-parameters.txt > +++ b/Documentation/kernel-parameters.txt > @@ -2117,6 +2117,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. > > nomce [X86-32] Machine Check Exception > > + acpi_no_memhotplug [ACPI] Disable memory hotplug. Useful for kexec > + and kdump kernels. > + Please move it to where other acpi_xxx are described. For kdump kernel, this option will be used when memmap=exactmap is deprecated. IOW, it is not useful yet. Not sure what you mean by kexec kernel. Memory hotplug does not need to be disabled for kexec reboot. Thanks, -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org