From mboxrd@z Thu Jan 1 00:00:00 1970 From: ebiederm@xmission.com (Eric W. Biederman) Date: Wed, 05 Aug 2009 13:33:57 +0000 Subject: Re: [Patch 0/7] Implement crashkernel=auto Message-Id: List-Id: References: <20090805112123.6552.73574.sendpatchset@localhost.localdomain> In-Reply-To: <20090805112123.6552.73574.sendpatchset@localhost.localdomain> (Amerigo Wang's message of "Wed\, 5 Aug 2009 07\:19\:02 -0400") MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Amerigo Wang Cc: linux-kernel@vger.kernel.org, tony.luck@intel.com, linux-ia64@vger.kernel.org, Neil Horman , akpm@linux-foundation.org, Ingo Molnar , Anton Vorontsov Amerigo Wang writes: > This series of patch implements automatically reserved memory for crashkernel, > by introducing a new boot option "crashkernel=auto". This idea is from Neil. > > In case of breaking user-space applications, it modifies this boot option after > it decides how much memory should be reserved. > > On different arch, the threshold and reserved memory size is different. Please > refer patch 7/7 which contains an update for the documentation. > > Note: This patchset was only tested on x86_64 with differernt memory sizes. This seems like a silly hard code. Especially for a feature distros don't care enough about to implement a working initrd for. Has anyone bothered to justify those large amounts of memory? Where does the 128M go? Please pardon me for being a cynic but I don't see the command line option being the bottleneck for real users to make this work. Eric