From: ebiederm@xmission.com (Eric W. Biederman)
To: Amerigo Wang <amwang@redhat.com>
Cc: linux-kernel@vger.kernel.org, tony.luck@intel.com,
linux-ia64@vger.kernel.org, Neil Horman <nhorman@redhat.com>,
akpm@linux-foundation.org, Ingo Molnar <mingo@elte.hu>,
Anton Vorontsov <avorontsov@ru.mvista.com>
Subject: Re: [Patch 0/7] Implement crashkernel=auto
Date: Wed, 05 Aug 2009 06:33:57 -0700 [thread overview]
Message-ID: <m1eirqtmey.fsf@fess.ebiederm.org> (raw)
In-Reply-To: <20090805112123.6552.73574.sendpatchset@localhost.localdomain> (Amerigo Wang's message of "Wed\, 5 Aug 2009 07\:19\:02 -0400")
Amerigo Wang <amwang@redhat.com> 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
next prev parent reply other threads:[~2009-08-05 13:34 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-05 11:19 [Patch 0/7] Implement crashkernel=auto Amerigo Wang
2009-08-05 11:19 ` [Patch 1/7] x86: add CONFIG_KEXEC_AUTO_RESERVE Amerigo Wang
2009-08-05 13:41 ` Neil Horman
2009-08-05 14:45 ` Andi Kleen
2009-08-05 20:07 ` Eric W. Biederman
2009-08-06 1:55 ` Amerigo Wang
2009-08-06 7:15 ` Andi Kleen
2009-08-06 7:44 ` Amerigo Wang
2009-08-06 7:56 ` Amerigo Wang
2009-08-05 11:19 ` [Patch 2/7] x86: implement crashkernel=auto Amerigo Wang
2009-08-05 13:43 ` Neil Horman
2009-08-06 1:45 ` Amerigo Wang
2009-08-05 22:51 ` Yu, Fenghua
2009-08-06 1:56 ` Amerigo Wang
2009-08-05 11:19 ` [Patch 3/7] ia64: add CONFIG_KEXEC_AUTO_RESERVE Amerigo Wang
2009-08-05 13:49 ` Neil Horman
2009-08-05 11:19 ` [Patch 4/7] ia64: implement crashkernel=auto Amerigo Wang
2009-08-05 13:46 ` Neil Horman
2009-08-05 11:19 ` [Patch 5/7] powerpc: add CONFIG_KEXEC_AUTO_RESERVE Amerigo Wang
2009-08-05 13:49 ` Neil Horman
2009-08-05 11:20 ` [Patch 6/7] powerpc: implement crashkernel=auto Amerigo Wang
2009-08-05 13:50 ` Neil Horman
2009-08-05 11:20 ` [Patch 7/7] doc: update the kdump document Amerigo Wang
2009-08-05 13:33 ` Eric W. Biederman [this message]
2009-08-05 14:04 ` [Patch 0/7] Implement crashkernel=auto Neil Horman
2009-08-05 22:57 ` Eric W. Biederman
2009-08-06 2:05 ` Amerigo Wang
2009-08-06 2:47 ` Eric W. Biederman
2009-08-06 3:39 ` Amerigo Wang
2009-08-06 3:51 ` Eric W. Biederman
2009-08-06 5:57 ` Amerigo Wang
2009-08-06 6:14 ` Eric W. Biederman
2009-08-06 6:37 ` Amerigo Wang
2009-08-06 8:35 ` Eric W. Biederman
2009-08-06 8:47 ` Eric W. Biederman
2009-08-06 9:04 ` Amerigo Wang
2009-08-07 19:13 ` Bernhard Walle
2009-08-06 9:11 ` Amerigo Wang
2009-08-07 19:50 ` Eric W. Biederman
2009-08-07 21:03 ` Andi Kleen
2009-08-07 21:26 ` Bernhard Walle
2009-08-07 22:06 ` Eric W. Biederman
2009-08-07 21:31 ` Bernhard Walle
2009-08-07 22:16 ` Eric W. Biederman
2009-08-10 3:11 ` Amerigo Wang
2009-08-06 1:39 ` Amerigo Wang
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