From: "H. Peter Anvin" <hpa@zytor.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
WANG Chao <chaowang@redhat.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 3/4] x86, kdump: Change crashkernel_high/low= to crashkernel=;high/low
Date: Tue, 09 Apr 2013 13:33:37 -0700 [thread overview]
Message-ID: <51647B21.6070402@zytor.com> (raw)
In-Reply-To: <20130409202948.GQ6320@redhat.com>
On 04/09/2013 01:29 PM, Vivek Goyal wrote:
> On Tue, Apr 09, 2013 at 01:24:46PM -0700, H. Peter Anvin wrote:
>> On 04/09/2013 01:05 PM, Yinghai Lu wrote:
>>>>
>>>> So crashkernel=X@Y;high is a valid syntax? Looks like we will reserve
>>>> X amount of RAM at base Y and ignore "high" or "low".
>>>
>>> yes, we should reject them.
>>>
>>
>> What if there isn't X amount of RAM available at base Y?
>
> We don't reserve anything.
>
> In this context crashkernel=X@Y,high is invalid syntax and should probably
> be ignored by parser. The very fact user specified the offset, high or
> low option does not carry any meaning.
>
> crashkernel=X,high is valid though.
>
Yes, if the offset being invalid is an error, that is the right
behavior, I would think.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
prev parent reply other threads:[~2013-04-09 20:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-04 22:16 [PATCH -v3 0/4] x86, kdump: Fix crashkernel high with old kexec-tools Yinghai Lu
2013-04-04 22:16 ` [PATCH v3 1/4] x86, kdump: Set crashkernel_low automatically Yinghai Lu
2013-04-08 7:09 ` Dave Young
2013-04-08 18:37 ` Yinghai Lu
2013-04-09 3:25 ` Dave Young
2013-04-09 3:37 ` Yinghai Lu
2013-04-04 22:16 ` [PATCH v3 4/4] kexec: use Crash kernel for Crash kernel low Yinghai Lu
2013-04-04 22:17 ` [PATCH v3 2/4] x86, kdump: Retore crashkernel= to allocate under 896M Yinghai Lu
2013-04-04 22:17 ` [PATCH v3 3/4] x86, kdump: Change crashkernel_high/low= to crashkernel=;high/low Yinghai Lu
2013-04-09 13:45 ` Vivek Goyal
2013-04-09 15:00 ` H. Peter Anvin
2013-04-09 16:47 ` Vivek Goyal
2013-04-09 16:49 ` H. Peter Anvin
2013-04-09 17:00 ` Vivek Goyal
2013-04-09 17:12 ` Vivek Goyal
2013-04-09 17:20 ` H. Peter Anvin
2013-04-09 20:05 ` Yinghai Lu
2013-04-09 20:24 ` H. Peter Anvin
2013-04-09 20:29 ` Vivek Goyal
2013-04-09 20:33 ` H. Peter Anvin [this message]
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