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From: Yinghai Lu <yinghai@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
	"H. Peter Anvin" <hpa@zytor.com>
Cc: WANG Chao <chaowang@redhat.com>, Vivek Goyal <vgoyal@redhat.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 0/4] x86, kdump: Fix crashkernel high with old kexec-tools
Date: Tue,  2 Apr 2013 10:19:39 -0700	[thread overview]
Message-ID: <1364923183-316-1-git-send-email-yinghai@kernel.org> (raw)

Vivek found some problems with old kexec-tools.

We keep the old crashkernel=X to old behavoir, so it will not break
old tools.
Add crashkernel=X,high to support new kexec-tools that supports loading high.
when high is used, memblock will search from top to low.
if the allocated one is above 4G, kernel will try to auto allocate
72M under 4G for swiotlb.
user could crashkernel=Y,low to change 72M to other value.

Thanks

Yinghai

             reply	other threads:[~2013-04-02 17:20 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-02 17:19 Yinghai Lu [this message]
2013-04-02 17:19 ` [PATCH 1/4] x86, kdump: Set crashkernel_low automatically Yinghai Lu
2013-04-02 17:19 ` [PATCH 2/4] kexec: use Crash kernel for Crash kernel low Yinghai Lu
2013-04-02 17:19 ` [PATCH 3/4] x86, kdump: Retore crashkernel= to allocate low Yinghai Lu
2013-04-02 18:06   ` Vivek Goyal
2013-04-02 18:42     ` Yinghai Lu
2013-04-02 18:49       ` Yinghai Lu
2013-04-02 19:11         ` Vivek Goyal
2013-04-02 20:00           ` Yinghai Lu
2013-04-02 20:11             ` Vivek Goyal
2013-04-02 20:25               ` Vivek Goyal
2013-04-02 20:36               ` Yinghai Lu
2013-04-03 13:18                 ` Vivek Goyal
2013-04-03 17:12                   ` Yinghai Lu
2013-04-03 17:32                     ` Yinghai Lu
2013-04-03 17:47                       ` Vivek Goyal
2013-04-03 20:38                         ` Yinghai Lu
2013-04-03 21:00                           ` Vivek Goyal
2013-04-04  0:56                             ` Yinghai Lu
2013-04-04 13:41                               ` Vivek Goyal
2013-04-04 13:51                               ` Vivek Goyal
2013-04-03 17:36                     ` Vivek Goyal
2013-04-02 19:09       ` Vivek Goyal
2013-04-02 20:04         ` Yinghai Lu
2013-04-02 17:19 ` [PATCH] x86, kdump: Change crashkernel_high/low= to crashkernel=;high/low Yinghai Lu

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