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From: David Vrabel <david.vrabel@citrix.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>,
	xen-devel@lists.xen.org, Keir Fraser <keir@xen.org>,
	Don Slutz <dslutz@verizon.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [PATCH 2/4] Add tools/tests/offline_module
Date: Thu, 12 Dec 2013 11:09:42 +0000	[thread overview]
Message-ID: <52A99976.2020505@citrix.com> (raw)
In-Reply-To: <1386842469.12610.38.camel@kazak.uk.xensource.com>

On 12/12/13 10:01, Ian Campbell wrote:
> On Wed, 2013-12-11 at 19:56 -0500, Don Slutz wrote:
>> From: Don Slutz <dslutz@verizon.com>
>>
>> This is a quick and dirty linux kernel module to offline some cpus
>> as far as Xen knows.
>>
>> This can be used to re-create the bug in hvm_save_one about
>> returning the wrong data.
> 
> Can this not be done via /sys/devices/system/cpu/cpu1/online etc?
> Documentation/cpu-hotplug.txt seems to suggest it can.

Yes it can.

echo 0 > /sys/devices/system/cpu/cpuN/online

And onlined again with 1.

David

  reply	other threads:[~2013-12-12 11:09 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-12  0:56 [BUGFIX][PATCH 0/4] hvm_save_one: return correct data Don Slutz
2013-12-12  0:56 ` [PATCH 1/4] tools/test: Add check-hvmctx Don Slutz
2013-12-12  0:56 ` [PATCH 2/4] Add tools/tests/offline_module Don Slutz
2013-12-12 10:01   ` Ian Campbell
2013-12-12 11:09     ` David Vrabel [this message]
2013-12-12 14:24       ` Don Slutz
2013-12-12 14:32         ` Don Slutz
2013-12-12  0:56 ` [BUGFIX][PATCH 3/4] hvm_save_one: return correct data Don Slutz
2013-12-13 14:20   ` Jan Beulich
2013-12-15  0:29     ` Don Slutz
2013-12-15 16:51       ` Andrew Cooper
2013-12-15 17:19         ` Don Slutz
2013-12-15 17:22           ` Andrew Cooper
2013-12-15 17:42             ` Don Slutz
2013-12-15 18:11               ` Andrew Cooper
2013-12-15 18:41                 ` Don Slutz
2013-12-15 19:06                   ` Andrew Cooper
2013-12-15 19:23                     ` Don Slutz
2013-12-16  8:17         ` Jan Beulich
2013-12-16 17:51           ` Don Slutz
2013-12-16 18:33             ` Andrew Cooper
2013-12-22 19:40               ` Don Slutz
2013-12-22 21:13                 ` Andrew Cooper
2014-01-07 15:55                 ` Keir Fraser
2013-12-17  8:20             ` Jan Beulich
2013-12-17 10:40               ` Andrew Cooper
2013-12-20  0:32                 ` Don Slutz
2013-12-20 13:31                   ` George Dunlap
2013-12-22 19:44                     ` Don Slutz
2013-12-17 15:58               ` Don Slutz
2013-12-12  0:56 ` [BUGFIX][PATCH 4/4] hvm_save_one: allow the 2nd instance to be fetched for PIC Don Slutz
2013-12-13 14:38   ` Jan Beulich
2013-12-15  1:38     ` Don Slutz
2013-12-16  8:22       ` Jan Beulich

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