From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: Re: [BUG linux-4.9.x] xen hotplug cpu leads to 100% steal usage Date: Sat, 2 Mar 2019 00:43:47 +0100 (CET) Message-ID: References: <841bb9a9-1cba-483f-a353-1209684f7c74@default> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzron-00015E-7s for xen-devel@lists.xenproject.org; Fri, 01 Mar 2019 23:43:53 +0000 In-Reply-To: <841bb9a9-1cba-483f-a353-1209684f7c74@default> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Dongli Zhang Cc: jgross@suse.com, Herbert Van Den Bergh , sstabellini@kernel.org, sboyd@kernel.org, joe.jin@oracle.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, john.stultz@linaro.org, xen-devel@lists.xenproject.org, boris.ostrovsky@oracle.com List-Id: xen-devel@lists.xenproject.org T24gVGh1LCAyOCBGZWIgMjAxOSwgRG9uZ2xpIFpoYW5nIHdyb3RlOgo+IAo+IFRoZSByb290IGNh dXNlIGlzIHRoYXQgdGhlIHJldHVybiB0eXBlIG9mIGppZmZpZXNfdG9fdXNlY3MoKSBpcyAndW5z aWduZWQgaW50JywKPiBidXQgbm90ICd1bnNpZ25lZCBsb25nJy4gQXMgYSByZXN1bHQsIHRoZSBs ZWFkaW5nIDMyIGJpdHMgYXJlIGRpc2NhcmRlZC4KCkVycm0uIE5vLiBUaGUgcm9vdCBjYXVzZSBp cyB0aGF0IGppZmZpZXNfdG9fdXNlY3MoKSBpcyB1c2VkIGZvciB0aGF0IGluIHRoZQpmaXJzdCBw bGFjZS4gVGhlIGZ1bmN0aW9uIGhhcyBiZWVuIHRoYXQgd2F5IGZvcmV2ZXIgYW5kIGFsbCB1c2Fn ZSBzaXRlcwooZXhjZXB0IGEgYnJva2VuIGRldl9kZWJ1ZyBwcmludCBpbiBpbmZpbmliYW5kKSBm ZWVkIGRlbHRhIHZhbHVlcy4gWWVzLCBpdApjb3VsZCBoYXZlIGRvY3VtZW50YXRpb24uLi4uCgo+ IGppZmZpZXNfdG9fdXNlY3MoKSBpcyBpbmRpcmVjdGx5IHRyaWdnZXJlZCBieSBjcHV0aW1lX3Rv X25zZWNzKCkgYXQgbGluZSAyNjQuCj4gSWYgZ3Vlc3QgaXMgYWxyZWFkeSB1cCBmb3IgbG9uZyB0 aW1lLCB0aGUgaW5pdGlhbCBzdGVhbCB0aW1lIGZvciBuZXcgdmNwdSBtaWdodAo+IGJlIGxhcmdl IGFuZCB0aGUgbGVhZGluZyAzMiBiaXRzIG9mIGppZmZpZXNfdG9fdXNlY3MoKSB3b3VsZCBiZSBk aXNjYXJkZWQuCgo+IFNvIGZhciwgSSBoYXZlIHR3byBzb2x1dGlvbnM6Cj4gCj4gMS4gQ2hhbmdl IHRoZSByZXR1cm4gdHlwZSBmcm9tICd1bnNpZ25lZCBpbnQnIHRvICd1bnNpZ25lZCBsb25nJyBh cyBpbiBhYm92ZQo+IGxpbmsgYW5kIEkgYW0gYWZyYWlkIGl0IHdvdWxkIGJyaW5nIHNpZGUgZWZm ZWN0LiBUaGUgcmV0dXJuIHR5cGUgaW4gbGF0ZXN0Cj4gbWFpbmxpbmUga2VybmVsIGlzIHN0aWxs ICd1bnNpZ25lZCBpbnQnLgoKQ2hhbmdpbmcgaXQgdG8gdW5zaWduZWQgbG9uZyB3b3VsZCBqdXN0 IHNvbHZlIHRoZSBpc3N1ZSBmb3IgNjRiaXQuCgpUaGFua3MsCgoJdGdseAoKCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxp c3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVj dC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=