From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: Question about partitioning shared cache in Xen Date: Wed, 14 Jan 2015 12:20:20 +0000 Message-ID: <54B65F04.2080200@citrix.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1YBMw0-00073N-He for xen-devel@lists.xenproject.org; Wed, 14 Jan 2015 12:20:28 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Meng Xu , "xen-devel@lists.xenproject.org" List-Id: xen-devel@lists.xenproject.org T24gMTQvMDEvMTUgMDA6NDEsIE1lbmcgWHUgd3JvdGU6Cj4gSGksCj4KPiBbR29hbF0KPiBJIHdh bnQgdG8gaW52ZXN0aWdhdGUgdGhlIGltcGFjdCBvZiB0aGUgc2hhcmVkIGNhY2hlIG9uIHRoZQo+ IHBlcmZvcm1hbmNlIG9mIHdvcmtsb2FkIGluIGd1ZXN0IGRvbWFpbi4KPiBJIGFsc28gd2FudCB0 byBwYXJ0aXRpb24gdGhlIHNoYXJlZCBjYWNoZSB2aWEgcGFnZSBjb2xvcmluZyBtZWNoYW5pc20K PiBzbyB0aGF0IGd1ZXN0IGRvbWFpbnMgY2FuIHVzZSBkaWZmZXJlbnQgY2FjaGUgY29sb3JzIG9m IHNoYXJlZCBjYWNoZQo+IGFuZCB3aWxsIG5vdCBoYXZlIGludGVyZmVyZW5jZSBpbiB0aGUgc2hh cmVkIGNhY2hlLgo+Cj4gW01vdGl2YXRpb246IFdoeSBkbyBJIHdhbnQgdG8gcGFydGl0aW9uIHRo ZSBzaGFyZWQgY2FjaGU/XQo+IEJlY2F1c2UgdGhlIHNoYXJlZCBjYWNoZSBpcyBzaGFyZWQgYW1v bmcgYWxsIGd1ZXN0IGRvbWFpbnMgKEkgYXNzdW1lCj4gdGhlIG1hY2hpbmUgaGFzIG11bHRpY29y ZXMgc2hhcmluZyB0aGUgc2FtZSBMTEMuIEZvciBleGFtcGxlLCBJbnRlbChSKQo+IFhlb24oUikg Q1BVIEU1LTE2NTAgdjIgaGFzIDYgcGh5c2ljYWwgY29yZXMgc2hhcmluZyBhIDEyTUIgTDMgY2Fj aGUuKSwKPiB0aGUgd29ya2xvYWQgaW4gb25lIGRvbVUgY2FuIGludGVyZmVyZSBhbm90aGVyIGRv bVUncyBtZW1vcnktaW50ZW5zaXZlCj4gd29ya2xvYWQgb24gdGhlIHNhbWUgbWFjaGluZSB2aWEg c2hhcmVkIGNhY2hlLiBUaGlzIHNoYXJlZC1jYWNoZQo+IGludGVyZmVyZW5jZSBtYWtlcyB0aGUg ZXhlY3V0aW9uIHRpbWUgb2YgdGhlIHdvcmtsb2FkIGluIGEgZG9tVQo+IG5vbi1kZXRlcm1pbmlz dGljIGFuZCBpbmNyZWFzZSBhIGxvdC4gKElmIHdlIGFzc3VtZSB0aGUgd29yc3QgY2FzZSwKPiB0 aGUgd29yc3QtY2FzZSBleGVjdXRpb24gdGltZSBvZiB0aGUgd29ya2xvYWQgd2lsbCBiZSB0b28K PiBwZXNzaW1pc3RpYy4pIEEgc3RhYmxlIGV4ZWN1dGlvbiB0aW1lIGlzIHZlcnkgaW1wb3J0YW50 IGluIHJlYWwtdGltZQo+IGNvbXB1dGF0aW9uIHdoZW4gdGhlIHJlYWwtdGltZSBwcm9ncmFtLCBs aWtlIHRoZSBjb250cm9sIHByb2dyYW0gb24KPiBhdXRvbW9iaWxlLCBoYXZlIHRvIGdlbmVyYXRl IHRoZSByZXN1bHQgd2l0aGluIGEgZGVhZGxpbmUuCj4KPiBJIGRpZCBzb21lIHF1aWNrIG1lYXN1 cmVtZW50cyB0byBzaG93IGhvdyBzaGFyZWQgY2FjaGUgY2FuIGJlIHVzZWQgYnkKPiBhIGhvbGlz dGljIGRvbWFpbiB0byBpbnRlcmZlcmUgdGhlIGV4ZWN1dGlvbiB0aW1lIG9mIGFub3RoZXIgZG9t YWluJ3MKPiB3b3JrbG9hZC4gSSBwaW4gdGhlIFZDUFVzIG9mIHR3byBkb21haW5zIHRvIGRpZmZl cmVudCBwaHlzaWNhbCBjb3Jlcwo+IGFuZCB1c2Ugb25lIGRvbWFpbiB0byBwb2xsdXRlIHRoZSBz aGFyZWQgY2FjaGUuIFRoZSByZXN1bHQgc2hvd3MgdGhhdAo+IHRoZSBzaGFyZWQtY2FjaGUgaW50 ZXJmZXJlbmNlIGNhbiBtYWtlIHRoZSBleGVjdXRpb24gdGltZSBvZiBhbm90aGVyCj4gZG9tYWlu J3Mgd29ya2xvYWQgc2xvdyBkb3duIGJ5IDR4LiBUaGUgd2hvbGUgZXhwZXJpbWVudCByZXN1bHQg Y2FuIGJlCj4gZm91bmQgYXQgaHR0cHM6Ly9naXRodWIuY29tL1Blbm5QYW5kYS9jaXM2MDEvYmxv Yi9tYXN0ZXIvcHJvamVjdC9kYXRhL2JveHBsb3RfY2FjaGVfdjIucGRmCj4gIC4gKFRoZSB3b3Jr bG9hZCBvZiB0aGUgZmlndXJlIGlzIGEgcHJvZ3JhbSByZWFkaW5nIGEgbGFyZ2UgYXJyYXkuIEkK PiBydW4gdGhlIHByb2dyYW0gZm9yIDEwMCB0aW1lcyBhbmQgZHJhdyB0aGUgbGF0ZW5jeSBvZiBh Y2Nlc3NpbmcgdGhlCj4gYXJyYXkgaW4gYSBib3ggcGxvdC4gVGhlIGZpcnN0IGNvbHVtbiB3aXRo IG5hbWUgImFsb25l4oiSZDF2MSIgaXMgdGhlCj4gYm94cGxvdCBsYXRlbmN5IHdoZW4gdGhlIHBy b2dyYW0gaW4gZG9tMSBydW5zIGFsb25lLiBUaGUgZm91cnRoIGNvbHVtbgo+ICJkMXYxZDJ2MeKI knBpbmRpZmZjb3JlIiBpcyB0aGUgYm94cGxvdCBsYXRlbmN5IHdoZW4gdGhlIHByb2dyYW0gaW4g ZG9tMQo+IHJ1bnMgYWxvbmcgd2l0aCBhbm90aGVyIHByb2dyYW0gaW4gZG9tMiwgYW5kIHRoZXNl IHR3byBkb21haW5zIHVzZXMKPiBkaWZmZXJlbnQgY29yZXMuIGRvbTEgYW5kIGRvbTIgaGF2ZSAx IHZjcHUgd2l0aCBidWRnZXQgZXF1YWwgdG8KPiBwZXJpb2QuIFRoZSBzY2hlZHVsZXIgaXMgY3Jl ZGl0IHNjaGVkdWxlci4pCj4KPiBbSWRlYSBvZiBob3cgdG8gcGFydGl0aW9uIHRoZSBzaGFyZWQg Y2FjaGVdCj4gV2hlbiBhIFBWIGd1ZXN0IGRvbWFpbiBpcyBjcmVhdGVkLCBpdCB3aWxsIGNhbGwg eGNfZG9tX2Jvb3RfbWVtX2luaXQoKQo+IHRvIGFsbG9jYXRlIG1lbW9yeSBmb3IgdGhlIGRvbWFp biwgd2hpY2ggZmluYWxseSBjYWxscwo+IHhjX2RvbWFpbl9wb3B1bGF0ZV9waHlzbWFwX2V4YWN0 KCkgdG8gYWxsb2NhdGUgbWVtb3J5IHBhZ2VzIGZyb20KPiBkb21oZWFwIGluIFhlbi4KPiBUaGUg aWRlYSBvZiBwYXJ0aXRpb25pbmcgdGhlIHNoYXJlIGNhY2hlIGlzIGFzIGZvbGxvd3M6Cj4gMSkg eGwgdG9vbCBjaGFuZ2U6IEFkZCBhbiBvcHRpb24gaW4gZG9tYWluJ3MgY29uZmlndXJhdGlvbiBm aWxlIHdoaWNoCj4gc3BlY2lmaWVzIHdoaWNoIGNhY2hlIGNvbG9ycyB0aGlzIGRvbWFpbiBzaG91 bGQgdXNlLiAoSSBoYXZlIGRvbmUgdGhpcwo+IGFuZCB3aGVuIEkgdXNlIHhsIGNyZWF0ZSAtLWRy eS1ydW4sIEkgY2FuIHNlZSB0aGUgcGFyYW1ldGVycyBhcmUKPiBwYXJzZWQgdG8gdGhlIGJ1aWxk IGluZm9ybWF0aW9uLikKPiAyKSBoeXBlcnZpc29yIGNoYW5nZTogQWRkIGFub3RoZXIgaHlwZXJj YWxsCj4geGNfZG9tYWluX3BvcHVsYXRlX3BoeXNtYXBfZXhhY3RfY2EoKSB3aGljaCBoYXMgb25l IG1vcmUgcGFyYW1ldGVyLAo+IGkuZSwgdGhlIGNhY2hlIGNvbG9ycyB0aGlzIGRvbWFpbiBzaG91 bGQgdXNlLiBJIGFsc28gbmVlZCB0byByZXNlcnZlIGEKPiBtZW1vcnkgcG9vbCB3aGljaCBzb3J0 IHRoZSByZXNlcnZlZCBtZW1vcnkgcGFnZXMgYmFzZWQgb24gaXRzIGNhY2hlCj4gY29sb3IuCj4K PiBXaGVuIGEgUFYgZG9tYWluIGlzIGNyZWF0ZWQsIEkgY2FuIHNwZWNpZnkgdGhlIGNhY2hlIGNv bG9ycyBpdCB1c2VzLgo+IFRoZW4gdGhlIHhsIHRvb2wgd2lsbCBjYWxsIHRoZSB4Y19kb21haW5f cG9wdWxhdGVfcGh5c21hcF9leGFjdF9jYSgpCj4gdG8gb25seSBhbGxvY2F0ZSB0aGUgbWVtb3J5 IHBhZ2VzIHdpdGggdGhlIHNwZWNpZmllZCBjYWNoZSBjb2xvcnMgdG8KPiB0aGlzIGRvbWFpbi4K Pgo+IFtRdWljayBpbXBsZW1lbnRhdGlvbl0KPiBJIGF0dGFjaGVkIG15IHF1aWNrIGltcGxlbWVu dGF0aW9uIHBhdGNoIGF0IHRoZSBlbmQgb2YgdGhpcyBlbWFpbC4KPgo+IFtJc3N1ZXMgYW5kIFF1 ZXN0aW9uc10KPiBBZnRlciBJIGFwcGxpZWQgdGhlIHBhdGNoIHRvICBYZW4ncyBjb21taXQgcG9p bnQKPiAzNjE3NGFmM2ZiZWIxYjY2MmMwZWFkYmZhMTkzZTc3ZjY4Y2M5NTViIGFuZCBydW4gaXQg b24gbXkgbWFjaGluZSwKPiBkb20wIGNhbm5vdCBib290IHVwLjotKAo+IFRoZSBlcnJvciBtZXNz YWdlIGZyb20gZG9tMCBpczoKPiBbICAgIDAuMDAwMDAwXSBLZXJuZWwgcGFuaWMgLSBub3Qgc3lu Y2luZzogRmFpbGVkIHRvIGdldCBjb250aWd1b3VzCj4gbWVtb3J5IGZvciBETUEgZnJvbSBYZW4h Cj4KPiBbICAgIDAuMDAwMDAwXSBZb3UgZWl0aGVyOiBkb24ndCBoYXZlIHRoZSBwZXJtaXNzaW9u cywgZG8gbm90IGhhdmUKPiBlbm91Z2ggZnJlZSBtZW1vcnkgdW5kZXIgNEdCLCBvciB0aGUgaHlw ZXJ2aXNvciBtZW1vcnkgaXMgdG9vCj4gZnJhZ21lbnRlZCEgKHJjOi0xMikKPgo+IEkgdHJpZWQg dG8gcHJpbnQgZXZlcnkgbWVzc2FnZSBpbiB0aGUgZnVuY3Rpb24gSSB0b3VjaGVkIGluIG9yZGVy IHRvCj4gZmlndXJlIG91dCB3aGVyZSBnb2VzIHdyb25nIGJ1dCBmYWlsZWQuIDotKAo+IFRoZSB0 aGluZyBJIGNhbm5vdCB1bmRlcnN0YW5kIGlzIHRoYXQ6IE15IGltcGxlbWVudGF0aW9uIGhhdmVu J3QKPiByZXNlcnZlIGFueSAgbWVtb3J5IHBhZ2VzIGluIHRoZSBjYWNoZS1hd2FyZSBtZW1vcnkg cG9vbCBiZWZvcmUgdGhlCj4gc3lzdGVtIGJvb3RzIHVwLiBCYXNpY2FsbHksIGV2ZXJ5IGZ1bmN0 aW9uIEkgbW9kaWZpZWQgaGF2ZW4ndCBiZWVuCj4gY2FsbGVkIGJlZm9yZSB0aGUgc3lzdGVtIGJv b3RzIHVwLiBCdXQgdGhlIHN5c3RlbSBjcmFzaGVzLiA6LSggKFRoZQo+IHN5c3RlbSBjYW4gYm9v dCB1cCBhbmQgd29yayBwZXJmZWN0bHkgYmVmb3JlIGFwcGx5aW5nIG15IHBhdGNoLikKPgo+IEkg cmVhbGx5IGFwcHJlY2lhdGUgaXQgaWYgYW55IG9mIHlvdSBjb3VsZCBwb2ludCBvdXQgdGhlIHBh cnQgSSBtaXNzZWQKPiBvciBtaXN1bmRlcnN0b29kLiA6LSkKClRoZSBlcnJvciBtZXNzYWdlIGlz IHF1aXRlIGNsZWFyLiAgSSBwcmVzdW1lIHRoYXQgeW91ciBjYWNoZQpwYXJ0aXRpb25pbmcgYWxn b3JpdGhtIGhhcyBwcmV2ZW50ZWQgZG9tMCBmcm9tIGdldHRpbmcgYW55Cm1hY2hpbmUtY29udGln dW91cyBwYWdlcyBmb3IgRE1BLiAgVGhpcyBwcmV2ZW50cyBkb20wIGZyb20gdXNpbmcgYW55Cmhh cmR3YXJlLCBzdWNoIGFzIGl0cyBkaXNrcyBvciB0aGUgbmV0d29yay4KCldoYXQgSSBkb24ndCBz ZWUgaXMgaG93IHlvdSBwbGFuIHRvIGlzb2xhdGUgZGlmZmVyZW50IGNvbG91cnMgaW4gYQpzaGFy ZWQgY2FjaGUuICBJIGFtIGd1ZXNzaW5nIChzZWVpbmcgYXMgdGhlIHBhdGNoIGlzIGZ1bGwgb2Yg ZGVidWdnaW5nCmFuZCBoYXJkIHRvIGZvbGxvdykgdGhhdCB5b3UgYXJlIHVzaW5nIHRoZSBsb3cg b3JkZXIgYml0cyBpbiB0aGUKcGh5c2ljYWwgYWRkcmVzcyB0byBpZGVudGlmeSB0aGUgY29sb3Vy LCB3aGljaCB3aWxsIGluZGVlZCBwcmV2ZW50IGFueQpjb250aW51b3VzIGFsbG9jYXRpb25zIGZy b20gaGFwcGVuaW5nLiAgSXMgdGhpcyB3aGF0IHlvdSBhcmUgYXR0ZW1wdGluZwp0byBkbz8KCn5B bmRyZXcKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpY ZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0 cy54ZW4ub3JnL3hlbi1kZXZlbAo=