From mboxrd@z Thu Jan 1 00:00:00 1970 From: Meng Xu Subject: Re: Question about sharing spinlock_t among VMs in Xen Date: Mon, 13 Jun 2016 21:50:43 -0400 Message-ID: References: <575EFB59.1000202@oracle.com> <575F22D8.2010107@oracle.com> 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.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bCdV8-0000IY-Ra for xen-devel@lists.xenproject.org; Tue, 14 Jun 2016 01:50:46 +0000 Received: by mail-vk0-f67.google.com with SMTP id t7so23447362vkf.2 for ; Mon, 13 Jun 2016 18:50:45 -0700 (PDT) In-Reply-To: <575F22D8.2010107@oracle.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Boris Ostrovsky Cc: "xen-devel@lists.xenproject.org" List-Id: xen-devel@lists.xenproject.org T24gTW9uLCBKdW4gMTMsIDIwMTYgYXQgNToxNyBQTSwgQm9yaXMgT3N0cm92c2t5Cjxib3Jpcy5v c3Ryb3Zza3lAb3JhY2xlLmNvbT4gd3JvdGU6Cj4gT24gMDYvMTMvMjAxNiAwNDo0NiBQTSwgTWVu ZyBYdSB3cm90ZToKPj4gT24gTW9uLCBKdW4gMTMsIDIwMTYgYXQgMjoyOCBQTSwgQm9yaXMgT3N0 cm92c2t5Cj4+IDxib3Jpcy5vc3Ryb3Zza3lAb3JhY2xlLmNvbT4gd3JvdGU6Cj4+PiBPbiAwNi8x My8yMDE2IDAxOjQzIFBNLCBNZW5nIFh1IHdyb3RlOgo+Pj4+IEhpLAo+Pj4+Cj4+Pj4gSSBoYXZl IGEgcXVpY2sgcXVlc3Rpb24gYWJvdXQgdXNpbmcgdGhlIExpbnV4IHNwaW5fbG9jaygpIGluIFhl bgo+Pj4+IGVudmlyb25tZW50IHRvIHByb3RlY3Qgc29tZSBob3N0LXdpZGUgc2hhcmVkIChtZW1v cnkpIHJlc291cmNlIGFtb25nCj4+Pj4gVk1zLgo+Pj4+Cj4+Pj4gKioqIFRoZSBxdWVzdGlvbiBp cyBhcyBmb2xsb3dzICoqKgo+Pj4+IFN1cHBvc2UgSSBoYXZlIHR3byBMaW51eCBWTXMgc2hhcmlu ZyB0aGUgc2FtZSBzcGlubG9ja190IGxvY2sgKHRocm91Z2gKPj4+PiB0aGUgc2hhcmluZyBtZW1v cnkpIG9uIHRoZSBzYW1lIGhvc3QuIFN1cHBvc2Ugd2UgaGF2ZSBvbmUgcHJvY2VzcyBpbgo+Pj4+ IGVhY2ggVk0uIEVhY2ggcHJvY2VzcyB1c2VzIHRoZSBsaW51eCBmdW5jdGlvbiBzcGluX2xvY2so JmxvY2spIFsxXSB0bwo+Pj4+IGdyYWIgJiByZWxlYXNlIHRoZSBsb2NrLgo+Pj4+IFdpbGwgdGhl c2UgdHdvIHByb2Nlc3NlcyBpbiB0aGUgdHdvIFZNcyBoYXZlIHJhY2Ugb24gdGhlIHNoYXJlZCBs b2NrPwo+Pj4gWW91IGNhbid0IGRvIHRoaXM6IGRlcGVuZGluZyBvbiB3aGljaCBMaW51eCB2ZXJz aW9uIHlvdSB1c2UgeW91IHdpbGwKPj4+IGZpbmQgdGhhdCBrZXJuZWwgdXNlcyB0aWNrZXRsb2Nr cyBvciBxbG9ja3MgbG9ja3Mgd2hpY2gga2VlcCB0cmFjayBvZgo+Pj4gd2hvIGlzIGhvbGRpbmcg dGhlIGxvY2sgKG9idmlvdXNseSB0aGlzIGluZm9ybWF0aW9uIGlzIGludGVybmFsIHRvIFZNKS4K Pj4gWWVzLCB3ZSBhcmUgdXNpbmcgdGhlIHRpY2tldGxvY2tzLiBXZSBleHBvc2UgdGhpcyBpbmZv cm1hdGlvbiB0byBvdGhlcgo+PiBWTXMgYXMgd2VsbC4gVGhhdCdzIHdoeSBJJ20gZ3Vlc3Npbmcg c29tZSBkYXRhIGNhbiBiZSBjb3JydXB0ZWQgZHVlIHRvCj4+IHJhY2VzIGFtb25nIFZNcyB0aGF0 IHNoYXJlIHRoZSBzYW1lIHRpY2tldGxvY2sgaW5mb3JtYXRpb24uCj4KPiBJIGRvbid0IHRoaW5r IGl0J3MgYSByYWNlIHRoYXQgaXMgdGhlIHByb2JsZW0uIEl0J3MgdGhhdCB3aGVuIGhvbGRlcgo+ IHJlbGVhc2VzIGEgbG9jayBpdCB3YW50cyB0byBraWNrIHRoZSB3YWl0ZXIuIEl0IGNhbid0IGtp Y2sgQ1BVIGluCj4gYW5vdGhlciBndWVzdCBhbmQgbW9zdCBsaWtlbHkga2lja3MgQ1BVIGZyb20g aXRzIG93biBndWVzdCAoYmVjYXVzZQo+IHRoYXQncyB3aGVyZSBpdCBhc3N1bWVzIHRoZSB3YWl0 ZXIgaXMpLgoKSSBzZWUuIFRoYW5rIHlvdSB2ZXJ5IG11Y2gsIEJvcmlzLCBmb3IgdGhlIGV4cGxh bmF0aW9uISBJIHJlYWxseQphcHByZWNpYXRlIGl0LiA6LSkKCkJlc3QgUmVnYXJkcywKCk1lbmcK Ci0tLS0tLS0tLS0tCk1lbmcgWHUKUGhEIFN0dWRlbnQgaW4gQ29tcHV0ZXIgYW5kIEluZm9ybWF0 aW9uIFNjaWVuY2UKVW5pdmVyc2l0eSBvZiBQZW5uc3lsdmFuaWEKaHR0cDovL3d3dy5jaXMudXBl bm4uZWR1L35tZW5neHUvCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0 dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=