From mboxrd@z Thu Jan 1 00:00:00 1970 From: shuang.he@intel.com Subject: Re: [PATCH] drm/i915: Workaround to avoid lite restore with HEAD==TAIL Date: 13 Apr 2015 23:08:39 -0700 Message-ID: References: <1428658353-20692-1-git-send-email-michel.thierry@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 6AAA36E2A9 for ; Mon, 13 Apr 2015 23:08:41 -0700 (PDT) In-Reply-To: <1428658353-20692-1-git-send-email-michel.thierry@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: shuang.he@intel.com, ethan.gao@intel.com, intel-gfx@lists.freedesktop.org, michel.thierry@intel.com List-Id: intel-gfx@lists.freedesktop.org VGVzdGVkLUJ5OiBJbnRlbCBHcmFwaGljcyBRQSBQUlRTIChQYXRjaCBSZWdyZXNzaW9uIFRlc3Qg U3lzdGVtIENvbnRhY3Q6IHNodWFuZy5oZUBpbnRlbC5jb20pClRhc2sgaWQ6IDYxNzEKLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLVN1bW1hcnktLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tClBsYXRmb3JtICAgICAgICAgIERlbHRhICAgICAgICAgIGRybS1p bnRlbC1uaWdodGx5ICAgICAgICAgIFNlcmllcyBBcHBsaWVkClBOViAgICAgICAgICAgICAgICAg LTMgICAgICAgICAgICAgIDI3MC8yNzAgICAgICAgICAgICAgIDI2Ny8yNzAKSUxLICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgIDMwMy8zMDMgICAgICAgICAgICAgIDMwMy8zMDMKU05C ICAgICAgICAgICAgICAgICAtMjEgICAgICAgICAgICAgIDMwNC8zMDQgICAgICAgICAgICAgIDI4 My8zMDQKSVZCICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIDMzNy8zMzcgICAgICAg ICAgICAgIDMzNy8zMzcKQllUICAgICAgICAgICAgICAgICAtMSAgICAgICAgICAgICAgMjg3LzI4 NyAgICAgICAgICAgICAgMjg2LzI4NwpIU1cgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgMzYxLzM2MSAgICAgICAgICAgICAgMzYxLzM2MQpCRFcgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgMzA5LzMwOSAgICAgICAgICAgICAgMzA5LzMwOQotLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tRGV0YWlsZWQtLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tClBsYXRmb3JtICBUZXN0ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBk cm0taW50ZWwtbmlnaHRseSAgICAgICAgICBTZXJpZXMgQXBwbGllZAoqUE5WICBpZ3RAZ2VtX2Zl bmNlX3RocmFzaEBiby13cml0ZS12ZXJpZnktbm9uZSAgICAgIFBBU1MoMikgICAgICBGQUlMKDEp UEFTUygxKQoqUE5WICBpZ3RAZ2VtX2ZlbmNlX3RocmFzaEBiby13cml0ZS12ZXJpZnktdGhyZWFk ZWQtbm9uZSAgICAgIFBBU1MoMykgICAgICBDUkFTSCgxKVBBU1MoMSkKIFBOViAgaWd0QGdlbV91 c2VycHRyX2JsaXRzQGNvaGVyZW5jeS1zeW5jICAgICAgQ1JBU0goNSlQQVNTKDMpICAgICAgQ1JB U0goMSlQQVNTKDEpCiBTTkIgIGlndEBrbXNfY3Vyc29yX2NyY0BjdXJzb3Itc2l6ZS1jaGFuZ2Ug ICAgICBOU1BUKDMpUEFTUygxKSAgICAgIE5TUFQoMikKIFNOQiAgaWd0QGttc19tbWlvX3ZzX2Nz X2ZsaXBAc2V0Y3J0Y192c19jc19mbGlwICAgICAgTlNQVCgzKVBBU1MoMSkgICAgICBOU1BUKDIp CiBTTkIgIGlndEBrbXNfbW1pb192c19jc19mbGlwQHNldHBsYW5lX3ZzX2NzX2ZsaXAgICAgICBO U1BUKDMpUEFTUygxKSAgICAgIE5TUFQoMikKIFNOQiAgaWd0QGttc19yb3RhdGlvbl9jcmNAcHJp bWFyeS1yb3RhdGlvbiAgICAgIE5TUFQoMylQQVNTKDEpICAgICAgTlNQVCgyKQogU05CICBpZ3RA a21zX3JvdGF0aW9uX2NyY0BzcHJpdGUtcm90YXRpb24gICAgICBOU1BUKDMpUEFTUygzKSAgICAg IE5TUFQoMikKIFNOQiAgaWd0QHBtX3JwbUBjdXJzb3IgICAgICBOU1BUKDMpUEFTUygxKSAgICAg IE5TUFQoMikKIFNOQiAgaWd0QHBtX3JwbUBjdXJzb3ItZHBtcyAgICAgIE5TUFQoMylQQVNTKDEp ICAgICAgTlNQVCgyKQogU05CICBpZ3RAcG1fcnBtQGRwbXMtbW9kZS11bnNldC1ub24tbHBzcCAg ICAgIE5TUFQoMylQQVNTKDEpICAgICAgTlNQVCgyKQogU05CICBpZ3RAcG1fcnBtQGRwbXMtbm9u LWxwc3AgICAgICBOU1BUKDMpUEFTUygxKSAgICAgIE5TUFQoMikKIFNOQiAgaWd0QHBtX3JwbUBk cm0tcmVzb3VyY2VzLWVxdWFsICAgICAgTlNQVCgzKVBBU1MoMSkgICAgICBOU1BUKDIpCiBTTkIg IGlndEBwbV9ycG1AZmVuY2VzICAgICAgTlNQVCgzKVBBU1MoMSkgICAgICBOU1BUKDIpCiBTTkIg IGlndEBwbV9ycG1AZmVuY2VzLWRwbXMgICAgICBOU1BUKDMpUEFTUygxKSAgICAgIE5TUFQoMikK IFNOQiAgaWd0QHBtX3JwbUBnZW0tZXhlY2J1ZiAgICAgIE5TUFQoMylQQVNTKDEpICAgICAgTlNQ VCgyKQogU05CICBpZ3RAcG1fcnBtQGdlbS1tbWFwLWNwdSAgICAgIE5TUFQoMylQQVNTKDEpICAg ICAgTlNQVCgyKQogU05CICBpZ3RAcG1fcnBtQGdlbS1tbWFwLWd0dCAgICAgIE5TUFQoMylQQVNT KDEpICAgICAgTlNQVCgyKQogU05CICBpZ3RAcG1fcnBtQGdlbS1wcmVhZCAgICAgIE5TUFQoMylQ QVNTKDEpICAgICAgTlNQVCgyKQogU05CICBpZ3RAcG1fcnBtQGkyYyAgICAgIE5TUFQoMylQQVNT KDEpICAgICAgTlNQVCgyKQogU05CICBpZ3RAcG1fcnBtQG1vZGVzZXQtbm9uLWxwc3AgICAgICBO U1BUKDMpUEFTUygxKSAgICAgIE5TUFQoMikKIFNOQiAgaWd0QHBtX3JwbUBtb2Rlc2V0LW5vbi1s cHNwLXN0cmVzcy1uby13YWl0ICAgICAgTlNQVCgzKVBBU1MoMSkgICAgICBOU1BUKDIpCiBTTkIg IGlndEBwbV9ycG1AcGNpLWQzLXN0YXRlICAgICAgTlNQVCgzKVBBU1MoMSkgICAgICBOU1BUKDIp CiBTTkIgIGlndEBwbV9ycG1AcnRlICAgICAgTlNQVCgzKVBBU1MoMSkgICAgICBOU1BUKDIpCipC WVQgIGlndEBnZW1fZXhlY19iYWRfZG9tYWluc0Bjb25mbGljdGluZy13cml0ZS1kb21haW4gICAg ICBQQVNTKDMpICAgICAgRkFJTCgxKVBBU1MoMSkKTm90ZTogWW91IG5lZWQgdG8gcGF5IG1vcmUg YXR0ZW50aW9uIHRvIGxpbmUgc3RhcnQgd2l0aCAnKicKX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhA bGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1h bi9saXN0aW5mby9pbnRlbC1nZngK