From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yu Zhang Subject: Re: [PATCH v7 1/5] x86/ioreq server: Release the p2m lock after mmio is handled. Date: Wed, 8 Mar 2017 23:22:46 +0800 Message-ID: <58C021C6.80308@linux.intel.com> References: <1488979950-10872-1-git-send-email-yu.c.zhang@linux.intel.com> <1488979950-10872-2-git-send-email-yu.c.zhang@linux.intel.com> <76ac974773124daaabf32b7467cb0196@AMSPEX02CL03.citrite.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <76ac974773124daaabf32b7467cb0196@AMSPEX02CL03.citrite.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Paul Durrant , "xen-devel@lists.xen.org" Cc: "zhiyuan.lv@intel.com" List-Id: xen-devel@lists.xenproject.org CgpPbiAzLzgvMjAxNyAxMDowNiBQTSwgUGF1bCBEdXJyYW50IHdyb3RlOgo+PiAtLS0tLU9yaWdp bmFsIE1lc3NhZ2UtLS0tLQo+PiBGcm9tOiBYZW4tZGV2ZWwgW21haWx0bzp4ZW4tZGV2ZWwtYm91 bmNlc0BsaXN0cy54ZW4ub3JnXSBPbiBCZWhhbGYgT2YgWXUKPj4gWmhhbmcKPj4gU2VudDogMDgg TWFyY2ggMjAxNyAxMzozMgo+PiBUbzogeGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKPj4gQ2M6IHpo aXl1YW4ubHZAaW50ZWwuY29tCj4+IFN1YmplY3Q6IFtYZW4tZGV2ZWxdIFtQQVRDSCB2NyAxLzVd IHg4Ni9pb3JlcSBzZXJ2ZXI6IFJlbGVhc2UgdGhlIHAybSBsb2NrCj4+IGFmdGVyIG1taW8gaXMg aGFuZGxlZC4KPj4KPj4gUm91dGluZSBodm1lbXVsX2RvX2lvKCkgbWF5IG5lZWQgdG8gcGVlayB0 aGUgcDJtIHR5cGUgb2YgYSBnZm4gdG8KPj4gc2VsZWN0IHRoZSBpb3JlcSBzZXJ2ZXIuIEZvciBl eGFtcGxlLCBvcGVyYXRpb25zIG9uIGdmbnMgd2l0aAo+PiBwMm1faW9yZXFfc2VydmVyIHR5cGUg d2lsbCBiZSBkZWxpdmVyZWQgdG8gYSBjb3JyZXNwb25kaW5nIGlvcmVxCj4+IHNlcnZlciwgYW5k IHRoaXMgcmVxdWlyZXMgdGhhdCB0aGUgcDJtIHR5cGUgbm90IGJlIHN3aXRjaGVkIGJhY2sKPj4g dG8gcDJtX3JhbV9ydyBkdXJpbmcgdGhlIGVtdWxhdGlvbiBwcm9jZXNzLiBUbyBhdm9pZCB0aGlz IHJhY2UKPj4gY29uZGl0aW9uLCB3ZSBkZWxheSB0aGUgcmVsZWFzZSBvZiBwMm0gbG9jayBpbgo+ PiBodm1faGFwX25lc3RlZF9wYWdlX2ZhdWx0KCkKPj4gdW50aWwgbW1pbyBpcyBoYW5kbGVkLgo+ Pgo+PiBOb3RlOiBwcmV2aW91c2x5IGluIGh2bV9oYXBfbmVzdGVkX3BhZ2VfZmF1bHQoKSwgcHV0 X2dmbigpIHdhcyBtb3ZlZAo+PiBiZWZvcmUgdGhlIGhhbmRsaW5nIG9mIG1taW8sIGR1ZSB0byBh IGRlYWRsb2NrIHJpc2sgYmV0d2VlbiB0aGUgcDJtCj4+IGxvY2sgYW5kIHRoZSBldmVudCBsb2Nr KGluIGNvbW1pdCA3N2I4ZGZlKS4gTGF0ZXIsIGEgcGVyLWV2ZW50IGNoYW5uZWwKPj4gbG9jayB3 YXMgaW50cm9kdWNlZCBpbiBjb21taXQgZGU2YWNiNywgdG8gc2VuZCBldmVudHMuIFNvIHdlIGRv IG5vdAo+PiBuZWVkIHRvIHdvcnJ5IGFib3V0IHRoZSBkZWFkbG9jayBpc3N1ZS4KPj4KPj4gU2ln bmVkLW9mZi1ieTogWXUgWmhhbmcgPHl1LmMuemhhbmdAbGludXguaW50ZWwuY29tPgo+PiBSZXZp ZXdlZC1ieTogSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgo+PiAtLS0KPj4gQ2M6IFBh dWwgRHVycmFudCA8cGF1bC5kdXJyYW50QGNpdHJpeC5jb20+Cj4+IENjOiBKYW4gQmV1bGljaCA8 amJldWxpY2hAc3VzZS5jb20+Cj4+IENjOiBBbmRyZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0Bj aXRyaXguY29tPgo+IFlvdXIgY2MtcyBzZWVtIHRvIGhhdmUgYmVlbiBkcm9wcGVkIGJ5IHlvdXIg bWFpbGVyIChvciBhdCBsZWFzdCBJIGNhbid0IHNlZSB0aGVtIGluIHRoZSBtYWlsIGhlYWRlciku IFlvdSBtYXkgd2FudCB0byBzZW5kIHRoZXNlIGFnYWluIHNvIHRoYXQgcmVsZXZhbnQgZm9sa3Mg YWN0dWFsbHkgZ2V0IGNjLWVkLgoKVGhhbmtzIGZvciB5b3VyIHJlbWluZC4gTGV0IG1lIHRyeSBh Z2Fpbi4gVGhpcyBpcyBzdHJhbmdlIGJlY2F1c2UgSSBoYWQgCmNvbW1lbnRlZCBvdXQgc3VwcmVz cy1jYyBpbiBteSBnaXQgY29uZmlnLgpQbGVhc2UgaWdub3JlIHRoaXMgdGhyZWFkLCBhbmQgc29y cnkgZm9yIHRoZSBpbmNvbnZlbmllbmNlLiA6LSkKCll1Cj4gICAgUGF1bAo+Cj4+IC0tLQo+PiAg IHhlbi9hcmNoL3g4Ni9odm0vaHZtLmMgfCA4ICsrLS0tLS0tCj4+ICAgMSBmaWxlIGNoYW5nZWQs IDIgaW5zZXJ0aW9ucygrKSwgNiBkZWxldGlvbnMoLSkKPj4KPj4gZGlmZiAtLWdpdCBhL3hlbi9h cmNoL3g4Ni9odm0vaHZtLmMgYi94ZW4vYXJjaC94ODYvaHZtL2h2bS5jCj4+IGluZGV4IGNjZmFl NGYuLmE5ZGI3ZjcgMTAwNjQ0Cj4+IC0tLSBhL3hlbi9hcmNoL3g4Ni9odm0vaHZtLmMKPj4gKysr IGIveGVuL2FyY2gveDg2L2h2bS9odm0uYwo+PiBAQCAtMTg3MCwxOCArMTg3MCwxNCBAQCBpbnQg aHZtX2hhcF9uZXN0ZWRfcGFnZV9mYXVsdChwYWRkcl90IGdwYSwKPj4gdW5zaWduZWQgbG9uZyBn bGEsCj4+ICAgICAgICAgICAgKG5wZmVjLndyaXRlX2FjY2VzcyAmJgo+PiAgICAgICAgICAgICAo cDJtX2lzX2Rpc2NhcmRfd3JpdGUocDJtdCkgfHwgKHAybXQgPT0gcDJtX2lvcmVxX3NlcnZlcikp KSApCj4+ICAgICAgIHsKPj4gLSAgICAgICAgX19wdXRfZ2ZuKHAybSwgZ2ZuKTsKPj4gLSAgICAg ICAgaWYgKCBhcDJtX2FjdGl2ZSApCj4+IC0gICAgICAgICAgICBfX3B1dF9nZm4oaG9zdHAybSwg Z2ZuKTsKPj4gLQo+PiAgICAgICAgICAgcmMgPSAwOwo+PiAgICAgICAgICAgaWYgKCB1bmxpa2Vs eShpc19wdmhfZG9tYWluKGN1cnJkKSkgKQo+PiAtICAgICAgICAgICAgZ290byBvdXQ7Cj4+ICsg ICAgICAgICAgICBnb3RvIG91dF9wdXRfZ2ZuOwo+Pgo+PiAgICAgICAgICAgaWYgKCAhaGFuZGxl X21taW9fd2l0aF90cmFuc2xhdGlvbihnbGEsIGdwYSA+PiBQQUdFX1NISUZULCBucGZlYykgKQo+ PiAgICAgICAgICAgICAgIGh2bV9pbmplY3RfaHdfZXhjZXB0aW9uKFRSQVBfZ3BfZmF1bHQsIDAp Owo+PiAgICAgICAgICAgcmMgPSAxOwo+PiAtICAgICAgICBnb3RvIG91dDsKPj4gKyAgICAgICAg Z290byBvdXRfcHV0X2dmbjsKPj4gICAgICAgfQo+Pgo+PiAgICAgICAvKiBDaGVjayBpZiB0aGUg cGFnZSBoYXMgYmVlbiBwYWdlZCBvdXQgKi8KPj4gLS0KPj4gMS45LjEKPj4KPj4KPj4gX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KPj4gWGVuLWRldmVsIG1h aWxpbmcgbGlzdAo+PiBYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwo+PiBodHRwczovL2xpc3RzLnhl bi5vcmcveGVuLWRldmVsCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpo dHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==