From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] xen/arm: p2m: Read *_mapped_gfn with the p2m lock taken Date: Thu, 28 Sep 2017 01:45:52 +0100 Message-ID: <1bc311ce-792c-e433-6cfb-47576de5280b@arm.com> References: <20170914153901.6750-1-julien.grall@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20170914153901.6750-1-julien.grall@arm.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: xen-devel@lists.xen.org Cc: bhupinder.thakur@linaro.org, sstabellini@kernel.org List-Id: xen-devel@lists.xenproject.org SGksCgpQaW5nPwoKQ2hlZXJzLAoKT24gMDkvMTQvMjAxNyAwNDozOSBQTSwgSnVsaWVuIEdyYWxs IHdyb3RlOgo+ICpfbWFwcGVkX2dmbiBhcmUgY3VycmVudGx5IHJlYWQgYmVmb3JlIGFjcXVpcmlu ZyB0aGUgbG9jay4gSG93ZXZlciwgdGhleQo+IG1heSBiZSBtb2RpZmllZCBieSB0aGUgcDJtIGNv ZGUgYmVmb3JlIHRoZSBsb2NrIHdhcyBhY3F1aXJlZC4gVGhpcyBtZWFucwo+IHdlIHdpbGwgdXNl IHRoZSB3cm9uZyB2YWx1ZXMuCj4gCj4gRml4IGl0IGJ5IG1vdmluZyB0aGUgcmVhZCBpbnNpZGUg dGhlIHNlY3Rpb24gcHJvdGVjdGVkIGJ5IHRoZSBwMm0gbG9jay4KPiAKPiBTaWduZWQtb2ZmLWJ5 OiBKdWxpZW4gR3JhbGwgPGp1bGllbi5ncmFsbEBhcm0uY29tPgo+IAo+IC0tLQo+ICAgICAgVGhp cyBwYXRjaCBzaG91bGQgYmUgYmFja3BvcnRlZCB0byBYZW4gNC45IGFuZCBYZW4gNC44Cj4gLS0t Cj4gICB4ZW4vYXJjaC9hcm0vcDJtLmMgfCAxNCArKysrKysrLS0tLS0tLQo+ICAgMSBmaWxlIGNo YW5nZWQsIDcgaW5zZXJ0aW9ucygrKSwgNyBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEv eGVuL2FyY2gvYXJtL3AybS5jIGIveGVuL2FyY2gvYXJtL3AybS5jCj4gaW5kZXggYzQ4NDQ2OWU2 Yy4uZDEyNjBkM2I0ZSAxMDA2NDQKPiAtLS0gYS94ZW4vYXJjaC9hcm0vcDJtLmMKPiArKysgYi94 ZW4vYXJjaC9hcm0vcDJtLmMKPiBAQCAtMTI5MiwxMyArMTI5MiwxMyBAQCBpbnQgcmVsaW5xdWlz aF9wMm1fbWFwcGluZyhzdHJ1Y3QgZG9tYWluICpkKQo+ICAgICAgIHAybV90eXBlX3QgdDsKPiAg ICAgICBpbnQgcmMgPSAwOwo+ICAgICAgIHVuc2lnbmVkIGludCBvcmRlcjsKPiAtCj4gLSAgICAv KiBDb252ZW5pZW5jZSBhbGlhcyAqLwo+IC0gICAgZ2ZuX3Qgc3RhcnQgPSBwMm0tPmxvd2VzdF9t YXBwZWRfZ2ZuOwo+IC0gICAgZ2ZuX3QgZW5kID0gcDJtLT5tYXhfbWFwcGVkX2dmbjsKPiArICAg IGdmbl90IHN0YXJ0LCBlbmQ7Cj4gICAKPiAgICAgICBwMm1fd3JpdGVfbG9jayhwMm0pOwo+ICAg Cj4gKyAgICBzdGFydCA9IHAybS0+bG93ZXN0X21hcHBlZF9nZm47Cj4gKyAgICBlbmQgPSBwMm0t Pm1heF9tYXBwZWRfZ2ZuOwo+ICsKPiAgICAgICBmb3IgKCA7IGdmbl94KHN0YXJ0KSA8IGdmbl94 KGVuZCk7Cj4gICAgICAgICAgICAgc3RhcnQgPSBnZm5fbmV4dF9ib3VuZGFyeShzdGFydCwgb3Jk ZXIpICkKPiAgICAgICB7Cj4gQEAgLTEzNTMsOSArMTM1Myw2IEBAIGludCBwMm1fY2FjaGVfZmx1 c2goc3RydWN0IGRvbWFpbiAqZCwgZ2ZuX3Qgc3RhcnQsIHVuc2lnbmVkIGxvbmcgbnIpCj4gICAg ICAgcDJtX3R5cGVfdCB0Owo+ICAgICAgIHVuc2lnbmVkIGludCBvcmRlcjsKPiAgIAo+IC0gICAg c3RhcnQgPSBnZm5fbWF4KHN0YXJ0LCBwMm0tPmxvd2VzdF9tYXBwZWRfZ2ZuKTsKPiAtICAgIGVu ZCA9IGdmbl9taW4oZW5kLCBwMm0tPm1heF9tYXBwZWRfZ2ZuKTsKPiAtCj4gICAgICAgLyoKPiAg ICAgICAgKiBUaGUgb3BlcmF0aW9uIGNhY2hlIGZsdXNoIHdpbGwgaW52YWxpZGF0ZSB0aGUgUkFN IGFzc2lnbmVkIHRvIHRoZQo+ICAgICAgICAqIGd1ZXN0IGluIGEgZ2l2ZW4gcmFuZ2UuIEl0IHdp bGwgbm90IG1vZGlmeSB0aGUgcGFnZSB0YWJsZSBhbmQKPiBAQCAtMTM2NCw2ICsxMzYxLDkgQEAg aW50IHAybV9jYWNoZV9mbHVzaChzdHJ1Y3QgZG9tYWluICpkLCBnZm5fdCBzdGFydCwgdW5zaWdu ZWQgbG9uZyBucikKPiAgICAgICAgKi8KPiAgICAgICBwMm1fcmVhZF9sb2NrKHAybSk7Cj4gICAK PiArICAgIHN0YXJ0ID0gZ2ZuX21heChzdGFydCwgcDJtLT5sb3dlc3RfbWFwcGVkX2dmbik7Cj4g KyAgICBlbmQgPSBnZm5fbWluKGVuZCwgcDJtLT5tYXhfbWFwcGVkX2dmbik7Cj4gKwo+ICAgICAg IGZvciAoIDsgZ2ZuX3goc3RhcnQpIDwgZ2ZuX3goZW5kKTsgc3RhcnQgPSBuZXh0X2dmbiApCj4g ICAgICAgewo+ICAgICAgICAgICBtZm5fdCBtZm4gPSBwMm1fZ2V0X2VudHJ5KHAybSwgc3RhcnQs ICZ0LCBOVUxMLCAmb3JkZXIpOwo+IAoKLS0gCkp1bGllbiBHcmFsbAoKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApY ZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==