From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [RFC for-4.8 v2 7/7] xen/arm: Map mmio-sram nodes as normal un-cached rwx memory Date: Mon, 6 Jun 2016 19:08:03 +0100 Message-ID: <5755BC03.2060106@arm.com> References: <1464960552-6645-1-git-send-email-edgar.iglesias@gmail.com> <1464960552-6645-8-git-send-email-edgar.iglesias@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1464960552-6645-8-git-send-email-edgar.iglesias@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: "Edgar E. Iglesias" , xen-devel@lists.xen.org Cc: edgar.iglesias@xilinx.com, sstabellini@kernel.org List-Id: xen-devel@lists.xenproject.org SGkgRWRnYXIsCgpPbiAwMy8wNi8xNiAxNDoyOSwgRWRnYXIgRS4gSWdsZXNpYXMgd3JvdGU6Cj4g RnJvbTogIkVkZ2FyIEUuIElnbGVzaWFzIiA8ZWRnYXIuaWdsZXNpYXNAeGlsaW54LmNvbT4KPgo+ IE1hcCBtbWlvLXNyYW0gbm9kZXMgYXMgbm9ybWFsIHVuLWNhY2hlZCBNRU1PUlkgd2l0aCBSV1gg cGVybXMuCj4gSWYgdGhlIG5vZGUgaGFzIHNldCB0aGUgbm8tbWVtb3J5LXdjIHByb3BlcnR5LCB3 ZSBtYXAgaXQgYXMKPiBERVZJQ0UgUlcuCgpQbGVhc2UgYWRkIGEgcGF0aC9saW5rIHRvIHRoZSBi aW5kaW5ncyBpbiB0aGUgY29tbWl0IG1lc3NhZ2UuCgo+Cj4gU2lnbmVkLW9mZi1ieTogRWRnYXIg RS4gSWdsZXNpYXMgPGVkZ2FyLmlnbGVzaWFzQHhpbGlueC5jb20+Cj4gLS0tCj4gICB4ZW4vYXJj aC9hcm0vZG9tYWluX2J1aWxkLmMgfCAzNyArKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrCj4gICAxIGZpbGUgY2hhbmdlZCwgMzcgaW5zZXJ0aW9ucygrKQo+Cj4gZGlmZiAtLWdp dCBhL3hlbi9hcmNoL2FybS9kb21haW5fYnVpbGQuYyBiL3hlbi9hcmNoL2FybS9kb21haW5fYnVp bGQuYwo+IGluZGV4IDA2NGZlYjMuLjJhMjMxNmIgMTAwNjQ0Cj4gLS0tIGEveGVuL2FyY2gvYXJt L2RvbWFpbl9idWlsZC5jCj4gKysrIGIveGVuL2FyY2gvYXJtL2RvbWFpbl9idWlsZC5jCj4gQEAg LTU0LDYgKzU0LDMyIEBAIHN0cnVjdCBtYXBfcmFuZ2VfZGF0YQo+ICAgICAgIGNvbnN0IHN0cnVj dCBtYXBfYXR0ciAqYXR0cjsKPiAgIH07Cj4KPiArc3RhdGljIGNvbnN0IHN0cnVjdCBtYXBfYXR0 ciBtYXR0cl9kZXZpY2VfcncgX19pbml0Y29uc3QgPQo+ICt7Cj4gKyAgICAubWVtYXR0ciA9IE1B VFRSX0RFViwKPiArICAgIC5hY2Nlc3MgPSBwMm1fYWNjZXNzX3J3LAo+ICt9Owo+ICsKPiArc3Rh dGljIGNvbnN0IHN0cnVjdCBtYXBfYXR0ciBtYXR0cl9tZW1vcnlfbmNfcnd4IF9faW5pdGNvbnN0 ID0KPiArewo+ICsgICAgLm1lbWF0dHIgPSBNQVRUUl9NRU1fTkMsCj4gKyAgICAuYWNjZXNzID0g cDJtX2FjY2Vzc19yd3gsCj4gK307Cj4gKwo+ICtzdGF0aWMgY29uc3Qgc3RydWN0IGR0X2Rldmlj ZV9tYXRjaCBkZXZfbWFwX2F0dHJzW10gX19pbml0Y29uc3QgPQo+ICt7Cj4gKyAgICB7Cj4gKyAg ICAgICAgX19EVF9NQVRDSF9DT01QQVRJQkxFKCJtbWlvLXNyYW0iKSwKPiArICAgICAgICBfX0RU X01BVENIX1BST1BTKCJuby1tZW1vcnktd2MiKSwKPiArICAgICAgICAuZGF0YSA9ICZtYXR0cl9k ZXZpY2VfcncsCj4gKyAgICB9LAo+ICsgICAgewo+ICsgICAgICAgIF9fRFRfTUFUQ0hfQ09NUEFU SUJMRSgibW1pby1zcmFtIiksCj4gKyAgICAgICAgLmRhdGEgPSAmbWF0dHJfbWVtb3J5X25jX3J3 eCwKPiArICAgIH0sCj4gKyAgICB7IC8qIHNlbnRpbmVsICovIH0sCj4gK307Cj4gKwo+ICAgLy8j ZGVmaW5lIERFQlVHX0RUCj4KPiAgICNpZmRlZiBERUJVR19EVAo+IEBAIC0xMjAxLDYgKzEyMjcs MTYgQEAgc3RhdGljIGludCBoYW5kbGVfZGV2aWNlKHN0cnVjdCBkb21haW4gKmQsIHN0cnVjdCBk dF9kZXZpY2Vfbm9kZSAqZGV2LAo+ICAgICAgIHJldHVybiAwOwo+ICAgfQo+Cj4gK3N0YXRpYyBj b25zdCBzdHJ1Y3QgbWFwX2F0dHIgKmxvb2t1cF9tYXBfYXR0cihzdHJ1Y3QgZHRfZGV2aWNlX25v ZGUgKm5vZGUsCj4gKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg Y29uc3Qgc3RydWN0IG1hcF9hdHRyICpwYXJlbnRfYXR0cikKClRoZSBpbmRlbnRhdGlvbiBsb29r cyB3cm9uZyBoZXJlLgoKPiArewo+ICsgICAgY29uc3Qgc3RydWN0IGR0X2RldmljZV9tYXRjaCAq cjsKPiArCj4gKyAgICAvKiBTZWFyY2ggYW5kIGlmIG5vdGhpbmcgbWF0Y2hlcywgdXNlIHRoZSBw YXJlbnQncyBhdHRyaWJ1dGVzLiAgKi8KPiArICAgIHIgPSBkdF9tYXRjaF9ub2RlKGRldl9tYXBf YXR0cnMsIG5vZGUpOwoKTmV3bGluZSBoZXJlIHBsZWFzZS4KCj4gKyAgICByZXR1cm4gciA/IHIt PmRhdGEgOiBwYXJlbnRfYXR0cjsKCkkgd291bGQgZXhwbGFpbiB0aGlzIGJlaGF2aW9yIGluIHRo ZSBjb21taXQgbWVzc2FnZSBhbmQgZ2l2ZSBzb21lIApyYXRpb25hbGUgd2h5IGl0IGlzIGZpbmUg dG8gZG8gdGhhdC4KCj4gK30KPiArCj4gICBzdGF0aWMgaW50IGhhbmRsZV9ub2RlKHN0cnVjdCBk b21haW4gKmQsIHN0cnVjdCBrZXJuZWxfaW5mbyAqa2luZm8sCj4gICAgICAgICAgICAgICAgICAg ICAgICAgIHN0cnVjdCBkdF9kZXZpY2Vfbm9kZSAqbm9kZSwKPiAgICAgICAgICAgICAgICAgICAg ICAgICAgY29uc3Qgc3RydWN0IG1hcF9hdHRyICphdHRyKQo+IEBAIC0xMjkwLDYgKzEzMjYsNyBA QCBzdGF0aWMgaW50IGhhbmRsZV9ub2RlKHN0cnVjdCBkb21haW4gKmQsIHN0cnVjdCBrZXJuZWxf aW5mbyAqa2luZm8sCj4gICAgICAgICAgICAgICAgICAiV0FSTklORzogUGF0aCAlcyBpcyByZXNl cnZlZCwgc2tpcCB0aGUgbm9kZSBhcyB3ZSBtYXkgcmUtdXNlIHRoZSBwYXRoLlxuIiwKPiAgICAg ICAgICAgICAgICAgIHBhdGgpOwo+Cj4gKyAgICBhdHRyID0gbG9va3VwX21hcF9hdHRyKG5vZGUs IGF0dHIpOwo+ICAgICAgIHJlcyA9IGhhbmRsZV9kZXZpY2UoZCwgbm9kZSwgYXR0cik7Cj4gICAg ICAgaWYgKCByZXMpCj4gICAgICAgICAgIHJldHVybiByZXM7Cj4KClJlZ2FyZHMsCgotLSAKSnVs aWVuIEdyYWxsCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9s aXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=