From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: [PATCH V2] powerpc/infiniband: Use cache inhibitted and guarded mapping on powerpc Date: Fri, 22 Apr 2016 08:47:56 +1000 Message-ID: <1461278876.3135.18.camel@kernel.crashing.org> References: <1461139097-10213-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1461139097-10213-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+glppe-linuxppc-embedded-2=m.gmane.org@lists.ozlabs.org Sender: "Linuxppc-dev" To: "Aneesh Kumar K.V" , paulus@samba.org, mpe@ellerman.id.au Cc: linux-rdma@vger.kernel.org, Mike Marciniszyn , Doug Ledford , Sean Hefty , linuxppc-dev@lists.ozlabs.org, Hal Rosenstock List-Id: linux-rdma@vger.kernel.org T24gV2VkLCAyMDE2LTA0LTIwIGF0IDAzOjU4IC0wNDAwLCBBbmVlc2ggS3VtYXIgSy5WIHdyb3Rl Ogo+IFRoZSBkcml2ZXIgd2FzIHJlcXVlc3RpbmcgZm9yIGEgd3JpdGV0aHJvdWdoIG1hcHBpbmcu IEJ1dCB3aXRoIHRob3Nlcwo+IGZsYWdzIHdlIHdpbGwgZW5kIHVwIHdpdGggYSBTQU8gbWFwcGlu ZyBiZWNhdXNlIHdlIG5vdyBoYXZlIG1lbW9yeQo+IGNvbmhlcmVuY2UgYWx3YXlzIGVuYWJsZWQu IGllLCB0aGUgZXhpc3RpbmcgbWFwcGluZyB3aWxsIGVuZCB1cCB3aXRoCj4gYSBXSU1HIHZhbHVl IDBiMTExMCB3aGljaCBpcyBTdHJvbmcgQWNjZXNzIE9yZGVyLgo+IAo+IFVwZGF0ZSB0aGlzIHRv IHVzZSBjYWNoZSBpbmhpYml0dGVkIGd1YXJkZWQgbWFwcGluZwoKV2h5IGd1YXJkZWQgPyBJZiBp dCdzIHBlcmZvcm1hbmNlIHNlbnNpdGl2ZSAoYW5kIHRoZSBkcml2ZXIgaGFzCmFwcHJvcHJpYXRl IGJhcnJpZXJzIHdoZXJlIG5lZWRlZCksIHlvdSB3aWxsIGdldCB3cml0ZSBjb21iaW5pbmcKd2l0 aG91dCBndWFyZGVkLCB5b3Ugd29uJ3Qgd2l0aCBpdC4KCkNoZWVycywKQmVuLgoKPiBDYzogTWlr ZSBNYXJjaW5pc3p5biA8aW5maW5pcGF0aEBpbnRlbC5jb20+Cj4gQ2M6IERvdWcgTGVkZm9yZCA8 ZGxlZGZvcmRAcmVkaGF0LmNvbT4KPiBDYzogU2VhbiBIZWZ0eSA8c2Vhbi5oZWZ0eUBpbnRlbC5j b20+Cj4gQ2M6IEhhbCBSb3NlbnN0b2NrIDxoYWwucm9zZW5zdG9ja0BnbWFpbC5jb20+Cj4gQ2M6 IGxpbnV4LXJkbWFAdmdlci5rZXJuZWwub3JnCj4gU2lnbmVkLW9mZi1ieTogQW5lZXNoIEt1bWFy IEsuViA8YW5lZXNoLmt1bWFyQGxpbnV4LnZuZXQuaWJtLmNvbT4KPiAtLS0KPiBDaGFuZ2VzIGZy b20gdjE6Cj4gKiByZXNlbmQgYmVjYXVzZSBWMSBuZXZlciByZWFjaGVkIG1haWxpbmcgbGlzdC4K PiAKPiBOT1RFOiBUaGlzIGlzIG9ubHkgY29tcGlsZSB0ZXN0ZWQgYW5kIEkgYW0gYWxzbyBub3Qg c3VyZSB3aHkgcHBjNjQKPiBuZWVkcyBzcGVjaWFsIGhhbmRsaW5nLgo+IFdlIG5lZWQgdGhpcyBw YXRjaCBiZWNhdXNlIHRoZSBzZXJpZXMgYXQgaHR0cDovL21pZC5nbWFuZS5vcmcvMTQ2MDE4Mgo+ IDQ0NC0yNDY4LTEtZ2l0LXNlbmQtZW1haWwtYW5lZXNoLmt1bWFyQGxpbnV4LnZuZXQuaWJtLmNv bQo+IHdpbGwgZHJvcCBfUEFHRV9XUklURVRIUlUKPiAKPiDCoGRyaXZlcnMvaW5maW5pYmFuZC9o dy9xaWIvcWliX2ZpbGVfb3BzLmMgfCA1ICstLS0tCj4gwqBkcml2ZXJzL2luZmluaWJhbmQvaHcv cWliL3FpYl9wY2llLmPCoMKgwqDCoMKgfCA2IC0tLS0tLQo+IMKgMiBmaWxlcyBjaGFuZ2VkLCAx IGluc2VydGlvbigrKSwgMTAgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMv aW5maW5pYmFuZC9ody9xaWIvcWliX2ZpbGVfb3BzLmMKPiBiL2RyaXZlcnMvaW5maW5pYmFuZC9o dy9xaWIvcWliX2ZpbGVfb3BzLmMKPiBpbmRleCBlNDQ5ZTM5NDk2M2YuLmEzZDU5M2Y1NDZlYyAx MDA2NDQKPiAtLS0gYS9kcml2ZXJzL2luZmluaWJhbmQvaHcvcWliL3FpYl9maWxlX29wcy5jCj4g KysrIGIvZHJpdmVycy9pbmZpbmliYW5kL2h3L3FpYi9xaWJfZmlsZV9vcHMuYwo+IEBAIC04MjIs MTAgKzgyMiw3IEBAIHN0YXRpYyBpbnQgbW1hcF9waW9idWZzKHN0cnVjdCB2bV9hcmVhX3N0cnVj dAo+ICp2bWEsCj4gwqAJcGh5cyA9IGRkLT5waHlzYWRkciArIHBpb2J1ZnM7Cj4gwqAKPiDCoCNp ZiBkZWZpbmVkKF9fcG93ZXJwY19fKQo+IC0JLyogVGhlcmUgaXNuJ3QgYSBnZW5lcmljIHdheSB0 byBzcGVjaWZ5IHdyaXRldGhyb3VnaAo+IG1hcHBpbmdzICovCj4gLQlwZ3Byb3RfdmFsKHZtYS0+ dm1fcGFnZV9wcm90KSB8PSBfUEFHRV9OT19DQUNIRTsKPiAtCXBncHJvdF92YWwodm1hLT52bV9w YWdlX3Byb3QpIHw9IF9QQUdFX1dSSVRFVEhSVTsKPiAtCXBncHJvdF92YWwodm1hLT52bV9wYWdl X3Byb3QpICY9IH5fUEFHRV9HVUFSREVEOwo+ICsJdm1hLT52bV9wYWdlX3Byb3QgPSBwZ3Byb3Rf bm9uY2FjaGVkKHZtYS0+dm1fcGFnZV9wcm90KTsKPiDCoCNlbmRpZgo+IMKgCj4gwqAJLyoKPiBk aWZmIC0tZ2l0IGEvZHJpdmVycy9pbmZpbmliYW5kL2h3L3FpYi9xaWJfcGNpZS5jCj4gYi9kcml2 ZXJzL2luZmluaWJhbmQvaHcvcWliL3FpYl9wY2llLmMKPiBpbmRleCA0NzU4YTM4MDFhZTguLjZh YmUxYzYyMWFhNCAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2luZmluaWJhbmQvaHcvcWliL3FpYl9w Y2llLmMKPiArKysgYi9kcml2ZXJzL2luZmluaWJhbmQvaHcvcWliL3FpYl9wY2llLmMKPiBAQCAt MTQ0LDEzICsxNDQsNyBAQCBpbnQgcWliX3BjaWVfZGRpbml0KHN0cnVjdCBxaWJfZGV2ZGF0YSAq ZGQsCj4gc3RydWN0IHBjaV9kZXYgKnBkZXYsCj4gwqAJYWRkciA9IHBjaV9yZXNvdXJjZV9zdGFy dChwZGV2LCAwKTsKPiDCoAlsZW4gPSBwY2lfcmVzb3VyY2VfbGVuKHBkZXYsIDApOwo+IMKgCj4g LSNpZiBkZWZpbmVkKF9fcG93ZXJwY19fKQo+IC0JLyogVGhlcmUgaXNuJ3QgYSBnZW5lcmljIHdh eSB0byBzcGVjaWZ5IHdyaXRldGhyb3VnaAo+IG1hcHBpbmdzICovCj4gLQlkZC0+a3JlZ2Jhc2Ug PSBfX2lvcmVtYXAoYWRkciwgbGVuLCBfUEFHRV9OT19DQUNIRSB8Cj4gX1BBR0VfV1JJVEVUSFJV KTsKPiAtI2Vsc2UKPiDCoAlkZC0+a3JlZ2Jhc2UgPSBpb3JlbWFwX25vY2FjaGUoYWRkciwgbGVu KTsKPiAtI2VuZGlmCj4gLQo+IMKgCWlmICghZGQtPmtyZWdiYXNlKQo+IMKgCQlyZXR1cm4gLUVO T01FTTsKPiDCoApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpMaW51eHBwYy1kZXYgbWFpbGluZyBsaXN0CkxpbnV4cHBjLWRldkBsaXN0cy5vemxhYnMub3Jn Cmh0dHBzOi8vbGlzdHMub3psYWJzLm9yZy9saXN0aW5mby9saW51eHBwYy1kZXY=