From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <1427412183.6468.148.camel@kernel.crashing.org> From: Benjamin Herrenschmidt Date: Fri, 27 Mar 2015 10:23:03 +1100 In-Reply-To: <20150326094330.GA15407@gmail.com> References: <20150325121118.GA2542@gmail.com> <20150325183316.GA9090@gmail.com> <20150325183647.GA9331@gmail.com> <1427317867.6468.87.camel@kernel.crashing.org> <20150326094330.GA15407@gmail.com> Mime-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: linuxppc-dev-bounces+geert=linux-m68k.org@lists.ozlabs.org Sender: "Linuxppc-dev" Subject: Re: [PATCH v3 2/2] powerpc/mm: Tracking vDSO remap To: Ingo Molnar Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Laurent Dufour , user-mode-linux-devel@lists.sourceforge.net, Arnd Bergmann , Jeff Dike , "H. Peter Anvin" , x86@kernel.org, linux-kernel@vger.kernel.org, criu@openvz.org, linux-mm@kvack.org, Ingo Molnar , Paul Mackerras , cov@codeaurora.org, user-mode-linux-user@lists.sourceforge.net, Richard Weinberger , Thomas Gleixner , Guan Xuetao , linuxppc-dev@lists.ozlabs.org List-ID: T24gVGh1LCAyMDE1LTAzLTI2IGF0IDEwOjQzICswMTAwLCBJbmdvIE1vbG5hciB3cm90ZToKPiAq IEJlbmphbWluIEhlcnJlbnNjaG1pZHQgPGJlbmhAa2VybmVsLmNyYXNoaW5nLm9yZz4gd3JvdGU6 Cj4gCj4gPiBPbiBXZWQsIDIwMTUtMDMtMjUgYXQgMTk6MzYgKzAxMDAsIEluZ28gTW9sbmFyIHdy b3RlOgo+ID4gPiAqIEluZ28gTW9sbmFyIDxtaW5nb0BrZXJuZWwub3JnPiB3cm90ZToKPiA+ID4g Cj4gPiA+ID4gPiArI2RlZmluZSBfX0hBVkVfQVJDSF9SRU1BUAo+ID4gPiA+ID4gK3N0YXRpYyBp bmxpbmUgdm9pZCBhcmNoX3JlbWFwKHN0cnVjdCBtbV9zdHJ1Y3QgKm1tLAo+ID4gPiA+ID4gKwkJ CSAgICAgIHVuc2lnbmVkIGxvbmcgb2xkX3N0YXJ0LCB1bnNpZ25lZCBsb25nIG9sZF9lbmQsCj4g PiA+ID4gPiArCQkJICAgICAgdW5zaWduZWQgbG9uZyBuZXdfc3RhcnQsIHVuc2lnbmVkIGxvbmcg bmV3X2VuZCkKPiA+ID4gPiA+ICt7Cj4gPiA+ID4gPiArCS8qCj4gPiA+ID4gPiArCSAqIG1yZW1h cCgpIGRvZXNuJ3QgYWxsb3cgbW92aW5nIG11bHRpcGxlIHZtYXMgc28gd2UgY2FuIGxpbWl0IHRo ZQo+ID4gPiA+ID4gKwkgKiBjaGVjayB0byBvbGRfc3RhcnQgPT0gdmRzb19iYXNlLgo+ID4gPiA+ ID4gKwkgKi8KPiA+ID4gPiA+ICsJaWYgKG9sZF9zdGFydCA9PSBtbS0+Y29udGV4dC52ZHNvX2Jh c2UpCj4gPiA+ID4gPiArCQltbS0+Y29udGV4dC52ZHNvX2Jhc2UgPSBuZXdfc3RhcnQ7Cj4gPiA+ ID4gPiArfQo+ID4gPiA+IAo+ID4gPiA+IG1yZW1hcCgpIGRvZXNuJ3QgYWxsb3cgbW92aW5nIG11 bHRpcGxlIHZtYXMsIGJ1dCBpdCBhbGxvd3MgdGhlIAo+ID4gPiA+IG1vdmVtZW50IG9mIG11bHRp LXBhZ2Ugdm1hcyBhbmQgaXQgYWxzbyBhbGxvd3MgcGFydGlhbCBtcmVtYXAoKXMsIAo+ID4gPiA+ IHdoZXJlIGl0IHdpbGwgc3BsaXQgdXAgYSB2bWEuCj4gPiA+IAo+ID4gPiBJLmUuIG1yZW1hcCgp IHN1cHBvcnRzIHRoZSBzaHJpbmtpbmcgKGFuZCBncm93aW5nKSBvZiB2bWFzLiBJbiB0aGF0IAo+ ID4gPiBjYXNlIG1yZW1hcCgpIHdpbGwgdW5tYXAgdGhlIGVuZCBvZiB0aGUgdm1hIGFuZCB3aWxs IHNocmluayB0aGUgCj4gPiA+IHJlbWFpbmluZyB2RFNPIHZtYS4KPiA+ID4gCj4gPiA+IERvZXNu J3QgdGhhdCByZXN1bHQgaW4gYSBub24td29ya2luZyB2RFNPIHRoYXQgc2hvdWxkIHplcm8gb3V0 IAo+ID4gPiB2ZHNvX2Jhc2U/Cj4gPiAKPiA+IFJpZ2h0LiBOb3cgd2UgY2FuJ3QgY29tcGxldGVs eSBwcmV2ZW50IHRoZSB1c2VyIGZyb20gc2hvb3RpbmcgaXRzZWxmIAo+ID4gaW4gdGhlIGZvb3Qg SSBzdXBwb3NlLCB0aG91Z2ggdGhlcmUgaXMgYSBsZWdpdCB1c2FnZSBzY2VuYXJpbyB3aGljaCAK PiA+IGlzIHRvIG1vdmUgdGhlIHZEU08gYXJvdW5kIHdoaWNoIGl0IHdvdWxkIGJlIG5pY2UgdG8g c3VwcG9ydC4gSSAKPiA+IHRoaW5rIGl0J3MgcmVhc29uYWJsZSB0byBwdXQgdGhlIG9udXMgb24g dGhlIHVzZXIgaGVyZSB0byBkbyB0aGUgCj4gPiByaWdodCB0aGluZy4KPiAKPiBJIGFyZ3VlIHdl IHNob3VsZCB1c2UgdGhlIHJpZ2h0IGNvbmRpdGlvbiB0byBjbGVhciB2ZHNvX2Jhc2U6IGlmIHRo ZSAKPiB2RFNPIGdldHMgYXQgbGVhc3QgcGFydGlhbGx5IHVubWFwcGVkLiBPdGhlcndpc2UgdGhl cmUncyBsaXR0bGUgcG9pbnQgCj4gaW4gdGhlIHdob2xlIHBhdGNoOiBlaXRoZXIgY29ycmVjdGx5 IHRyYWNrIHdoZXRoZXIgdGhlIHZEU08gaXMgT0ssIG9yIAo+IGRvbid0IC4uLgoKV2VsbCwgaWYg d2UgYXJlIGdvaW5nIHRvIGNsZWFyIGl0IGF0IGFsbCB5ZXMsIHdlIHNob3VsZCBwcm9iYWJseSBi ZSBhCmJpdCBzbWFydGVyIGFib3V0IGl0LiBNeSBwb2ludCBob3dldmVyIHdhcyB3ZSBwcm9iYWJs eSBkb24ndCBuZWVkIHRvIGJlCnN1cGVyIHJvYnVzdCBhYm91dCBkZWFsaW5nIHdpdGggYW55IGNy YXp5IHNjZW5hcmlvIHVzZXJzcGFjZSBtaWdodApjb25jZWl2ZS4KCj4gVGhlcmUncyBhbHNvIHRo ZSBxdWVzdGlvbiBvZiBtcHJvdGVjdCgpOiBjYW4gdXNlcnMgbXByb3RlY3QoKSB0aGUgdkRTTyAK PiBvbiBQb3dlclBDPwoKTm90aGluZyBwcmV2ZW50cyBpdC4gQnV0IGhlcmUgdG9vLCBJIHdvdWxk bid0IGJvdGhlci4gVGhlIHVzZXIgbWlnaHQgYmUKZG9pbmcgb24gcHVycG9zZSBleHBlY3Rpbmcg dG8gY2F0Y2ggdGhlIHJlc3VsdGluZyBzaWduYWwgZm9yIGV4YW1wbGUKKHRob3VnaCBhcmd1YWJs eSBhIHNpZ25hbCBmcm9tIGEgc2lncmV0dXJuIGZyYW1lIGlzIC4uLiBvZGQpLgoKQ2hlZXJzLApC ZW4uCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51 eHBwYy1kZXYgbWFpbGluZyBsaXN0CkxpbnV4cHBjLWRldkBsaXN0cy5vemxhYnMub3JnCmh0dHBz Oi8vbGlzdHMub3psYWJzLm9yZy9saXN0aW5mby9saW51eHBwYy1kZXY=