From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: Re: [PATCH] On unmap, flush IOMMU TLB and return correct size Date: Wed, 25 Sep 2013 16:40:13 -0600 Message-ID: <1380148813.5197.106.camel@ul30vt.home> References: <1379818740.2547.51.camel@shinybook.infradead.org> <20130925155459.GA20372@8bytes.org> <1380125113.28494.14.camel@i7.infradead.org> <1380130588.3030.342.camel@ul30vt.home> <1380135148.28494.26.camel@i7.infradead.org> <1380138243.5197.20.camel@ul30vt.home> <1380139886.28494.31.camel@i7.infradead.org> <1380145560.5197.94.camel@ul30vt.home> <1380147348.28494.37.camel@i7.infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1380147348.28494.37.camel-W2I5cNIroUsVm/YvaOjsyQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: David Woodhouse Cc: "Singh, Varinder" , "Sundaram, Rajesh" , "Kimmel, Jeff" , "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" , "Shankar, Hari" , "Spiller, John" List-Id: iommu@lists.linux-foundation.org T24gV2VkLCAyMDEzLTA5LTI1IGF0IDIzOjE1ICswMTAwLCBEYXZpZCBXb29kaG91c2Ugd3JvdGU6 Cj4gT24gV2VkLCAyMDEzLTA5LTI1IGF0IDE1OjQ2IC0wNjAwLCBBbGV4IFdpbGxpYW1zb24gd3Jv dGU6Cj4gPiBPbiBXZWQsIDIwMTMtMDktMjUgYXQgMjE6MTEgKzAxMDAsIERhdmlkIFdvb2Rob3Vz ZSB3cm90ZToKPiA+ID4gSSB3b3VsZG4ndCBib3RoZXIgdG8gZ28gbG9va2luZyBmb3Igb3Bwb3J0 dW5pdGllcyB0byB1c2Ugc3VwZXIgcGFnZXMgaWYKPiA+ID4gd2UgcmVtb3ZlIHRoZSBsYXN0IG5v bi1TUC1jYXBhYmxlIElPTU1VIGZyb20gdGhlIGRvbWFpbi4KPiA+IAo+ID4gSSBwcmVkaWN0IGJ1 Z3MgZ2V0dGluZyBmaWxlZCBpZiBhIGd1ZXN0IHNlZXMgYSBwZXJmb3JtYW5jZSBoaXQgYWZ0ZXIK PiA+IGFkZGluZyBhIGRldmljZSB0aGF0IGlzIG5vdCByZXN0b3JlZCB3aGVuIHRoZSBkZXZpY2Ug aXMgcmVtb3ZlZC4gIElmCj4gPiBvbmx5IHdlIGNvdWxkIGFzc3VtZSBhIHNpbWlsYXIgZmVhdHVy ZSBzZXQgYW1vbmcgSU9NTVVzIGluIGEgc3lzdGVtLgo+IAo+IE9rLCBmaW5lLiBBcyBsb25nIGFz IHlvdSBkb24ndCBoYXZlICp0b28qIG11Y2ggbWFwcGVkLCB0aGF0IHNob3VsZG4ndAo+IHN1Y2sg dG9vIG11Y2guCgpPZiBjb3Vyc2UgaWYgd2Uga25ldyB0aGlzIHdhcyBnb2luZyB0byBoYXBwZW4g aW4gYWR2YW5jZSBvZiBhdHRhY2hpbmcKdGhlIG5ldyBkZXZpY2UsIEkgd29uZGVyIGlmIHdlIG1p Z2h0IG9wdCB0byBtYW5hZ2UgaXQgd2l0aCBhIHNlcGFyYXRlCklPTU1VIGRvbWFpbi4KCj4gPiA+ ID4gPiBGV0lXIHdlIGN1cnJlbnRseSBzY3JldyB1cCB0aGUgaGFuZGxpbmcgb2YgY2FjaGUtY29o ZXJlbnQgdnMuCj4gPiA+ID4gPiBub24tY29oZXJlbnQgcGFnZSB0YWJsZXMgdG9vLiBUaGF0IG9u ZSB3YW50cyBhIHdiaW52ZCBzb21ld2hlcmUgd2hlbiB3ZQo+ID4gPiA+ID4gYWRkIGEgbm9uLWNv aGVyZW50IElPTU1VIHRvIHRoZSBkb21haW4uCj4gPiA+ID4gCj4gPiA+ID4gWW91J3JlIG5vdCBz ZWxsaW5nIHRoZSAidHJ1c3QgdGhlIElPTU1VIGRyaXZlciIgc3RvcnkgdmVyeSB3ZWxsIGhlcmUu Cj4gPiA+ID4gQ2FuIHdlIGFzc3VtZSB0aGF0IHRoZSBJT01NVV9DQUNIRSBmbGFnIChTTlApIGlz IGlnbm9yZWQgYXBwcm9wcmlhdGVseQo+ID4gPiA+IGJ5IG5vbi1jb2hlcmVudCBJT01NVXM/ICBJ cyB0aGVyZSBhbnkgZG93bnNpZGUgdG8gaWdub3JpbmcgaXQgYW5kIGFsd2F5cwo+ID4gPiA+IHNl dHRpbmcgU05QIGluIHRoZSBJT01NVSBwYWdlIHRhYmxlcz8gIEFNRCBJT01NVSBpZ25vcmVzIGl0 LCBidXQgaXQncwo+ID4gPiA+IGFsc28gYWx3YXlzIGNhY2hlIGNvaGVyZW50LiAgVGhhbmtzLAo+ ID4gPiAKPiA+ID4gU05QIGlzIGEgc2VwYXJhdGUgaXNzdWUuIEknbSBzcGVha2luZyBvZiBjYWNo ZSBjb2hlcmVuY3kgb2YgdGhlIGhhcmR3YXJlCj4gPiA+IHBhZ2UgdGFibGUgd2FsayDigJQgdGhl IGZlYXR1cmUgYml0IHRoYXQgYWxsIHRoZSBob3JyaWQgY2xmbHVzaCBjYWxscyBhcmUKPiA+ID4g cHJlZGljYXRlZCBvbi4KPiA+ID4gCj4gPiA+IEFnYWluLCB0aGlzIGlzIGp1c3QgYSBidWcuIFdl ICpzaG91bGQqIGJlIGdldHRpbmcgdGhpcyByaWdodCwgYnV0IGRvbid0Cj4gPiA+IHlldC4KPiA+ IAo+ID4gQW5kIGZvciBETUFfUFRFX1NOUD8gIGludGVsX2lvbW11X21hcCgpIHdvbid0IGxldCB1 cyBzZXQgdGhpcyBiaXQgaWYgdGhlCj4gPiBkb21haW4gY29udGFpbnMgYSBoYXJkd2FyZSB1bml0 IHRoYXQgZG9lc24ndCBzdXBwb3J0IGVjYXAuU0MsIGJ1dCBpdAo+ID4gYWxzbyBkb2Vzbid0IHVw ZGF0ZSBleGlzdGluZyBtYXBwaW5ncy4gIEJhcnJpbmcgaGFyZHdhcmUgYnVncywgaXQgc2VlbXMK PiA+IG11Y2ggZWFzaWVyIHRvIHVuY29uZGl0aW9uYWxseSBzZXQgRE1BX1BURV9TTlAgYnV0IHN0 aWxsIGFkdmVydGlzZQo+ID4gSU9NTVVfQ0FQX0NBQ0hFX0NPSEVSRU5DWSBiYXNlZCBvbiB0aGUg Y29tcG9zaXRpb24gb2YgdGhlIGRvbWFpbi4KPiA+IE90aGVyd2lzZSB3ZSBoYXZlIHRvIHJlamVj dCBhZGRpbmcgZGV2aWNlcyB0byBhIGRvbWFpbiB0aGF0IGNoYW5nZSB0aGUKPiA+IGNvaGVyZW5j eSBvbmNlIERNQSBtYXBwaW5ncyBhcmUgaW4gcGxheSBvciBuZXZlciBzZXQgSU9NTVVfQ0FDSEUg YW5kCj4gPiBhZHZlcnRpc2UgdG8gS1ZNIHRoYXQgdGhlIGRvbWFpbiBpcyBhbHdheXMgbm9uLWNv aGVyZW50LiAgVGhhbmtzLAo+IAo+IEl0J3Mgbm90IHRoYXQgdGhlIGRvbWFpbiBpcyBub24tY29o ZXJlbnQsIGlzIGl0PyBUaGUgU05QIGJpdCBhbGxvd3MgeW91Cj4gdG8gKmZvcmNlKiBhIFBDSWUg RE1BIHJlcXVlc3QgdG8gc25vb3AgdGhlIENQVSBjYWNoZSwgZXZlbiBpZiBpdCBkaWRuJ3QKPiAq cmVxdWVzdCogdGhhdC4KPiAKPiBJZiB5b3VyIGRldmljZSBpcyBhY3R1YWxseSAqdHJ5aW5nKiB0 byBkbyBjYWNoZS1jb2hlcmVudCAoaS5lLiBzbm9vcGluZykKPiBETUEsIHN1cmVseSB0aGF0IHdv cmtzIHJlZ2FyZGxlc3Mgb2YgdGhlIERNQV9QVEVfU05QIHNldHRpbmc/Cj4gCj4gT3IgYW0gSSBt aXNzaW5nIHNvbWV0aGluZz8KCkl0J3MgdGhlIG9wcG9zaXRlLCBkZXZpY2VzIGFyZSB0cnlpbmcg dG8gZG8gTm8tU25vb3AgdHJhbnNhY3Rpb25zIGFuZApLVk0gd291bGQgcmVhbGx5IHJhdGhlciBw cmVmZXIgd2JpbnZkIHdhcyBhIG5vLW9wIHNpbmNlIGVtdWxhdGVkIGRldmljZXMKZG9uJ3QgbmVl ZCBpdC4gIFdlIHRoZXJlZm9yZSBuZWVkIHRvIHRvZ2dsZSBLVk0ncyBiZWhhdmlvciB3aGVuIHdl IGhhdmUKYW4gYXNzaWduZWQgZGV2aWNlIGF0dGFjaGVkIHRvIGFuIElPTU1VIGRvbWFpbiB3aGVy ZSB0aGUgaGFyZHdhcmUgaXNuJ3QKc3RyaXBwaW5nIHRoZSBOby1Tbm9vcCBhdHRyaWJ1dGUuICBT b21lIGdyYXBoaWNzIGNhcmRzIHNlZW0gdG8gbWFrZSB1c2UKb2YgdGhpcyBhbmQgd2lsbCBnZXQg ZXJyb3IgY29kZXMgbG9hZGluZyB0aGVpciBkcml2ZXIgaWYgaXQgZG9lc24ndAp3b3JrLiAgVGhh bmtzLAoKQWxleAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0 dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11