From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH v6 10/14] mm / iommu: split need_iommu() into has_iommu_pt() and need_iommu_pt_sync() Date: Wed, 12 Sep 2018 00:45:09 -0600 Message-ID: <5B98B5F502000078001E78E9@prv1-mh.provo.novell.com> References: <20180823094711.21376-1-paul.durrant@citrix.com> <20180823094711.21376-11-paul.durrant@citrix.com> <5B97D1A902000078001E75A2@prv1-mh.provo.novell.com> <6fdadeea76e944fcbdcf9f2b0a43025a@AMSPEX02CL03.citrite.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fzytn-0000ps-6x for xen-devel@lists.xenproject.org; Wed, 12 Sep 2018 06:45:15 +0000 In-Reply-To: <6fdadeea76e944fcbdcf9f2b0a43025a@AMSPEX02CL03.citrite.net> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Paul Durrant Cc: Kevin Tian , Stefano Stabellini , Wei Liu , Jun Nakajima , Razvan Cojocaru , Konrad Rzeszutek Wilk , Andrew Cooper , Tim Deegan , george.dunlap@citrix.com, Julien Grall , Tamas K Lengyel , Suravee Suthikulpanit , xen-devel , IanJackson , Brian Woods List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDExLjA5LjE4IGF0IDE3OjQwLCA8UGF1bC5EdXJyYW50QGNpdHJpeC5jb20+IHdyb3Rl Ogo+PiBGcm9tOiBYZW4tZGV2ZWwgW21haWx0bzp4ZW4tZGV2ZWwtYm91bmNlc0BsaXN0cy54ZW5w cm9qZWN0Lm9yZ10gT24gQmVoYWxmCj4+IE9mIEphbiBCZXVsaWNoCj4+IFNlbnQ6IDExIFNlcHRl bWJlciAyMDE4IDE1OjMxCj4+IAo+PiA+Pj4gT24gMjMuMDguMTggYXQgMTE6NDcsIDxwYXVsLmR1 cnJhbnRAY2l0cml4LmNvbT4gd3JvdGU6Cj4+ID4gLS0tIGEveGVuL2FyY2gveDg2L3g4Nl82NC9t bS5jCj4+ID4gKysrIGIveGVuL2FyY2gveDg2L3g4Nl82NC9tbS5jCj4+ID4gQEAgLTE0MjYsNyAr MTQyNiw4IEBAIGludCBtZW1vcnlfYWRkKHVuc2lnbmVkIGxvbmcgc3BmbiwgdW5zaWduZWQKPj4g bG9uZyBlcGZuLCB1bnNpZ25lZCBpbnQgcHhtKQo+PiA+ICAgICAgaWYgKCByZXQgKQo+PiA+ICAg ICAgICAgIGdvdG8gZGVzdHJveV9tMnA7Cj4+ID4KPj4gPiAtICAgIGlmICggaW9tbXVfZW5hYmxl ZCAmJiAhaW9tbXVfcGFzc3Rocm91Z2ggJiYKPj4gIW5lZWRfaW9tbXUoaGFyZHdhcmVfZG9tYWlu KSApCj4+ID4gKyAgICBpZiAoIGlvbW11X2VuYWJsZWQgJiYgIWlvbW11X3Bhc3N0aHJvdWdoICYm Cj4+ID4gKyAgICAgICAgICFuZWVkX2lvbW11X3B0X3N5bmMoaGFyZHdhcmVfZG9tYWluKSApCj4+ ID4gICAgICB7Cj4+ID4gICAgICAgICAgZm9yICggaSA9IHNwZm47IGkgPCBlcGZuOyBpKysgKQo+ PiA+ICAgICAgICAgICAgICBpZiAoIGlvbW11X21hcF9wYWdlKGhhcmR3YXJlX2RvbWFpbiwgX2Jm bihpKSwgX21mbihpKSwKPj4gCj4+IEknbSBjb25mdXNlZCAtIHRoZSBjb25kaXRpb24geW91IGNo YW5nZSBsb29rcyB0byBiZSBpbnZlcnRlZC4gV291bGRuJ3QKPj4gd2UgYmV0dGVyIGZpeCB0aGlz Pwo+IAo+IEkgZG9uJ3QgdGhpbmsgaXQgaXMgaW52ZXJ0ZWQuIEkgdGhpbmsgdGhpcyBpcyB0byBh ZGQgbmV3IGhvdHBsdWdnZWQgbWVtb3J5IAo+IHRvIHRoZSAxOjEgbWFwIGluIHRoZSBjYXNlIHRo YXQgZG9tMCBpcyBub3QgaW4gc3RyaWN0IG1vZGUuIEkgY291bGQgYmUgd3JvbmcuIAoKT2gsIEkg dGhpbmsgeW91J3JlIHJpZ2h0LiBJdCBpcyBqdXN0IHJhdGhlciBjb25mdXNpbmcgdG8gc2VlIGFu CmlvbW11X21hcF9wYWdlKCkgY2FsbCBxdWFsaWZpZWQgYnkgIW5lZWRfaW9tbXUoKS4gQnV0IHRo YXQncwphcyBjb25mdXNpbmcgKHRvIG1lKSBhcyB0aGUgc2V0dXAgbG9naWMgZm9yIERvbTAncyBw YWdlIHRhYmxlcy4KCj4+IEFuZCB0aGVuIEkgYWdhaW4gd29uZGVyIHdoZXRoZXIgeW91J3ZlIGNo b3NlbiB0aGUgcmlnaHQgcHJlZGljYXRlOgo+PiBXaGVyZSB3b3VsZCB0aGUgZXF1aXZhbGVudCBt YXBwaW5ncyBjb21lIGZyb20gaW4gdGhlIG9wcG9zaXRlIGNhc2U/Cj4gCj4gSWYgZG9tMCBpcyBp biBzdHJpY3QgbW9kZSB0aGVuIEkgYXNzdW1lIHRoYXQgdGhlIHN5bmNocm9uaXphdGlvbiBpcyBo YW5kbGVkIAo+IHdoZW4gdGhlIGNhbGxzIGFyZSBtYWRlIHRvIGFkZCBtZW1vcnkgaW50byB0aGUg cDJtICh3aGljaCBJSVJDIGhhcHBlbnMgZXZlbiAKPiBmb3IgUFYgZ3Vlc3RzKS4KClJpZ2h0IHlv dSBhcmUuCgo+IE15IGFpbSBmb3IgdGhpcyBwYXRjaCBpcyB0byBhdm9pZCBhbnkgdmlzaWJsZSBm dW5jdGlvbmFsICBjaGFuZ2UuCgpTdXJlIC0gSSBkaWRuJ3QgbWVhbiBhbnl0aGluZyBoZXJlIChp ZiBhdCBhbGwpIHRvIGJlIGRvbmUgaW4gdGhpcyBwYXRjaAoob3IgcGVyaGFwcyBldmVuIHNlcmll cyksIEkndmUgbWVyZWx5IG5vdGljZWQgdGhpcyBhcyBhbiBhcHBhcmVudApvZGRpdHkgKHdoaWNo IGlmIEkgd2VyZSByaWdodCB3b3VsZCBwZXJoYXBzIGJldHRlciBoYXZlIGJlZW4gZml4ZWQKYmVm b3JlIHlvdXIgdHJhbnNmb3JtYXRpb25zKS4KCj4+ID4gLS0tIGEveGVuL2NvbW1vbi9tZW1vcnku Ywo+PiA+ICsrKyBiL3hlbi9jb21tb24vbWVtb3J5LmMKPj4gPiBAQCAtODA1LDggKzgwNSw4IEBA IGludCB4ZW5tZW1fYWRkX3RvX3BoeXNtYXAoc3RydWN0IGRvbWFpbiAqZCwKPj4gc3RydWN0IHhl bl9hZGRfdG9fcGh5c21hcCAqeGF0cCwKPj4gPiAgICAgIHhhdHAtPnNpemUgLT0gc3RhcnQ7Cj4+ ID4KPj4gPiAgI2lmZGVmIENPTkZJR19IQVNfUEFTU1RIUk9VR0gKPj4gPiAtICAgIGlmICggbmVl ZF9pb21tdShkKSApCj4+ID4gLSAgICAgICAgdGhpc19jcHUoaW9tbXVfZG9udF9mbHVzaF9pb3Rs YikgPSAxOwo+PiA+ICsgICAgaWYgKCBuZWVkX2lvbW11X3B0X3N5bmMoZCkgfHwgaW9tbXVfdXNl X2hhcF9wdChkKSApCj4+ID4gKyAgICAgICB0aGlzX2NwdShpb21tdV9kb250X2ZsdXNoX2lvdGxi KSA9IDE7Cj4+ID4gICNlbmRpZgo+PiAKPj4gUmF0aGVyIHRoYW4gbWFraW5nIHRoZSBjb25kaXRp b25hbCBtb3JlIGNvbXBsaWNhdGVkLCBwZXJoYXBzCj4+IHNpbXBseSBkcm9wIGl0IChhbmQgbW92 ZSB0aGUgcmVzZXQtdG8tZmFsc2UgY29kZSBvdXQgb2YgLi4uCj4+IAo+PiA+IEBAIC04MjgsNyAr ODI4LDcgQEAgaW50IHhlbm1lbV9hZGRfdG9fcGh5c21hcChzdHJ1Y3QgZG9tYWluICpkLAo+PiBz dHJ1Y3QgeGVuX2FkZF90b19waHlzbWFwICp4YXRwLAo+PiA+ICAgICAgfQo+PiA+Cj4+ID4gICNp ZmRlZiBDT05GSUdfSEFTX1BBU1NUSFJPVUdICj4+ID4gLSAgICBpZiAoIG5lZWRfaW9tbXUoZCkg KQo+PiA+ICsgICAgaWYgKCBuZWVkX2lvbW11X3B0X3N5bmMoZCkgfHwgaW9tbXVfdXNlX2hhcF9w dChkKSApCj4+ID4gICAgICB7Cj4+ID4gICAgICAgICAgaW50IHJldDsKPj4gCj4+IC4uLiB0aGlz IGlmKCkpPwo+PiAKPj4gQWxzbyBpdCBsb29rcyB0byBtZSBhcyBpZiBoZXJlIHlvdSd2ZSBnb3Qg Y29uZnVzZWQgYnkgdGhlIG1lYW5pbmcKPj4geW91J3ZlIGFzc2lnbmVkIHRvIG5lZWRfaW9tbXVf cHRfc3luYygpOiBBY2NvcmRpbmcgdG8gdGhlCj4+IGRlc2NyaXB0aW9uLCBpdCBpcyBhYm91dCBz eW5jLWluZyBvZiBwYWdlIHRhYmxlcy4gSGVyZSwgaG93ZXZlciwKPj4gd2UncmUgY2hlY2tpbmcg d2hldGhlciB0byBmbHVzaCBUTEJzLgo+IAo+IFllcywgSSBtYXkgYmUgY29uZnVzZWQgaGVyZSBi dXQgaXQgd291bGQgc2VlbSB0byBtZSB0aGF0IGZsdXNoaW5nIHRoZSBJT1RMQiAKPiB3b3VsZCBi ZSBuZWNlc3NhcnkgZXZlbiBpbiB0aGUgY2FzZSB3aGVyZSB0aGUgcGFnZSB0YWJsZXMgYXJlIHNo YXJlZC4gSSdsbCAKPiBjaGVjayB0aGUgbG9naWMgYWdhaW4uCgpGbHVzaGluZyBpcyBuZWNlc3Nh cnkgYWx3YXlzLCBhbmQgbXkgY29tbWVudCBkaWRuJ3QgZ28gaW4gdGhhdApkaXJlY3Rpb24uIFdo YXQgSSB3YXMgdHJ5aW5nIHRvIHBvaW50IG91dCBpcyB0aGF0IHRoZSB2YWx1ZSBvZgppb21tdV9k b250X2ZsdXNoX2lvdGxiIGRvZXNuJ3QgbWF0dGVyIHdoZW4gbm8gZmx1c2hpbmcKaGFwcGVucyBh bnl3YXkuIEkuZS4gc2V0dGluZyBpdCB0byB0cnVlIHVuY29uZGl0aW9uYWxseSBzaG91bGQKbm90 IGhhdmUgYW55IGJhZCBlZmZlY3QgKGJ1dCB0aGUgbm9uLXN0cmljdC1tb2RlLURvbTAgY2FzZQpt YXkgbmVlZCBkb3VibGUgY2hlY2tpbmcsIGFsYmVpdCBldmVuIGluIHRoYXQgY2FzZSBzdXBwcmVz c2luZwppbmRpdmlkdWFsIHBhZ2UgZmx1c2hpbmcgd291bGQgYmUgZGVzaXJhYmxlLCBpbiB3aGlj aCBjYXNlIC0gaWYKbmVlZGVkIC0gdGhlIHNlY29uZCBpZigpIG1pZ2h0IG5lZWQgYWRqdXN0bWVu dCwgaW5kZXBlbmRlbnQKb2YgdGhlIGNoYW5nZSB5b3UncmUgZG9pbmcgaGVyZSkuCgpKYW4KCgoK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVs IG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0 cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==