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Thu, 11 Feb 2021 23:14:15 -0800 (PST) MIME-Version: 1.0 References: <1599734733-6431-1-git-send-email-yi.l.liu@intel.com> <1599734733-6431-3-git-send-email-yi.l.liu@intel.com> <6bcd5229-9cd3-a78c-ccb2-be92f2add373@redhat.com> In-Reply-To: From: Vivek Gautam Date: Fri, 12 Feb 2021 12:44:03 +0530 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v7 02/16] iommu/smmu: Report empty domain nesting info To: "Liu, Yi L" Cc: "Sun, Yi Y" , Jean-Philippe Brucker , "Tian, Kevin" , "Raj, Ashok" , "kvm@vger.kernel.org" , "stefanha@gmail.com" , "jasowang@redhat.com" , Will Deacon , "iommu@lists.linux-foundation.org" , "alex.williamson@redhat.com" , Robin Murphy , "Tian, Jun J" , "Wu, Hao" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" SGkgWWksCgoKT24gU2F0LCBKYW4gMjMsIDIwMjEgYXQgMjoyOSBQTSBMaXUsIFlpIEwgPHlpLmwu bGl1QGludGVsLmNvbT4gd3JvdGU6Cj4KPiBIaSBFcmljLAo+Cj4gPiBGcm9tOiBBdWdlciBFcmlj IDxlcmljLmF1Z2VyQHJlZGhhdC5jb20+Cj4gPiBTZW50OiBUdWVzZGF5LCBKYW51YXJ5IDE5LCAy MDIxIDY6MDMgUE0KPiA+Cj4gPiBIaSBZaSwgVml2ZWssCj4gPgo+IFsuLi5dCj4gPiA+IEkgc2Vl LiBJIHRoaW5rIHRoZXJlIG5lZWRzIGEgY2hhbmdlIGluIHRoZSBjb2RlIHRoZXJlLiBTaG91bGQg YWxzbyBleHBlY3QKPiA+ID4gYSBuZXN0aW5nX2luZm8gcmV0dXJuZWQgaW5zdGVhZCBvZiBhbiBp bnQgYW55bW9yZS4gQEVyaWMsIGhvdyBhYm91dCB5b3VyCj4gPiA+IG9waW5pb24/Cj4gPiA+Cj4g PiA+ICAgICBkb21haW4gPSBpb21tdV9nZXRfZG9tYWluX2Zvcl9kZXYoJnZkZXYtPnBkZXYtPmRl dik7Cj4gPiA+ICAgICByZXQgPSBpb21tdV9kb21haW5fZ2V0X2F0dHIoZG9tYWluLCBET01BSU5f QVRUUl9ORVNUSU5HLAo+ID4gJmluZm8pOwo+ID4gPiAgICAgaWYgKHJldCB8fCAhKGluZm8uZmVh dHVyZXMgJiBJT01NVV9ORVNUSU5HX0ZFQVRfUEFHRV9SRVNQKSkgewo+ID4gPiAgICAgICAgICAg ICAvKgo+ID4gPiAgICAgICAgICAgICAgKiBObyBuZWVkIGdvIGZ1dGhlciBhcyBubyBwYWdlIHJl cXVlc3Qgc2VydmljZSBzdXBwb3J0Lgo+ID4gPiAgICAgICAgICAgICAgKi8KPiA+ID4gICAgICAg ICAgICAgcmV0dXJuIDA7Cj4gPiA+ICAgICB9Cj4gPiBTdXJlIEkgdGhpbmsgaXQgaXMgImp1c3Qi IGEgbWF0dGVyIG9mIHN5bmNocm8gYmV0d2VlbiB0aGUgMiBzZXJpZXMuIFlpLAo+Cj4gZXhhY3Rs eS4KPgo+ID4gZG8geW91IGhhdmUgcGxhbnMgdG8gcmVzcGluIHBhcnQgb2YKPiA+IFtQQVRDSCB2 NyAwMC8xNl0gdmZpbzogZXhwb3NlIHZpcnR1YWwgU2hhcmVkIFZpcnR1YWwgQWRkcmVzc2luZyB0 byBWTXMKPiA+IG9yIHdvdWxkIHlvdSBhbGxvdyBtZSB0byBlbWJlZCB0aGlzIHBhdGNoIGluIG15 IHNlcmllcy4KPgo+IE15IHY3IGhhc27igJl0IHRvdWNoIHRoZSBwcnEgY2hhbmdlIHlldC4gU28g SSB0aGluayBpdCdzIGJldHRlciBmb3IgeW91IHRvCj4gZW1iZWQgaXQgdG8gIHlvdXIgc2VyaWVz LiBeX14KPgoKQ2FuIHlvdSBwbGVhc2UgbGV0IG1lIGtub3cgaWYgeW91IGhhdmUgYW4gdXBkYXRl ZCBzZXJpZXMgb2YgdGhlc2UKcGF0Y2hlcz8gSXQgd2lsbCBoZWxwIG1lIHRvIHdvcmsgd2l0aCB2 aXJ0aW8taW9tbXUvYXJtIHNpZGUgY2hhbmdlcy4KClRoYW5rcyAmIHJlZ2FyZHMKVml2ZWsKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGlu ZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGlu dXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11