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Shutemov" , Matthew Wilcox References: <20200709155002.GF12769@casper.infradead.org> <20200709160750.utl46xvavceuvnom@box> <441ebbeb-0408-e22e-20f4-1be571c4a18e@nextfour.com> From: Alex Shi Message-ID: <50113530-fae5-bb36-56c2-5b5c4f90426d@linux.alibaba.com> Date: Fri, 10 Jul 2020 17:34:52 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <441ebbeb-0408-e22e-20f4-1be571c4a18e@nextfour.com> X-Mailman-Approved-At: Fri, 10 Jul 2020 11:40:06 +0000 Cc: Hugh Dickins , "linux-kernel@vger.kernel.org" , Linux-MM , iommu@lists.linux-foundation.org, Johannes Weiner 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" 5ZyoIDIwMjAvNy8xMCDkuIvljYgxOjI4LCBNaWthIFBlbnR0aWzDpCDlhpnpgZM6Cj4gCj4gCj4g T24gMTAuNy4yMDIwIDcuNTEsIEFsZXggU2hpIHdyb3RlOgo+Pgo+PiDlnKggMjAyMC83LzEwIOS4 iuWNiDEyOjA3LCBLaXJpbGwgQS4gU2h1dGVtb3Yg5YaZ6YGTOgo+Pj4gT24gVGh1LCBKdWwgMDks IDIwMjAgYXQgMDQ6NTA6MDJQTSArMDEwMCwgTWF0dGhldyBXaWxjb3ggd3JvdGU6Cj4+Pj4gT24g VGh1LCBKdWwgMDksIDIwMjAgYXQgMTE6MTE6MTFQTSArMDgwMCwgQWxleCBTaGkgd3JvdGU6Cj4+ Pj4+IEhpIEtpcmlsbCAmIE1hdHRoZXcsCj4+Pj4+Cj4+Pj4+IEluIHRoZSBmdW5jIGNhbGwgY2hh aW4sIGZyb20gc3BsaXRfaHVnZV9wYWdlKCkgdG8gbHJ1X2FkZF9wYWdlX3RhaWwoKSwKPj4+Pj4g U2VlbXMgdGFpbCBwYWdlcyBhcmUgYWRkZWQgdG8gbHJ1IGxpc3QgYXQgbGluZSA5NjMsIGJ1dCBp biB0aGlzIHNjZW5hcmlvCj4+Pj4+IHRoZSBoZWFkIHBhZ2UgaGFzIG5vIGxydSBiaXQgYW5kIGlz bid0IHNldCB0aGUgYml0IGxhdGVyLiBXaHkgd2UgZG8gdGhpcz8KPj4+Pj4gb3IgZG8gSSBtaXNz IHN0aD8KPj4+PiBJIGRvbid0IHVuZGVyc3RhbmQgaG93IHdlIGdldCB0byBzcGxpdF9odWdlX3Bh Z2UoKSB3aXRoIGEgcGFnZSB0aGF0J3MKPj4+PiBub3Qgb24gYW4gTFJVIGxpc3QuICBCb3RoIGFu b255bW91cyBhbmQgcGFnZSBjYWNoZSBwYWdlcyBzaG91bGQgYmUgb24KPj4+PiBhbiBMUlUgbGlz dC4gIFdoYXQgYW0gSSBtaXNzaW5nPz4gCj4+Cj4+IFRoYW5rcyBhIGxvdCBmb3IgcXVpY2sgcmVw bHkhCj4+IFdoYXQgSSBhbSBjb25mdXNpbmcgaXMgdGhlIGNhbGwgY2hhaW46IF9faW9tbXVfZG1h X2FsbG9jX3BhZ2VzKCkKPj4gdG8gc3BsaXRfaHVnZV9wYWdlKCksIGluIHRoZSBmdW5jLCBzcGxp dGVkIHBhZ2UsCj4+IAlwYWdlID0gYWxsb2NfcGFnZXNfbm9kZShuaWQsIGFsbG9jX2ZsYWdzLCBv cmRlcik7Cj4+IEFuZCBpZiB0aGUgcGFnZXMgd2VyZSBhZGRlZCBpbnRvIGxydSwgdGhleSBtYXli ZSByZWNsYWltZWQgYW5kIGxvc3QsCj4+IHRoYXQgd291bGQgYmUgYSBwYW5pYyBidWcuIEJ1dCBp biBmYWN0LCB0aGlzIG5ldmVyIGhhcHBlbmVkIGZvciBsb25nIHRpbWUuCj4+IEFsc28gSSBwdXQg YSBCVUcoKSBhdCB0aGUgbGluZSwgaXQncyBuZXZyZSB0cmlnZ2VyZWQgaW4gbHRwLCBhbmQgcnVu X3ZtdGVzdHMKPiAKPiAKPiBJbsKgIF9faW9tbXVfZG1hX2FsbG9jX3BhZ2VzLCBhZnRlciBzcGxp dF9odWdlX3BhZ2UoKSzCoCB3aG8gaXMgdGFraW5nIGEKPiByZWZlcmVuY2Ugb24gdGFpbCBwYWdl cz8gU2VlbXMgdGFpbCBwYWdlcyBhcmUgZnJlZWQgYW5kIHRoZSBmdW5jdGlvbgo+IGVycm9ybm91 c2x5IHJldHVybnMgdGhlbSBpbiBwYWdlc1tdIGFycmF5IGZvciB1c2U/Cj4gCgpDQyBKb2VyZyBh bmQgaW9tbXUgbGlzdCwKClRoYXQncyBhIGdvb2QgcXVlc3Rpb24uIHNlZW1zIHRoZSBzcGxpdF9o dWdlX3BhZ2Ugd2FzIG5ldmVyIHRyaWdnZXJlZCBoZXJlLApzaW5jZSB0aGUgZnVuYyB3b3VsZCBj aGVjayB0aGUgUGFnZUxvY2sgZmlyc3QuIGFuZCBoYXZlIHBhZ2UtPm1hcHBpbmcgYW5kIFBhZ2VB bm9uCmNoZWNrLCBhbnkgb2YgdGhlbSBjb3VsZG4ndCBiZSBtYXRjaGVkIGZvciB0aGUgYWxsb2Nl ZCBwYWdlLgoKSGkgSm9lcmcsCndvdWxkIHlvdSBsaWtlIGxvb2sgaW50byB0aGlzPyBkbyB3ZSBz dGlsbCBuZWVkIHRoZSBzcGxpdF9odWdlX3BhZ2UoKSBoZXJlPwoKVGhhbmtzCkFsZXgKCmludCBz cGxpdF9odWdlX3BhZ2VfdG9fbGlzdChzdHJ1Y3QgcGFnZSAqcGFnZSwgc3RydWN0IGxpc3RfaGVh ZCAqbGlzdCkKewogICAgICAgIHN0cnVjdCBwYWdlICpoZWFkID0gY29tcG91bmRfaGVhZChwYWdl KTsKICAgICAgICBzdHJ1Y3QgZGVmZXJyZWRfc3BsaXQgKmRzX3F1ZXVlID0gZ2V0X2RlZmVycmVk X3NwbGl0X3F1ZXVlKGhlYWQpOwogICAgICAgIHN0cnVjdCBhbm9uX3ZtYSAqYW5vbl92bWEgPSBO VUxMOwogICAgICAgIHN0cnVjdCBhZGRyZXNzX3NwYWNlICptYXBwaW5nID0gTlVMTDsKICAgICAg ICBpbnQgY291bnQsIG1hcGNvdW50LCBleHRyYV9waW5zLCByZXQ7CiAgICAgICAgcGdvZmZfdCBl bmQ7CgogICAgICAgIFZNX0JVR19PTl9QQUdFKGlzX2h1Z2VfemVyb19wYWdlKGhlYWQpLCBoZWFk KTsKICAgICAgICBWTV9CVUdfT05fUEFHRSghUGFnZUxvY2tlZChoZWFkKSwgaGVhZCk7CTw9PQo+ IApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBt YWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0 cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=