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10 Nov 2019 17:30:36 -0800 Subject: Re: [PATCH v2 1/1] iommu/vt-d: Add Kconfig option to enable/disable scalable mode To: Qian Cai References: <20191109034039.27964-1-baolu.lu@linux.intel.com> From: Lu Baolu Message-ID: <519c1126-ab91-1308-bdd0-c8d1be7a1c63@linux.intel.com> Date: Mon, 11 Nov 2019 09:27:42 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: kevin.tian@intel.com, ashok.raj@intel.com, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com, David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org SGksCgpPbiAxMS85LzE5IDExOjU5IEFNLCBRaWFuIENhaSB3cm90ZToKPiAKPiAKPj4gT24gTm92 IDgsIDIwMTksIGF0IDEwOjQwIFBNLCBMdSBCYW9sdSA8YmFvbHUubHVAbGludXguaW50ZWwuY29t PiB3cm90ZToKPj4KPj4gVGhpcyBhZGRzIEtjb25maWcgb3B0aW9uIElOVEVMX0lPTU1VX1NDQUxB QkxFX01PREVfREVGQVVMVF9PTgo+PiB0byBtYWtlIGl0IGVhc2llciBmb3IgZGlzdHJpYnV0aW9u cyB0byBlbmFibGUgb3IgZGlzYWJsZSB0aGUKPj4gSW50ZWwgSU9NTVUgc2NhbGFibGUgbW9kZSBi eSBkZWZhdWx0IGR1cmluZyBrZXJuZWwgYnVpbGQuCj4+Cj4+IFNpZ25lZC1vZmYtYnk6IEx1IEJh b2x1IDxiYW9sdS5sdUBsaW51eC5pbnRlbC5jb20+Cj4+IC0tLQo+PiBkcml2ZXJzL2lvbW11L0tj b25maWcgICAgICAgfCA5ICsrKysrKysrKwo+PiBkcml2ZXJzL2lvbW11L2ludGVsLWlvbW11LmMg fCA3ICsrKysrKy0KPj4gMiBmaWxlcyBjaGFuZ2VkLCAxNSBpbnNlcnRpb25zKCspLCAxIGRlbGV0 aW9uKC0pCj4+Cj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2lvbW11L0tjb25maWcgYi9kcml2ZXJz L2lvbW11L0tjb25maWcKPj4gaW5kZXggZTM4NDJlYWJjZmRkLi5mYmRmM2ZkMjkxZDkgMTAwNjQ0 Cj4+IC0tLSBhL2RyaXZlcnMvaW9tbXUvS2NvbmZpZwo+PiArKysgYi9kcml2ZXJzL2lvbW11L0tj b25maWcKPj4gQEAgLTI0Miw2ICsyNDIsMTUgQEAgY29uZmlnIElOVEVMX0lPTU1VX0ZMT1BQWV9X QQo+PiAJICB3b3JrYXJvdW5kIHdpbGwgc2V0dXAgYSAxOjEgbWFwcGluZyBmb3IgdGhlIGZpcnN0 Cj4+IAkgIDE2TWlCIHRvIG1ha2UgZmxvcHB5IChhbiBJU0EgZGV2aWNlKSB3b3JrLgo+Pgo+PiAr Y29uZmlnIElOVEVMX0lPTU1VX1NDQUxBQkxFX01PREVfREVGQVVMVF9PTgo+PiArCXByb21wdCAi RW5hYmxlIEludGVsIElPTU1VIHNjYWxhYmxlIG1vZGUgYnkgZGVmYXVsdCIKPj4gKwlkZXBlbmRz IG9uIElOVEVMX0lPTU1VCj4+ICsJaGVscAo+PiArCSAgU2VsZWN0aW5nIHRoaXMgb3B0aW9uIHdp bGwgZW5hYmxlIHRoZSBzY2FsYWJsZSBtb2RlIGlmCj4+ICsJICBoYXJkd2FyZSBwcmVzZW50cyB0 aGUgY2FwYWJpbGl0eS4gSWYgdGhpcyBvcHRpb24gaXMgbm90Cj4+ICsJICBzZWxlY3RlZCwgc2Nh bGFibGUgbW9kZSBzdXBwb3J0IGNvdWxkIGFsc28gYmUgZW5hYmxlZAo+PiArCSAgYnkgcGFzc2lu ZyBpbnRlbF9pb21tdT1zbV9vbiB0byB0aGUga2VybmVsLgo+IAo+IAo+IE1heWJlIGEgc2VudGVu Y2Ugb3IgdHdvIHRvIGRlc2NyaWJlIHdoYXQgdGhlIHNjYWxhYmxlIG1vZGUgaXMgaW4gbGF5bWFu J3MKPiB0ZXJtcyBjb3VsZCBiZSB1c2VmdWwsIHNvIGRldmVsb3BlcnMgZG9u4oCZdCBuZWVkIHRv IHNlYXJjaCBhcm91bmQgZm9yIHRoZQo+IEtjb25maWcgc2VsZWN0aW9uPwoKSG93IGFib3V0ICJw YXNpZCBiYXNlZCBtdWx0aXBsZSBzdGFnZXMgRE1BIHRyYW5zbGF0aW9uIj8KCkJlc3QgcmVnYXJk cywKYmFvbHUKCj4gCj4+ICsKPj4gY29uZmlnIElSUV9SRU1BUAo+PiAJYm9vbCAiU3VwcG9ydCBm b3IgSW50ZXJydXB0IFJlbWFwcGluZyIKPj4gCWRlcGVuZHMgb24gWDg2XzY0ICYmIFg4Nl9JT19B UElDICYmIFBDSV9NU0kgJiYgQUNQSQo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9pb21tdS9pbnRl bC1pb21tdS5jIGIvZHJpdmVycy9pb21tdS9pbnRlbC1pb21tdS5jCj4+IGluZGV4IDZkYjZkOTY5 ZTMxYy4uNjA1MWZlNzkwYzYxIDEwMDY0NAo+PiAtLS0gYS9kcml2ZXJzL2lvbW11L2ludGVsLWlv bW11LmMKPj4gKysrIGIvZHJpdmVycy9pb21tdS9pbnRlbC1pb21tdS5jCj4+IEBAIC0zNTUsOSAr MzU1LDE0IEBAIHN0YXRpYyBwaHlzX2FkZHJfdCBpbnRlbF9pb21tdV9pb3ZhX3RvX3BoeXMoc3Ry dWN0IGlvbW11X2RvbWFpbiAqZG9tYWluLAo+PiBpbnQgZG1hcl9kaXNhYmxlZCA9IDA7Cj4+ICNl bHNlCj4+IGludCBkbWFyX2Rpc2FibGVkID0gMTsKPj4gLSNlbmRpZiAvKkNPTkZJR19JTlRFTF9J T01NVV9ERUZBVUxUX09OKi8KPj4gKyNlbmRpZiAvKiBDT05GSUdfSU5URUxfSU9NTVVfREVGQVVM VF9PTiAqLwo+Pgo+PiArI2lmZGVmIElOVEVMX0lPTU1VX1NDQUxBQkxFX01PREVfREVGQVVMVF9P Tgo+PiAraW50IGludGVsX2lvbW11X3NtID0gMTsKPj4gKyNlbHNlCj4+IGludCBpbnRlbF9pb21t dV9zbTsKPj4gKyNlbmRpZiAvKiBJTlRFTF9JT01NVV9TQ0FMQUJMRV9NT0RFX0RFRkFVTFRfT04g Ki8KPj4gKwo+PiBpbnQgaW50ZWxfaW9tbXVfZW5hYmxlZCA9IDA7Cj4+IEVYUE9SVF9TWU1CT0xf R1BMKGludGVsX2lvbW11X2VuYWJsZWQpOwo+Pgo+PiAtLSAKPj4gMi4xNy4xCj4+Cj4+IF9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4+IGlvbW11IG1haWxp bmcgbGlzdAo+PiBpb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwo+PiBodHRwczovL2xp c3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQo+IAo+IApfX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5n IGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51 eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=