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s=s201512; t=1652356651; bh=iY2yJcOLbtsYvLDgfwb1awyh7iPMEY/G3mZOTKxuvSo=; h=Subject:To:Cc:References:From:Date:In-Reply-To; b=h5YTEOcUp/cSeBcfW5vICGhwBpZ8fQWphC8O8CNtbO6yCuBJ1TBmABfyA9bfaDlNO cskk+Ind6Zj+EED2dxH38Foe6ykWMiAp5rbv9CD2aBmrI/Zo6RcxppLcP59K3TdheD mD+Jn+oV3m6hJR70qm6ZHTkO1XMbthvgidLV4dHc= Received: from [192.168.0.110] ([36.57.146.152]) by newxmesmtplogicsvrszc8.qq.com (NewEsmtp) with SMTP id E5B18659; Thu, 12 May 2022 19:57:27 +0800 X-QQ-mid: xmsmtpt1652356647tckuvhfck Message-ID: X-QQ-XMAILINFO: N7h1OCCDntujtdw9xm6YqEJCpuOaHp7geMFL7LuaYCdhh86xQ58E5X0S1COleI g6J2yMjukbzR7JdZZ6k88mMftRMWnk0gNotf4G9j+N74QRTYmvn4aiiu91evfDmELV2wtPr7IXqd Rn6M0R34PwYUxJELpiqjxc1hUot8ADAMJKK5sNSyFWrN33Q33MbSSsUL9zOtVPddDSX3+vrjttoI I/fvLzR1puBh5l24yT72z4GvroL1LNrNj3ylsuJp7R6RrPdhvDlexxyoGL5kZb/vgq+n25O/BJn3 TdES50w336OX53XHuIr89wNpX0gJlv4A4vI8z5Wq8z4SfLaB6WX2siyKI+4RdTmsxcP0P6qTsYxF uj/zShH4mLFDxwRc5zI4dXvhxUkB9+SEBdZ2XTkVEGeopZRFwiSpc2wMT+mudDbAgigFD/gbKMhr F1n0zENLia7unuI9lC58b9fbEAN9PjtlWKObcIF4FVVAKPwkc5Nz8FwJvsyWaOtcao8dFoEMKeMo 7FsmA+6JodrlKGxQRixF8evrN30lbm3aNHb2n+6Kbk106J3QRybFlRcMsWaC3nMrj4+ROfwbTRhl ObNlAzR2RSm42de5O0zL52a58Z+Gk7zif3KalKCR05GmCIw8oO//SzpHuv+cSGHvJfUPWJBO1hRo QMWAxbYot9O8LG0JjO/b+n5sQS/N0WsJINq93VT6EeX0+hP9mPchs22cjH8wEakkKFeXSbDtNKXi hB+CPqa9FjGmHezgb3AD3U7Z4xDBRVBfmqyMSrvOESg4mCFdRyIxYf2Pp4aGx3A/MLfGDEuD6ELY vPZQNbwmknt7373yOoVGtRPuVkYu3PbWISa8vNSNTecBUiKNts1q4NdUoTdUSHPL0fEjml42DWgf Gi4TguWS5OzOmkvPGMivPNVShZxwaNNtFUfdXRjcuTFPw1MoX3czmflR+hq1h/12O8+eq6vy2XZo /NE/4UcMFQ6e2dpm8l1Q== Subject: Re: [PATCH] vfio: Remove VFIO_TYPE1_NESTING_IOMMU To: Jason Gunthorpe , Zhangfei Gao References: <0-v1-0093c9b0e345+19-vfio_no_nesting_jgg@nvidia.com> <0e2f7cb8-f0d9-8209-6bc2-ca87fff57f1f@arm.com> <20220510181327.GM49344@nvidia.com> <6c6f3ecb-6339-4093-a15a-fcf95a7c61fb@linaro.org> <20220512113241.GQ49344@nvidia.com> From: "zhangfei.gao@foxmail.com" X-OQ-MSGID: <95041b28-c676-4063-9a85-838f1b971b98@foxmail.com> Date: Thu, 12 May 2022 19:57:26 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20220512113241.GQ49344@nvidia.com> Content-Language: en-US Cc: Jean-Philippe Brucker , kvm@vger.kernel.org, Robin Murphy , Cornelia Huck , iommu@lists.linux-foundation.org, Vivek Kumar Gautam , Alex Williamson , Will Deacon , linux-arm-kernel@lists.infradead.org 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" CgpPbiAyMDIyLzUvMTIg5LiL5Y2INzozMiwgSmFzb24gR3VudGhvcnBlIHZpYSBpb21tdSB3cm90 ZToKPiBPbiBUaHUsIE1heSAxMiwgMjAyMiBhdCAwMzowNzowOVBNICswODAwLCBaaGFuZ2ZlaSBH YW8gd3JvdGU6Cj4+Pj4gSSBjYW4ndCBoZWxwIGZlZWxpbmcgYSBsaXR0bGUgd2FyeSBhYm91dCBy ZW1vdmluZyB0aGlzIHVudGlsIElPTU1VRkQKPj4+PiBjYW4gYWN0dWFsbHkgb2ZmZXIgYSBmdW5j dGlvbmFsIHJlcGxhY2VtZW50IC0gaXMgaXQgaW4gdGhlIHdheSBvZgo+Pj4+IGFueXRoaW5nIHVw Y29taW5nPwo+Pj4gICBGcm9tIGFuIHVwc3RyZWFtIHBlcnNwZWN0aXZlIGlmIHNvbWVvbmUgaGFz IGEgcGF0Y2hlZCBrZXJuZWwgdG8KPj4+IGNvbXBsZXRlIHRoZSBmZWF0dXJlLCB0aGVuIHRoZXkg Y2FuIHBhdGNoIHRoaXMgcGFydCBpbiBhcyB3ZWxsLCB3ZQo+Pj4gc2hvdWxkIG5vdCBjYXJyeSBk ZWFkIGNvZGUgbGlrZSB0aGlzIGluIHRoZSBrZXJuZWwgYW5kIGluIHRoZSB1YXBpLgo+Pj4KPj4+ IEl0IGlzIG5vdCBkaXJlY3RseSBpbiB0aGUgd2F5LCBidXQgdGhpcyBuZWVkcyB0byBnZXQgZG9u ZSBhdCBzb21lCj4+PiBwb2ludCwgSSdkIHJhdGhlciBqdXN0IGdldCBpdCBvdXQgb2YgdGhlIHdh eS4KPj4gV2UgYXJlIHVzaW5nIHRoaXMgaW50ZXJmYWNlIGZvciBuZXN0ZWQgbW9kZS4KPiBIb3cg YXJlIHlvdSB1c2luZyBpdD8gSXQgZG9lc24ndCBkbyBhbnl0aGluZy4gRG8geW91IGhhdmUgb3V0 IG9mIHRyZWUKPiBwYXRjaGVzIGFzIHdlbGw/CgpZZXMsIHRoZXJlIGFyZSBzb21lIHBhdGNoZXMg b3V0IG9mIHRyZWUsIHNpbmNlIHRoZXkgYXJlIHBlbmRpbmcgZm9yIAphbG1vc3Qgb25lIHllYXIu CgpCeSB0aGUgd2F5LCBJIGFtIHRyeWluZyB0byB0ZXN0IG5lc3RpbmcgbW9kZSBiYXNlZCBvbiBp b21tdWZkLCBzdGlsbCAKcmVxdWlyZXMgaW9tbXVfZW5hYmxlX25lc3RpbmcsCndoaWNoIGlzIHJl bW92ZWQgaW4gdGhpcyBwYXRjaCBhcyB3ZWxsLgoKU28gY2FuIHdlIHdhaXQgZm9yIGFsdGVybmF0 aXZlIHBhdGNoIHRoZW4gcmVtb3ZlIHRoZW0/CgpUaGFua3MKCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlz dHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3Jn L21haWxtYW4vbGlzdGluZm8vaW9tbXU=