From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw1-f67.google.com (mail-yw1-f67.google.com [209.85.161.67]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 94BCD21161235 for ; Mon, 1 Oct 2018 15:23:30 -0700 (PDT) Received: by mail-yw1-f67.google.com with SMTP id v1-v6so6214089ywv.6 for ; Mon, 01 Oct 2018 15:23:30 -0700 (PDT) Subject: Re: [PATCH v8 13/13] nvmet: Optionally use PCI P2P memory References: <20180927165420.5290-1-logang@deltatee.com> <20180927165420.5290-14-logang@deltatee.com> <5ddeed51-0580-9581-cf12-c75e18b4f7cc@grimberg.me> <69cd8aab-b94e-98f5-5397-48bb875e8280@deltatee.com> From: Sagi Grimberg Message-ID: Date: Mon, 1 Oct 2018 15:23:25 -0700 MIME-Version: 1.0 In-Reply-To: <69cd8aab-b94e-98f5-5397-48bb875e8280@deltatee.com> Content-Language: en-US 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: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Logan Gunthorpe , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, linux-rdma@vger.kernel.org, linux-nvdimm@lists.01.org, linux-block@vger.kernel.org Cc: Jens Axboe , =?UTF-8?Q?Christian_K=c3=b6nig?= , Benjamin Herrenschmidt , Steve Wise , Alex Williamson , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Jason Gunthorpe , Bjorn Helgaas , Max Gurtovoy , Christoph Hellwig List-ID: Cj4+PiArLyoKPj4+ICsgKiBJZiBhbGxvd19wMnBtZW0gaXMgc2V0LCB3ZSB3aWxsIHRyeSB0byB1 c2UgUDJQIG1lbW9yeSBmb3IgdGhlIFNHTCBsaXN0cyBmb3IKPj4+ICsgKiDOmS9PIGNvbW1hbmRz LiBUaGlzIHJlcXVpcmVzIHRoZSBQQ0kgcDJwIGRldmljZSB0byBiZSBjb21wYXRpYmxlIHdpdGgg dGhlCj4+PiArICogYmFja2luZyBkZXZpY2UgZm9yIGV2ZXJ5IG5hbWVzcGFjZSBvbiB0aGlzIGNv bnRyb2xsZXIuCj4+PiArICovCj4+PiArc3RhdGljIHZvaWQgbnZtZXRfc2V0dXBfcDJwbWVtKHN0 cnVjdCBudm1ldF9jdHJsICpjdHJsLCBzdHJ1Y3QgbnZtZXRfcmVxICpyZXEpCj4+PiArewo+Pj4g KwlzdHJ1Y3QgbnZtZXRfbnMgKm5zOwo+Pj4gKwlpbnQgcmV0Owo+Pj4gKwo+Pj4gKwlpZiAoIXJl cS0+cG9ydC0+dXNlX3AycG1lbSB8fCAhcmVxLT5wMnBfY2xpZW50KQo+Pj4gKwkJcmV0dXJuOwo+ Pgo+PiBOaXQsIElNTyB3b3VsZCBiZSBiZXR0ZXIgdG8gY2hlY2sgYXQgdGhlIGNhbGwtc2l0ZSwg YnV0IG5vdCBhIGhhcmQKPj4gbXVzdC4uLgo+IAo+IEknZCByYXRoZXIga2VlcCB0aGUgbG9naWMg Zm9yIHdoZXRoZXIgdG8gZW5hYmxlIHAycG1lbSBpbiBpdCdzIG93bgo+IGZ1bmN0aW9uLiBudm1l X2FsbG9jX2N0cmwoKSBpcyBhbHJlYWR5IHZlcnkgbG9uZyBhbmQgY29tcGxpY2F0ZWQuCgpGYWly IGVub3VnaC4uCgo+PiBJIHN0aWxsIGRvIG5vdCBmdWxseSB1bmRlcnN0YW5kIHdoeSBwMnBfZGV2 IGhhcyB0byBiZSBjdHJsLXdpZGUgYW5kIG5vdAo+PiBwZXIgbmFtZXNwYWNlLiBTb3JyeSB0byBr ZWVwIGJyaW5naW5nIHRoaXMgdXAgKGFnYWluKS4gQnV0IGlmIHBlb3BsZSBhcmUKPj4gT0sgd2l0 aCBpdCB0aGVuIEkgZ3Vlc3MgSSBjYW4gc3RvcCBhc2tpbmcgYWJvdXQgdGhpcy4uLgo+IAo+IEJl Y2F1c2UgeW91IG5ldmVyIGFuc3dlcmVkIG15IHF1ZXN0aW9uIGJhY2sgaW4gTWFyY2hbMV0gKHdo aWNoIEkgdGhpbmsKPiB5b3UndmUgYW5zd2VyZWQgYmVsb3cpLi4uLgoKSSdtIHNvcnJ5Li4uIEkg bG9zdCB0cmFja2luZyBvbiB0aGlzLi4uCgo+PiBJIHRoaW5rIHRoYXQgYXQgc29tZSBwb2ludCB3 ZSBzYWlkIHRoYXQgdGhpcyBsb29rcyBsaWtlIGl0IHNob3VsZCBmYWxsCj4+IGJhY2sgdG8gaG9z dCBtZW1vcnkgZm9yIHRob3NlIG5hbWVzcGFjZXMuLiB3aGVuIHdlIGFsbG9jYXRlIHRoZSBzZ2wg d2UKPj4gYWxyZWFkeSBhc3NpZ25lZCBhIG5hbWVzcGFjZSB0byB0aGUgcmVxdWVzdCAobnZtZXRf cmVxX2luaXQpLgo+IAo+IEkgZGlkIG5vdCByZWFsaXplIHRoZSBuYW1lc3BhY2Ugd291bGQgYmUg YXZhaWxhYmxlIGF0IHRoaXMgdGltZS4gSSBndWVzcwo+IEkgY2FuIGdpdmUgdGhpcyBhIHRyeSwg YnV0IGl0J3MgZ29pbmcgdG8gYmUgYSBmYWlybHkgYmlnIGNoYW5nZSBmcm9tCj4gd2hhdCdzIHBy ZXNlbnRlZCBoZXJlLi4uIFRob3VnaCwgSSBhZ3JlZSBpdCdsbCBwcm9iYWJseSBiZSBhbiBpbXBy b3ZlbWVudC4KClRoYW5rcywgaWYgaXQgdHVybnMgb3V0IHRvIGNyZWF0ZSB0byBtdWNoIG9mIGEg Y2h1cm4sIHdlIGNvdWxkIGRlZmVyCnRoYXQgdG8gYSBsYXRlciBzdGFnZSwgYnV0IHdlIGNhbiBh dCBsZWFzdCBkb2N1bWVudCBpdC4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KTGludXgtbnZkaW1tIG1haWxpbmcgbGlzdApMaW51eC1udmRpbW1AbGlzdHMu MDEub3JnCmh0dHBzOi8vbGlzdHMuMDEub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbnZkaW1t Cg==