From mboxrd@z Thu Jan 1 00:00:00 1970 From: Haozhong Zhang Subject: Re: [RFC Design Doc] Add vNVDIMM support for Xen Date: Thu, 10 Mar 2016 11:27:01 +0800 Message-ID: <20160310032700.GA3963@hz-desktop.sh.intel.com> References: <20160301073927.GA15170@hz-desktop.sh.intel.com> <22229.57468.457255.85569@mariner.uk.xensource.com> <20160301184911.GA19728@char.us.oracle.com> <20160302071452.GB4064@hz-desktop.sh.intel.com> <56D6F2C702000078000D8509@prv-mh.provo.novell.com> <20160304022025.GA31303@hz-desktop.sh.intel.com> <20160308091519.GA6320@hz-desktop.sh.intel.com> <56DEA91202000078000DA449@prv-mh.provo.novell.com> <20160309122259.GA6310@hz-desktop.sh.intel.com> <56E05A9A02000078000DAEC4@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <56E05A9A02000078000DAEC4@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: Juergen Gross , Kevin Tian , Wei Liu , Ian Campbell , Stefano Stabellini , George Dunlap , Andrew Cooper , Ian Jackson , "xen-devel@lists.xen.org" , Jun Nakajima , Xiao Guangrong , Keir Fraser List-Id: xen-devel@lists.xenproject.org T24gMDMvMDkvMTYgMDk6MTcsIEphbiBCZXVsaWNoIHdyb3RlOgo+ID4+PiBPbiAwOS4wMy4xNiBh dCAxMzoyMiwgPGhhb3pob25nLnpoYW5nQGludGVsLmNvbT4gd3JvdGU6Cj4gPiBPbiAwMy8wOC8x NiAwMjoyNywgSmFuIEJldWxpY2ggd3JvdGU6Cj4gPj4gPj4+IE9uIDA4LjAzLjE2IGF0IDEwOjE1 LCA8aGFvemhvbmcuemhhbmdAaW50ZWwuY29tPiB3cm90ZToKWy4uLl0KPiA+IEkgc2hvdWxkIHJl ZXhwbGFpbiB0aGUgY2hvaWNlIG9mIGRhdGEgc3RydWN0dXJlcyBhbmQgd2hlcmUgdG8gcHV0IHRo ZW0uCj4gPiAKPiA+IEZvciBoYW5kbGluZyBNQ0UgZm9yIE5WRElNTSwgd2UgbmVlZCB0byB0cmFj ayBmb2xsb3dpbmcgZGF0YToKPiA+ICgxKSBTUEEgcmFuZ2VzIG9mIGhvc3QgTlZESU1NcyAob25l IHJhbmdlIHBlciBwbWVtIGludGVybGVhdmUgc2V0KSwgd2hpY2ggYXJlCj4gPiAgICAgdXNlZCB0 byBjaGVjayB3aGV0aGVyIGEgTUNFIGlzIGZvciBOVkRJTU0uCj4gPiAoMikgR0ZOIHRvIHdoaWNo IGEgTlZESU1NIHBhZ2UgaXMgbWFwcGVkLCB3aGljaCBpcyB1c2VkIHRvIGRldGVybWluZSB0aGUK PiA+ICAgICBhZGRyZXNzIHB1dCBpbiB2TUNFLgo+ID4gKDMpIHRoZSBkb21haW4gdG8gd2hpY2gg YSBOVkRJTU0gcGFnZSBpcyBtYXBwZWQsIHdoaWNoIGlzIHVzZWQgdG8KPiA+ICAgICBkZXRlcm1p bmUgd2hldGhlciBhIHZNQ0UgbmVlZHMgdG8gYmUgaW5qZWN0ZWQgYW5kIHdoZXJlIGl0IHdpbGwg YmUKPiA+ICAgICBpbmplY3RlZC4KPiA+ICg0KSBhIGZsYWcgdG8gbWFyayB3aGV0aGVyIGEgTlZE SU1NIHBhZ2UgaXMgYnJva2VuLCB3aGljaCBpcyB1c2VkIHRvCj4gPiAgICAgYXZvaWQgbWFwcGlu ZyBicm9rZW4gcGFnZSB0byBndWVzdHMuCj4gPiAKPiA+IEZvciBncmFudGluZyBOVkRJTU0gcGFn ZXMgKGUuZy4geGVuLWJsa2JhY2svbmV0YmFjayksCj4gPiAoNSkgYSByZWZlcmVuY2UgY291bnRl ciBpcyBuZWVkZWQgZm9yIGVhY2ggTlZESU1NIHBhZ2UKPiA+IAo+ID4gQWJvdmUgZGF0YSBjYW4g YmUgb3JnYW5pemVkIGFzIGJlbG93Ogo+ID4gCj4gPiAqIEZvciAoMSkgU1BBIHJhbmdlcywgd2Ug Y2FuIHJlY29yZCB0aGVtIGluIGEgZ2xvYmFsIGRhdGEgc3RydWN0dXJlLAo+ID4gICBlLmcuIGEg bGlzdAo+ID4gCj4gPiAgICAgc3RydWN0IGxpc3RfaGVhZCBudmRpbW1faXNldF9saXN0Owo+ID4g Cj4gPiAgICAgc3RydWN0IG52ZGltbV9pc2V0Cj4gPiAgICAgewo+ID4gICAgICAgICAgdWludDY0 X3QgICAgICAgICAgIGJhc2U7ICAvKiBzdGFydGluZyBTUEEgb2YgdGhpcyBpbnRlcmxlYXZlIHNl dCAqLwo+ID4gICAgICAgICAgdWludDY0X3QgICAgICAgICAgIHNpemU7ICAvKiBzaXplIG9mIHRo aXMgaW50ZXJsZWF2ZSBzZXQgKi8KPiA+ICAgICAgICAgIHN0cnVjdCBudmRpbW1fcGFnZSAqcGFn ZXM7LyogaW5mb3JtYXRpb24gZm9yIGluZGl2aWR1YWwgcGFnZXMgaW4gdGhpcyBpbnRlcmxlYXZl IHNldCAqLwo+ID4gICAgICAgICAgc3RydWN0IGxpc3RfaGVhZCAgIGxpc3Q7Cj4gPiAgICAgfTsK PiA+IAo+ID4gKiBGb3IgKDIpIEdGTiwgYW4gaW50dWl0aXZlIHBsYWNlIHRvIGdldCB0aGlzIGlu Zm9ybWF0aW9uIGlzIGZyb20gTTJQCj4gPiAgIHRhYmxlIG1hY2hpbmVfdG9fcGh5c19tYXBwaW5n W10uICBIb3dldmVyLCB0aGUgYWRkcmVzcyBvZiBOVkRJTU0gaXMKPiA+ICAgbm90IHJlcXVpcmVk IHRvIGJlIGNvbnRpZ3VvdXMgd2l0aCBub3JtYWwgcmFtLCBzbywgaWYgTlZESU1NIHN0YXJ0cwo+ ID4gICBmcm9tIGFuIGFkZHJlc3MgdGhhdCBpcyBtdWNoIGhpZ2hlciB0aGFuIHRoZSBlbmQgYWRk cmVzcyBvZiBub3JtYWwKPiA+ICAgcmFtLCBpdCBtYXkgcmVzdWx0IGluIGEgTTJQIHRhYmxlIHRo YXQgbWF5YmUgdG9vIGxhcmdlIHRvIGZpdCBpbiB0aGUKPiA+ICAgbm9ybWFsIHJhbS4gVGhlcmVm b3JlLCB3ZSBjaG9vc2UgdG8gbm90IHB1dCBHRk5zIG9mIE5WRElNTSBpbiBNMlAKPiA+ICAgdGFi bGUuCj4gCj4gQW55IHBhZ2UgdGhhdCBfbWF5XyBiZSB1c2VkIGJ5IGEgZ3Vlc3QgYXMgbm9ybWFs IFJBTSBwYWdlCj4gbXVzdCBoYXZlIGl0cyBtYWNoLT5waHlzIHRyYW5zbGF0aW9uIGVudGVyZWQg aW4gdGhlIE0yUC4gVGhhdCdzCj4gYmVjYXVzZSBhIHIvbyB2YXJpYW50IG9mIHRoYXQgdGFibGUg aXMgcGFydCBvZiB0aGUgaHlwZXJ2aXNvciBBQkkKPiBmb3IgUFYgZ3Vlc3RzLiBTaXplIGNvbnNp ZGVyYXRpb25zIHNpbXBseSBkb24ndCBhcHBseSBoZXJlIC0gdGhlCj4gdGFibGUgbWF5IGJlIHNw YXJzZSAoZ3Vlc3RzIGFyZSByZXF1aXJlZCB0byBkZWFsIHdpdGggYWNjZXNzZXMKPiBwb3RlbnRp YWxseSBmYXVsdGluZyksIGFuZCB0aGUgMjU2R2Igb2YgdmlydHVhbCBhZGRyZXNzIHNwYWNlIHNl dAo+IGFzaWRlIGZvciBpdCBjb3ZlciBhbGwgbWVtb3J5IHVwIHRvIHRoZSA0Ny1iaXQgYm91bmRh cnkgKHRoZXJlJ3MKPiByb29tIGZvciBkb3VibGluZyB0aGlzKS4gTWVtb3J5IGF0IGFkZHJlc3Nl cyB3aXRoIGJpdCA0NyAob3IKPiBoaWdoZXIpIHNldCB3b3VsZCBuZWVkIGEgY29tcGxldGUgb3Zl cmhhdWwgb2YgdGhhdCBtZWNoYW5pc20sCj4gYW5kIHdoYXRldmVyIG5ldyBtZWNoYW5pc20gd2Ug bWF5IHBpY2sgd291bGQgbWVhbiBvbGQKPiBndWVzdHMgd29uI3QgYmUgYWJsZSB0byBiZW5lZml0 Lgo+CgpPSywgdGhlbiB3ZSBjYW4gdXNlIE0yUCB0byBnZXQgUEZOcyBvZiBOVkRJTU0gcGFnZXMu IEFuZCAuLi4KCj4gPiAgIEFub3RoZXIgcG9zc2libGUgc29sdXRpb24gaXMgdG8gZXh0ZW5kIHBh Z2VfaW5mbyB0byBpbmNsdWRlIEdGTiBmb3IKPiA+ICAgTlZESU1NIGFuZCB1c2UgZnJhbWVfdGFi bGUuIEEgYmVuZWZpdCBvZiB0aGlzIHNvbHV0aW9uIGlzIHRoYXQgb3RoZXIKPiA+ICAgZGF0YSAo MyktKDUpIGNhbiBiZSBnb3QgZnJvbSBwYWdlX2luZm8gYXMgd2VsbC4gSG93ZXZlciwgZHVlIHRv IHRoZQo+ID4gICBzYW1lIHJlYXNvbiBmb3IgbWFjaGluZV90b19waHlzX21hcHBpbmdbXSBhbmQg dGhlIGNvbmNlcm4gdGhhdCB0aGUKPiA+ICAgbGFyZ2UgbnVtYmVyIG9mIHBhZ2VfaW5mbyBzdHJ1 Y3R1cmVzIHJlcXVpcmVkIGZvciBsYXJnZSBOVkRJTU1zIG1heQo+ID4gICBjb25zdW1lIGxvdHMg b2YgcmFtLCBwYWdlX2luZm8gYW5kIGZyYW1lX3RhYmxlIHNlZW1zIG5vdCBhIGdvb2QgcGxhY2UK PiA+ICAgZWl0aGVyLgo+IAo+IEZvciB0aGlzIHBhcnRpY3VsYXIgaXRlbSBzdHJ1Y3QgcGFnZV9p bmZvIGlzIHRoZSB3cm9uZyBwbGFjZQo+IGFueXdheSwgZHVlIHRvIHdoYXQgSSd2ZSBzYWlkIGFi b3ZlLiBBbHNvIGV4dGVuc2lvbgo+IHN1Z2dlc3Rpb25zIG9mIHN0cnVjdCBwYWdlX2luZm8gYXJl IHF1aXRlIHByb2JsZW1hdGljLCBhcyBhbnkKPiBzdWNoIGltcGxpZXMgYSBtZWFzdXJhYmxlIGlu Y3JlYXNlIG9uIHRoZSBtZW1vcnkgb3ZlcmhlYWQKPiB0aGUgaHlwZXJ2aXNvciBpbmN1cnMuIFBs dXMgdGhlIHN0cnVjdHVyZSByaWdodCBub3cgaXMgKHdpdGggdGhlCj4gZXhjZXB0aW9uIG9mIHRo ZSBiaWdtZW0gY29uZmlndXJhdGlvbikgYSBjYXJlZnVsbHkgYXJyYW5nZWQKPiBmb3IgcG93ZXIg b2YgdHdvIGluIHNpemUuCj4gCj4gPiAqIEF0IHRoZSBlbmQsIHdlIGNob29zZSB0byBpbnRyb2R1 Y2UgYSBuZXcgZGF0YSBzdHJ1Y3R1cmUgZm9yIGFib3ZlCj4gPiAgIHBlci1wYWdlIGRhdGEgKDIp LSg1KQo+ID4gCj4gPiAgICAgc3RydWN0IG52ZGltbV9wYWdlCj4gPiAgICAgewo+ID4gICAgICAg ICBzdHJ1Y3QgZG9tYWluICpkb21haW47ICAgIC8qIGZvciAoMykgKi8KPiA+ICAgICAgICAgdWlu dDY0X3QgICAgICBnZm47ICAgICAgICAvKiBmb3IgKDIpICovCj4gPiAgICAgICAgIHVuc2lnbmVk IGxvbmcgY291bnRfaW5mbzsgLyogZm9yICg0KSBhbmQgKDUpLCBzYW1lIGFzIHBhZ2VfaW5mby0+ Y291bnRfaW5mbyAqLwo+ID4gICAgICAgICAvKiBvdGhlciBmaWVsZHMgaWYgbmVlZGVkLCBlLmcu IGxvY2sgKi8KPiA+ICAgICB9Cj4gCj4gU28gdGhhdCBhZ2FpbiBsZWF2ZXMgdW5hZGRyZXNzZWQg dGhlIHF1ZXN0aW9uIG9mIHdoYXQgeW91Cj4gaW1wbHkgdG8gZG8gd2hlbiBhIGd1ZXN0IGVsZWN0 cyB0byB1c2Ugc3VjaCBhIHBhZ2UgYXMgcGFnZQo+IHRhYmxlLiBJJ20gYWZyYWlkIGFueSBhdHRl bXB0IG9mIHlvdXJzIHRvIGludmVudCBzb21ldGhpbmcgdGhhdAo+IGlzIG5vdCBzdHJ1Y3QgcGFn ZV9pbmZvIHdpbGwgbm90IGJlIHN1aXRhYmxlIGZvciBhbGwgcG9zc2libGUgbmVlZHMuCj4KCi4u LiB3ZSBjYW4gdXNlIHBhZ2VfaW5mbyBzdHJ1Y3QgcmF0aGVyIHRoYW4gbnZkaW1tX3BhZ2Ugc3Ry dWN0IGZvcgpOVkRJTU0gcGFnZXMgYW5kIGNhbiBiZSBhYmxlIHRvIGJlbmVmaXQgZnJvbSB3aGF0 ZXZlciBoYXZlIGJlZW4gZG9uZQp3aXRoIHBhZ2VfaW5mby4KCj4gPiAgIE9uIGVhY2ggTlZESU1N IGludGVybGVhdmUgc2V0LCB3ZSBjb3VsZCByZXNlcnZlIGFuIGFyZWEgdG8gcGxhY2UgYW4KPiA+ ICAgYXJyYXkgb2YgbnZkaW1tX3BhZ2Ugc3RydWN0dXJlcyBmb3IgcGFnZXMgaW4gdGhhdCBpbnRl cmxlYXZlIHNldC4gSW4KPiA+ICAgYWRkaXRpb24sIHRoZSBjb3JyZXNwb25kaW5nIGdsb2JhbCBu dmRpbW1faXNldCBzdHJ1Y3R1cmUgaXMgc2V0IHRvCj4gPiAgIHBvaW50IHRvIHRoaXMgYXJyYXkg dmlhIGl0cyAncGFnZXMnIGZpZWxkLgo+IAo+IEFuZCBJIHNlZSBubyBwcm9ibGVtIGRvaW5nIGV4 YWN0bHkgdGhhdCwganVzdCBmb3IgYW4gYXJyYXkgb2YKPiBzdHJ1Y3QgcGFnZV9pbmZvLgo+CgpZ ZXMsIHBhZ2VfaW5mbyBhcnJheXMuCgpCZWNhdXNlIHBhZ2VfaW5mbyBzdHJ1Y3RzIGZvciBOVkRJ TU0gbWF5IGJlIHB1dCBpbiBOVkRJTU0sIGV4aXN0aW5nIGNvZGUKdGhhdCBnZXRzIHBhZ2VfaW5m byBmcm9tIGZyYW1lX3RhYmxlIG5lZWRzIHRvIGJlIGFkanVzdGVkIGZvciBOVkRJTU0KcGFnZXMg dG8gdXNlIG52ZGltbV9pc2V0IHN0cnVjdHMgaW5zdGVhZCwgaW5jbHVkaW5nIF9fbWZuX3RvX3Bh Z2UsCl9fcGFnZV90b19tZm4sIHBhZ2VfdG9fc3BhZ2UsIHNwYWdlX3RvX3BhZ2UsIHBhZ2VfdG9f cGR4LCBwZHhfdG9fcGFnZSwKZXRjLgoKPiA+ICAgT25lIHRoaW5nIEkgaGF2ZSBubyBpZGVhIGlz IHdoYXQgcGVyY2VudGFnZSBvZiByYW0gdXNlZC9yZXNlcnZlZCBieQo+ID4gICBYZW4gaXRzZWxm IGlzIGNvbnNpZGVyZWQgYXMgYWNjZXB0YWJsZS4gSWYgaXQgZXhpc3RzIGFuZCBhIGJvb3QKPiA+ ICAgcGFyYW1ldGVyIGlzIGdpdmVuLCB3ZSBjb3VsZCBsZXQgWGVuIGNob29zZSB0aGUgZmFzdGVy IHJhbSB3aGVuCj4gPiAgIHRoZSBwZXJjZW50YWdlIGhhcyBub3QgYmVlbiByZWFjaGVkLgo+IAo+ IEkgdGhpbmsgYSBjb25zZXJ2YXRpdmUgZGVmYXVsdCB3b3VsZCBiZSB0byBhbHdheXMgcGxhY2Ug dGhlCj4gY29udHJvbCBzdHJ1Y3R1cmVzIGluIE5WRElNTSBzcGFjZSwgdW5sZXNzIHJlcXVlc3Rl ZCB0byBiZQo+IHB1dCBpbiBSQU0gdmlhIGNvbW1hbmQgbGluZSBvcHRpb24uCj4KCkZvciB0aGUg Zmlyc3QgdmVyc2lvbiwgSSBwbGFuIHRvIGltcGxlbWVudCBhYm92ZSB0aGF0IHB1dHMgYWxsIHBh Z2VfaW5mbwpzdHJ1Y3RzIGZvciBOVkRJTU0gZWl0aGVyIGNvbXBsZXRlbHkgaW4gTlZESU1NIG9y IGNvbXBsZXRlbHkgaW4gbm9ybWFsCnJhbS4gSW4gdGhlIGZ1dHVyZSwgd2UgbWF5IGludHJvZHVj ZSBzb21lIHNvZnR3YXJlIGNhY2hlIG1lY2hhbmlzbSB0aGF0CmNhY2hlcyB0aGUgbW9zdCBmcmVx dWVudGx5IHVzZWQgTlZESU1NIHBhZ2VfaW5mbyBpbiB0aGUgbm9ybWFsIHJhbS4KClRoYW5rcywK SGFvemhvbmcKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Clhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cDovL2xp c3RzLnhlbi5vcmcveGVuLWRldmVsCg==