From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: [PATCH v4 0/6] virtio core DMA API conversion Date: Tue, 10 Nov 2015 13:04:36 +1100 Message-ID: <1447121076.31884.61.camel@kernel.crashing.org> References: <20151109133624-mutt-send-email-mst@redhat.com> <1447109937.31884.42.camel@kernel.crashing.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Andy Lutomirski Cc: Joerg Roedel , KVM , linux-s390 , "Michael S. Tsirkin" , Sebastian Ott , "linux-kernel@vger.kernel.org" , Christoph Hellwig , Christian Borntraeger , Andy Lutomirski , sparclinux@vger.kernel.org, Paolo Bonzini , Linux Virtualization , David Woodhouse , "David S. Miller" , Martin Schwidefsky List-Id: virtualization@lists.linuxfoundation.org T24gTW9uLCAyMDE1LTExLTA5IGF0IDE2OjQ2IC0wODAwLCBBbmR5IEx1dG9taXJza2kgd3JvdGU6 Cj4gVGhlIHByb2JsZW0gaGVyZSBpcyB0aGF0IGluIHNvbWUgb2YgdGhlIHByb2JsZW1hdGljIGNh c2VzIHRoZSB2aXJ0aW8KPiBkcml2ZXIgbWF5IG5vdCBldmVuIGJlIGxvYWRlZC7CoCBJZiBzb21l b25lIHJ1bnMgYW4gTDEgZ3Vlc3Qgd2l0aCBhbgo+IElPTU1VLWJ5cGFzc2luZyB2aXJ0aW8gZGV2 aWNlIGFuZCBhc3NpZ25zIGl0IHRvIEwyIHVzaW5nIHZmaW8sIHRoZW4KPiAqYm9vbSogTDEgY3Jh c2hlcy7CoCAoU2FtZSBpZiwgc2F5LCBEUERLIGdldHMgdXNlZCwgSSB0aGluay4pCj4gCj4gPgo+ ID4gVGhlIG9ubHkgd2F5IG91dCBvZiB0aGlzIHdoaWxlIGtlZXBpbmcgdGhlICJwbGF0Zm9ybSIg c3R1ZmYgd291bGQgYmUgdG8KPiA+IGFsc28gYnVtcCBzb21lIGtpbmQgb2YgdmVyc2lvbiBpbiB0 aGUgdmlydGlvIGNvbmZpZyAob3IgUENJIGhlYWRlcikuIEkKPiA+IGhhdmUgbm8gb3RoZXIgd2F5 IHRvIGRpZmZlcmVuY2lhdGUgYmV0d2VlbiAidGhpcyBpcyBhbiBvbGQgcWVtdSB0aGF0Cj4gPiBk b2Vzbid0IGRvIHRoZSAnYnlwYXNzIHByb3BlcnR5JyB5ZXQiIGZyb20gInRoaXMgaXMgYSB2aXJ0 aW8gZGV2aWNlCj4gPiB0aGF0IGRvZXNuJ3QgYnlwYXNzIi4KPiA+Cj4gPiBBbnkgYmV0dGVyIGlk ZWEgPwo+IAo+IEknZCBzdWdnZXN0IHRoYXQsIGluIHRoZSBhYnNlbmNlIG9mIHRoZSBuZXcgRFQg YmluZGluZywgd2UgYXNzdW1lIHRoYXQKPiBhbnkgUENJIGRldmljZSB3aXRoIHRoZSB2aXJ0aW8g dmVuZG9yIElEIGlzIHBhc3N0aHJvdWdoIG9uIHBvd2VycGMuwqAgSQo+IGNhbiBkbyB0aGlzIGlu IHRoZSB2aXJ0aW8gZHJpdmVyLCBidXQgaWYgaXQncyBpbiB0aGUgcGxhdGZvcm0gY29kZQo+IHRo ZW4gdmZpbyBnZXRzIGl0IHJpZ2h0IHRvbyAoaS5lLiBmYWlscyB0byBsb2FkKS4KClRoZSBwcm9i bGVtIGlzIHRoZXJlIGlzbid0ICphKiB2aXJ0aW8gdmVuZG9yIElELiBJdCdzIHRoZSBSZWRIYXQg dmVuZG9yCklEIHdoaWNoIHdpbGwgYmUgdXNlZCBieSBtb3JlIHRoYW4ganVzdCB2aXJ0aW8sIHNv IHdlIG5lZWQgdG8Kc3BlY2lmaWNhbGx5IGxpc3QgdGhlIGRldmljZXMuCgpBZGRpdGlvbmFsbHks IHRoYXQgc3RpbGwgbWVhbnMgdGhhdCBvbmNlIHdlIGhhdmUgYSB2aXJ0aW8gZGV2aWNlIHRoYXQK YWN0dWFsbHkgdXNlcyB0aGUgaW9tbXUsIHBvd2VycGMgd2lsbCBub3Qgd29yayBzaW5jZSB0aGUg Indvcmthcm91bmQiCmFib3ZlIHdpbGwga2ljayBpbi4KClRoZSAiaW4gYWJzZW5jZSBvZiB0aGUg bmV3IERUIGJpbmRpbmciIGRvZXNuJ3QgbWFrZSB0aGF0IG11Y2ggc2Vuc2UuCgpUaG9zZSBwbGF0 Zm9ybXMgdXNlIGRldmljZS10cmVlcyBkZWZpbmVkIHNpbmNlIHRoZSBkYXduIG9mIGFnZXMgYnkK YWN0dWFsIG9wZW4gZmlybXdhcmUgaW1wbGVtZW50YXRpb25zLCB0aGV5IGVpdGhlciBoYXZlIG5v IGlvbW11CnJlcHJlc2VudGF0aW9uIGluIHRoZXJlIChNYWNzLCB0aGUgcGxhdGZvcm0gY29kZSBo b29rcyBpdCBhbGwgdXApIG9yCmhhdmUgdmFyaW91cyBwcm9wZXJ0aWVzIHJlbGF0ZWQgdG8gdGhl IGlvbW11IGJ1dCBubyBjb25jZXB0IG9mICJieXBhc3MiCmluIHRoZXJlLgoKV2UgY2FuICphZGQq IGEgbmV3IHByb3BlcnR5IHVuZGVyIHNvbWUgY2lyY3Vtc3RhbmNlcyB0aGF0IGluZGljYXRlcyBh CmJ5cGFzcyBvbiBhIHBlci1kZXZpY2UgYmFzaXMsIGhvd2V2ZXIgdGhhdCBkb2Vzbid0IGNvbXBs ZXRlbHkgc29sdmUgaXQ6CgrCoCAtIEFzIEkgc2FpZCBhYm92ZSwgd2hhdCBkb2VzIHRoZSBhYnNl bmNlIG9mIHRoYXQgcHJvcGVydHkgbWVhbiA/IEFuCm9sZCBxZW11IHRoYXQgZG9lcyBieXBhc3Mg b24gYWxsIHZpcnRpbyBvciBhIG5ldyBxZW11IHRyeWluZyB0byB0ZWxsCnlvdSB0aGF0IHRoZSB2 aXJ0aW8gZGV2aWNlIGFjdHVhbGx5IGRvZXMgdXNlIHRoZSBpb21tdSAob3Igc29tZSBvdGhlcgpl bnZpcm9ubWVudCB0aGF0IGlzbid0IHFlbXUpID8KCsKgIC0gT24gdGhpbmdzIGxpa2UgbWFjcywg dGhlIGRldmljZS10cmVlIGlzIGdlbmVyYXRlZCBieSBvcGVuYmlvcywgaXQKd291bGQgaGF2ZSB0 byBoYXZlIHNvbWUgYWRkZWQgbG9naWMgdG8gdHJ5IHRvIGZpZ3VyZSB0aGF0IG91dCwgd2hpY2gK bWVhbnMgaXQgbmVlZHMgdG8ga25vdyAqdmlhIGRpZmZlcmVudCBtZWFucyogdGhhdCBzb21lIG9y IGFsbCB2aXJ0aW8KZGV2aWNlcyBieXBhc3MgdGhlIGlvbW11LgoKSSB0aHVzIGdvIGJhY2sgdG8g bXkgb3JpZ2luYWwgc3RhdGVtZW50LCBpdCdzIGEgTE9UIGVhc2llciB0byBoYW5kbGUgaWYKdGhl IGRldmljZSBpdHNlbGYgaXMgc2VsZiBkZXNjcmliaW5nLCBpbmRpY2F0aW5nIHdoZXRoZXIgaXQg aXMgc2V0IHRvCmJ5cGFzcyBhIGhvc3QgaW9tbXUgb3Igbm90LiBGb3IgTDEtPkwyLCB3ZWxsLCB0 aGF0IHdvdWxkbid0IGJlIHRoZQpmaXJzdCB0aW1lIHFlbXUvVkZJTyBwbGF5cyB0cmlja3Mgd2l0 aCB0aGUgcGFzc2VkIHRocm91Z2ggZGV2aWNlCmNvbmZpZ3VyYXRpb24gc3BhY2UuLi4KCk5vdGUg dGhhdCB0aGUgYWJvdmUgY2FuIGJlIHNvbHZlZCB2aWEgc29tZSBraW5kIG9mIGNvbXByb21pc2U6 IFRoZQpkZXZpY2Ugc2VsZiBkZXNjcmliZXMgdGhlIGFiaWxpdHkgdG8gaG9ub3IgdGhlIGlvbW11 LCBhbG9uZyB3aXRoIHRoZQpwcm9wZXJ0eSAob3IgQUNQSSB0YWJsZSBlbnRyeSkgdGhhdCBpbmRp Y2F0ZXMgd2hldGhlciBvciBub3QgaXQgZG9lcy4KCklFLiBXZSBjb3VsZCB1c2UgdGhlIHJldmlz aW9uIG9yIFByb2dJZiBmaWVsZCBvZiB0aGUgY29uZmlnIHNwYWNlIGZvcgpleGFtcGxlLiBPciBz b21ldGhpbmcgaW4gdmlydGlvIGNvbmZpZy4gSWYgaXQncyBhbiAib2xkIiBkZXZpY2UsIHdlCmtu b3cgaXQgYWx3YXlzIGJ5cGFzcy4gSWYgaXQncyBhIG5ldyBkZXZpY2UsIHdlIGtub3cgaXQgb25s eSBieXBhc3NlcwppZiB0aGUgY29ycmVzcG9uZGluZyBwcm9wZXJ0eSBpcyBpbi4gSSBzdGlsbCB3 b3VsZCBoYXZlIHRvIHNvcnQgb3V0IHRoZQpvcGVuYmlvcyBjYXNlIGZvciBtYWMgYW1vbmcgb3Ro ZXJzIGJ1dCBpdCdzIGF0IGxlYXN0IGEgd29ya2FibGUKZGlyZWN0aW9uLgoKQlRXLiBEb24ndCB5 b3UgaGF2ZSBhIHNpbWlsYXIgcHJvYmxlbSBvbiB4ODYgdGhhdCB0b2RheSBxZW11IGNsYWltcwp0 aGF0IGV2ZXJ5dGhpbmcgaG9ub3JzIHRoZSBpb21tdSBpbiBBQ1BJID8KClVubGVzcyBzb21lYm9k eSBjYW4gY29tZSB1cCB3aXRoIGEgYmV0dGVyIGlkZWEuLi4KCkNoZWVycywKQmVuLgoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmlydHVhbGl6YXRpb24g bWFpbGluZyBsaXN0ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0 dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL3ZpcnR1YWxp emF0aW9u