From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B2F8C43381 for ; Tue, 12 Mar 2019 03:53:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC422214AF for ; Tue, 12 Mar 2019 03:53:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="jtHmXIg6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC422214AF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZmqYkVQpW30WmwxbC5uWaMRiYTZL5tJaFV1G6FR1QAU=; b=jtHmXIg6ZT3eZi 9iW20rJm3uGXddSq4mjg0MWp7e9wd9VXxX3wrAgzulGcHqcFtAfbkEDxvykrjX2MoY/iKp8TiOU2O CsZZe2ouMPUlLoRlqNVw46M99/06Msc1q9IZWC/i6r2o804NHraVEEUpZRPPlrSoto/gwOgOSgiqb Bu8mKCXKZHigSatsII2kByB8HdnjvrJsMz9nIcpXFF/LTElTIndhGL3QfatooJCvV4gSYIi9j+cOF P4kh9GL5hbWxfcJ5qT/bw0W036q+nIQNW2VMzumXBUDbPsw1SwsCRLfuSl353MQQyX2o9EOYj5y9P frlAVG9NviNErSrVe1OA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h3YTD-0005lX-6X; Tue, 12 Mar 2019 03:52:51 +0000 Received: from mail-qk1-f195.google.com ([209.85.222.195]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h3YT7-0005lB-PE for linux-arm-kernel@lists.infradead.org; Tue, 12 Mar 2019 03:52:47 +0000 Received: by mail-qk1-f195.google.com with SMTP id c189so649632qke.6 for ; Mon, 11 Mar 2019 20:52:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=E/UyB+xWk/xehLCQmoblfGNsmlWELdfSb6B+opPtGT0=; b=fUEDzl+6Q4EHc+YWhVU9sV5yCwJgSiBwXsc33aIPtd7168UX+pxRXaEi5eRx1Ss8wt bPmevP0VClULItqPicoS2OiTUsGloNeG/FeIJnqzCRWTAXoLxuneh6b4xRmb4ft0Yi88 kMOQJfXIl5Dy5dHulOnHMr97s/ppJpz4D029eEBun///BEp6Rwo2m/Zek0foIC4gOQMX ogeMx6vxLOkNnvwxdOguFYIkVnObKcYzNo9dRN4n7Zoa2d6Od1OSfGPkP71l+B6Fbtx5 lmgggFGo/Z1OHsFTjgT9Uf+ptsHipR0NDv7sCY5AQLqFfYxWzYRhm1DUNoJaPFGDwaMG qBBg== X-Gm-Message-State: APjAAAWHTc1Vu9Gpu4Caf8hMkRJO6lpwQ9pgK3/oO1t6CaApoWWDEV9V tUERXWkXW+oIXjimE0XaLH/8vg== X-Google-Smtp-Source: APXvYqw6vWNjN7roQr24NYlwA5iXQwWdK6cI38JZZ7g3cWXw6ntcj/yHKj2a9lBFrAD0H1GF5Tax7A== X-Received: by 2002:ae9:c30f:: with SMTP id n15mr4412813qkg.227.1552362764721; Mon, 11 Mar 2019 20:52:44 -0700 (PDT) Received: from redhat.com (pool-173-76-246-42.bstnma.fios.verizon.net. [173.76.246.42]) by smtp.gmail.com with ESMTPSA id o188sm4099469qkd.30.2019.03.11.20.52.43 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 11 Mar 2019 20:52:43 -0700 (PDT) Date: Mon, 11 Mar 2019 23:52:41 -0400 From: "Michael S. Tsirkin" To: Jason Wang Subject: Re: [RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap() Message-ID: <20190311235140-mutt-send-email-mst@kernel.org> References: <20190308141220.GA21082@infradead.org> <56374231-7ba7-0227-8d6d-4d968d71b4d6@redhat.com> <20190311095405-mutt-send-email-mst@kernel.org> <20190311.111413.1140896328197448401.davem@davemloft.net> <6b6dcc4a-2f08-ba67-0423-35787f3b966c@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <6b6dcc4a-2f08-ba67-0423-35787f3b966c@redhat.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190311_205245_821568_9F05414E X-CRM114-Status: GOOD ( 17.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aarcange@redhat.com, linux-parisc@vger.kernel.org, kvm@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, peterx@redhat.com, virtualization@lists.linux-foundation.org, hch@infradead.org, linux-mm@kvack.org, David Miller , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVHVlLCBNYXIgMTIsIDIwMTkgYXQgMTA6NTk6MDlBTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDE5LzMvMTIg5LiK5Y2IMjoxNCwgRGF2aWQgTWlsbGVyIHdyb3RlOgo+ID4g RnJvbTogIk1pY2hhZWwgUy4gVHNpcmtpbiIgPG1zdEByZWRoYXQuY29tPgo+ID4gRGF0ZTogTW9u LCAxMSBNYXIgMjAxOSAwOTo1OToyOCAtMDQwMAo+ID4gCj4gPiA+IE9uIE1vbiwgTWFyIDExLCAy MDE5IGF0IDAzOjEzOjE3UE0gKzA4MDAsIEphc29uIFdhbmcgd3JvdGU6Cj4gPiA+ID4gT24gMjAx OS8zLzgg5LiL5Y2IMTA6MTIsIENocmlzdG9waCBIZWxsd2lnIHdyb3RlOgo+ID4gPiA+ID4gT24g V2VkLCBNYXIgMDYsIDIwMTkgYXQgMDI6MTg6MDdBTSAtMDUwMCwgSmFzb24gV2FuZyB3cm90ZToK PiA+ID4gPiA+ID4gVGhpcyBzZXJpZXMgdHJpZXMgdG8gYWNjZXNzIHZpcnRxdWV1ZSBtZXRhZGF0 YSB0aHJvdWdoIGtlcm5lbCB2aXJ0dWFsCj4gPiA+ID4gPiA+IGFkZHJlc3MgaW5zdGVhZCBvZiBj b3B5X3VzZXIoKSBmcmllbmRzIHNpbmNlIHRoZXkgaGFkIHRvbyBtdWNoCj4gPiA+ID4gPiA+IG92 ZXJoZWFkcyBsaWtlIGNoZWNrcywgc3BlYyBiYXJyaWVycyBvciBldmVuIGhhcmR3YXJlIGZlYXR1 cmUKPiA+ID4gPiA+ID4gdG9nZ2xpbmcuIFRoaXMgaXMgZG9uZSB0aHJvdWdoIHNldHVwIGtlcm5l bCBhZGRyZXNzIHRocm91Z2ggdm1hcCgpIGFuZAo+ID4gPiA+ID4gPiByZXNpZ3RlciBNTVUgbm90 aWZpZXIgZm9yIGludmFsaWRhdGlvbi4KPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+IFRlc3Qgc2hv d3MgYWJvdXQgMjQlIGltcHJvdmVtZW50IG9uIFRYIFBQUy4gVENQX1NUUkVBTSBkb2Vzbid0IHNl ZQo+ID4gPiA+ID4gPiBvYnZpb3VzIGltcHJvdmVtZW50Lgo+ID4gPiA+ID4gSG93IGlzIHRoaXMg Z29pbmcgdG8gd29yayBmb3IgQ1BVcyB3aXRoIHZpcnR1YWxseSB0YWdnZWQgY2FjaGVzPwo+ID4g PiA+IAo+ID4gPiA+IEFueXRoaW5nIGRpZmZlcmVudCB0aGF0IHlvdSB3b3JyeT8KPiA+ID4gSWYg Y2FjaGVzIGhhdmUgdmlydHVhbCB0YWdzIHRoZW4ga2VybmVsIGFuZCB1c2Vyc3BhY2UgdmlldyBv ZiBtZW1vcnkKPiA+ID4gbWlnaHQgbm90IGJlIGF1dG9tYXRpY2FsbHkgaW4gc3luYyBpZiB0aGV5 IGFjY2VzcyBtZW1vcnkKPiA+ID4gdGhyb3VnaCBkaWZmZXJlbnQgdmlydHVhbCBhZGRyZXNzZXMu IFlvdSBuZWVkIHRvIGRvIHRoaW5ncyBsaWtlCj4gPiA+IGZsdXNoX2NhY2hlX3BhZ2UsIHByb2Jh Ymx5IG11bHRpcGxlIHRpbWVzLgo+ID4gImZsdXNoX2RjYWNoZV9wYWdlKCkiCj4gCj4gCj4gSSBn ZXQgdGhpcy4gVGhlbiBJIHRoaW5rIHRoZSBjdXJyZW50IHNldF9iaXRfdG9fdXNlcigpIGlzIHN1 c3BpY2lvdXMsIHdlCj4gcHJvYmFibHkgbWlzcyBhIGZsdXNoX2RjYWNoZV9wYWdlKCkgdGhlcmU6 Cj4gCj4gCj4gc3RhdGljIGludCBzZXRfYml0X3RvX3VzZXIoaW50IG5yLCB2b2lkIF9fdXNlciAq YWRkcikKPiB7Cj4gwqDCoMKgwqDCoMKgwqAgdW5zaWduZWQgbG9uZyBsb2cgPSAodW5zaWduZWQg bG9uZylhZGRyOwo+IMKgwqDCoMKgwqDCoMKgIHN0cnVjdCBwYWdlICpwYWdlOwo+IMKgwqDCoMKg wqDCoMKgIHZvaWQgKmJhc2U7Cj4gwqDCoMKgwqDCoMKgwqAgaW50IGJpdCA9IG5yICsgKGxvZyAl IFBBR0VfU0laRSkgKiA4Owo+IMKgwqDCoMKgwqDCoMKgIGludCByOwo+IAo+IMKgwqDCoMKgwqDC oMKgIHIgPSBnZXRfdXNlcl9wYWdlc19mYXN0KGxvZywgMSwgMSwgJnBhZ2UpOwo+IMKgwqDCoMKg wqDCoMKgIGlmIChyIDwgMCkKPiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgcmV0dXJu IHI7Cj4gwqDCoMKgwqDCoMKgwqAgQlVHX09OKHIgIT0gMSk7Cj4gwqDCoMKgwqDCoMKgwqAgYmFz ZSA9IGttYXBfYXRvbWljKHBhZ2UpOwo+IMKgwqDCoMKgwqDCoMKgIHNldF9iaXQoYml0LCBiYXNl KTsKPiDCoMKgwqDCoMKgwqDCoCBrdW5tYXBfYXRvbWljKGJhc2UpOwo+IMKgwqDCoMKgwqDCoMKg IHNldF9wYWdlX2RpcnR5X2xvY2socGFnZSk7Cj4gwqDCoMKgwqDCoMKgwqAgcHV0X3BhZ2UocGFn ZSk7Cj4gwqDCoMKgwqDCoMKgwqAgcmV0dXJuIDA7Cj4gfQo+IAo+IFRoYW5rcwoKSSB0aGluayB5 b3UgYXJlIHJpZ2h0LiBUaGUgY29ycmVjdCBmaXggdGhvdWdoIGlzIHRvIHJlLWltcGxlbWVudApp dCB1c2luZyBhc20gYW5kIGhhbmRsaW5nIHBhZ2VmYXVsdCwgbm90IGd1cC4KVGhyZWUgYXRvbWlj IG9wcyBwZXIgYml0IGlzIHdheSB0byBleHBlbnNpdmUuCgotLSAKTVNUCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxp bmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3Rz LmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==