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=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 7DB76C433DF for ; Thu, 16 Jul 2020 06:43:34 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 34F18206F5 for ; Thu, 16 Jul 2020 06:43:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LTaxAGIc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34F18206F5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C7F6E6B000E; Thu, 16 Jul 2020 02:43:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C30A58D0001; Thu, 16 Jul 2020 02:43:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B1F6A6B0022; Thu, 16 Jul 2020 02:43:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0240.hostedemail.com [216.40.44.240]) by kanga.kvack.org (Postfix) with ESMTP id 9B8A06B000E for ; Thu, 16 Jul 2020 02:43:33 -0400 (EDT) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 92502181AC9CB for ; Thu, 16 Jul 2020 06:43:32 +0000 (UTC) X-FDA: 77042997864.04.music55_260f8b526f00 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin04.hostedemail.com (Postfix) with ESMTP id 701728007DF6 for ; Thu, 16 Jul 2020 06:43:32 +0000 (UTC) X-HE-Tag: music55_260f8b526f00 X-Filterd-Recvd-Size: 4335 Received: from us-smtp-delivery-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Thu, 16 Jul 2020 06:43:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1594881811; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=92A49Ojmn2AU0Fmvk+D6Q53rRv9UoaDayPIPpa5wWcs=; b=LTaxAGIcCcttx+dwb0BbKsMU+i2uDjj6Vi4zWJYlQ2fvW1v7O6eTD/pclHVXFa2VOgxFbG CLzcMfGQlfgvPV0FBYLKPLGsCDF2krDyNOGiOoas4Z6UhXm3uLni4F8aFMluJ0r1b/GQUB Xq80Fluz7o/8A+gAOUn+B8HNyvgQfvs= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-287-AYVdNkegN2uzH4Tf7FHWUQ-1; Thu, 16 Jul 2020 02:43:30 -0400 X-MC-Unique: AYVdNkegN2uzH4Tf7FHWUQ-1 Received: by mail-wm1-f71.google.com with SMTP id c81so4240334wmd.2 for ; Wed, 15 Jul 2020 23:43:29 -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:in-reply-to; bh=92A49Ojmn2AU0Fmvk+D6Q53rRv9UoaDayPIPpa5wWcs=; b=kqZJT0yaTxkNoTlU3z4Vjx7vtUszrcbS78ZmH70Y8HJjugF2yNFu+DpV8HtlX3Mr4Q DMKTJO/P/cRrUMk9Rskbm3foOVwsik/sA4JWc32dIPz3nU3cTzlDKyCv3DKBhuCx2LIg WMyaluI4tdHyEP3KV1kOPpTBixeWk+SpLW9LQncbO3Vr0urY8JhztNDwLtX5Ph0HsIxp LuBOLCbwn1+F6wTIz7sOhhazsie3m8LkYw0qjcBWUaVkzNlxiI6Nc0r/Fdxoi9dblmFd ivRC8rzun3GWXmfdAxnis3mEITLBTiS7e/my8D79DkhCzvm7sT/uRDgIbtqRAuv43uAo XjMQ== X-Gm-Message-State: AOAM531XF818bojjsl1wZgLiVJ+JCOF6WiN+7/kYiWW0PcQpfXubt5eD tY2xMPlxxn7mmR3pvWTamEaPgbo9mY0FDDnDcabyPaM0+SqMrlpQrjEotClQuYUTrCW+CbYksfE 8j92PYy8PjtU= X-Received: by 2002:a1c:9a07:: with SMTP id c7mr2963446wme.147.1594881808574; Wed, 15 Jul 2020 23:43:28 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw6DpABEgJSEbkgqOOGpGbulniuOcb/AXbRsfBNAusCpgTzcOusCDH2paSBBwm1ZZJQp/CfjQ== X-Received: by 2002:a1c:9a07:: with SMTP id c7mr2963420wme.147.1594881808359; Wed, 15 Jul 2020 23:43:28 -0700 (PDT) Received: from redhat.com (bzq-79-182-31-92.red.bezeqint.net. [79.182.31.92]) by smtp.gmail.com with ESMTPSA id g3sm8085920wrb.59.2020.07.15.23.43.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jul 2020 23:43:27 -0700 (PDT) Date: Thu, 16 Jul 2020 02:43:25 -0400 From: "Michael S. Tsirkin" To: Hui Zhu Cc: david@redhat.com, jasowang@redhat.com, akpm@linux-foundation.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, virtio-dev@lists.oasis-open.org, Hui Zhu Subject: Re: [RFC for Linux v4 1/2] virtio_balloon: Add VIRTIO_BALLOON_F_CONT_PAGES and inflate_cont_vq Message-ID: <20200716024114-mutt-send-email-mst@kernel.org> References: <1594867315-8626-1-git-send-email-teawater@gmail.com> <1594867315-8626-2-git-send-email-teawater@gmail.com> MIME-Version: 1.0 In-Reply-To: <1594867315-8626-2-git-send-email-teawater@gmail.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Queue-Id: 701728007DF6 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Jul 16, 2020 at 10:41:51AM +0800, Hui Zhu wrote: > diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h > index dc3e656..4d0151a 100644 > --- a/include/uapi/linux/virtio_balloon.h > +++ b/include/uapi/linux/virtio_balloon.h > @@ -37,6 +37,7 @@ > #define VIRTIO_BALLOON_F_FREE_PAGE_HINT 3 /* VQ to report free pages */ > #define VIRTIO_BALLOON_F_PAGE_POISON 4 /* Guest is using page poisoning */ > #define VIRTIO_BALLOON_F_REPORTING 5 /* Page reporting virtqueue */ > +#define VIRTIO_BALLOON_F_CONT_PAGES 6 /* VQ to report continuous pages */ > > /* Size of a PFN in the balloon interface. */ > #define VIRTIO_BALLOON_PFN_SHIFT 12 So how does the guest/host interface look like? Could you write up something about it?