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Mon, 07 Dec 2020 12:08:56 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 08B8FAC90; Mon, 7 Dec 2020 12:08:56 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 201cab70-792c-467e-9b72-72c3ea713b65 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1607342936; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UcVSi8g+hIX+IG4KRIj73MOY57kQKL0iEo/GaRZ/zTA=; b=TNWoIFNQU84nu5DmU18lWgfFdDf1okVXZHxTO37AOzq9ccRHm5NNpcKccMduankqYOQyxz XspcaCx/PC8z58759MoGziCu8Ee71Mgt3Mj3z+J/pLL1+JXZWs5hl6lLkgZGoh7QppF/ae QAwAq+aOZ5TliPn3ktQUlfRIlAP7S2I= Subject: Re: [PATCH V3 09/23] xen/dm: Make x86's DM feature common To: Oleksandr Tyshchenko Cc: Julien Grall , Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Wei Liu , George Dunlap , Ian Jackson , Julien Grall , Stefano Stabellini , Daniel De Graaf , Oleksandr Tyshchenko , xen-devel@lists.xenproject.org References: <1606732298-22107-1-git-send-email-olekstysh@gmail.com> <1606732298-22107-10-git-send-email-olekstysh@gmail.com> From: Jan Beulich Message-ID: <00c3df9f-760d-bb3d-d1d6-7c7df7f0c17c@suse.com> Date: Mon, 7 Dec 2020 13:08:58 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 MIME-Version: 1.0 In-Reply-To: <1606732298-22107-10-git-send-email-olekstysh@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit On 30.11.2020 11:31, Oleksandr Tyshchenko wrote: > From: Julien Grall > > As a lot of x86 code can be re-used on Arm later on, this patch > splits devicemodel support into common and arch specific parts. > > The common DM feature is supposed to be built with IOREQ_SERVER > option enabled (as well as the IOREQ feature), which is selected > for x86's config HVM for now. > > Also update XSM code a bit to let DM op be used on Arm. > > This support is going to be used on Arm to be able run device > emulator outside of Xen hypervisor. > > Signed-off-by: Julien Grall > Signed-off-by: Oleksandr Tyshchenko > > --- > Please note, this is a split/cleanup/hardening of Julien's PoC: > "Add support for Guest IO forwarding to a device emulator" > > Changes RFC -> V1: > - update XSM, related changes were pulled from: > [RFC PATCH V1 04/12] xen/arm: Introduce arch specific bits for IOREQ/DM features > > Changes V1 -> V2: > - update the author of a patch > - update patch description > - introduce xen/dm.h and move definitions here > > Changes V2 -> V3: > - no changes And my concern regarding the common vs arch nesting also hasn't changed. Jan