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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,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 9F2DBC2D0E5 for ; Fri, 27 Mar 2020 14:38:09 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 02067206F2 for ; Fri, 27 Mar 2020 14:38:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=aepfle.de header.i=@aepfle.de header.b="EH54Apmn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 02067206F2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aepfle.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1jHq7E-0002Mx-1D; Fri, 27 Mar 2020 14:37:44 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1jHq7C-0002Ms-B2 for xen-devel@lists.xenproject.org; Fri, 27 Mar 2020 14:37:43 +0000 X-Inumbo-ID: 82659ca0-7038-11ea-bec1-bc764e2007e4 Received: from mo6-p01-ob.smtp.rzone.de (unknown [2a01:238:20a:202:5301::12]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 82659ca0-7038-11ea-bec1-bc764e2007e4; Fri, 27 Mar 2020 14:37:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1585319859; s=strato-dkim-0002; d=aepfle.de; h=In-Reply-To:References:Message-ID:Subject:Cc:To:From:Date: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=BWEe5yZwvv6uKqihOppNLDoGpcN02Idsi9DZIr2WNuM=; b=EH54ApmnzvLoVeIqGzCxCrEnavfV2VjAq/eLBL5W9TvEuHRiMymi5Z1V+Z5gJP9560 z5Zy/rLiDIcE9gSv3vcQ/Jj07CgKopUSRTrbCSN+2uEFHcTBqqi5HxrRBj5OwIaXPsLu QV802o61Ecj6NY9uMJxaAcpOtXov+ugElr7oCmekA/zgig4fyNWWlmEH68dKhJZcWsjB AYCFtipjytf9byq4ikpaJ1R0S4+gZT6O8xFk0+ALx29nyGdHiYAK5YdwBzYHKUvp4vPa 4jz2569kyoCcQHdcbALfa9f+1K2aJ5qyFYRQm9/sBWufAnz5roYgdMQjgYtl2PmugBsx uOgg== X-RZG-AUTH: ":P2EQZWCpfu+qG7CngxMFH1J+3q8wa/QXkBR9MXjAuzBW/OdlBZQ4AHSS1Wwg" X-RZG-CLASS-ID: mo00 Received: from aepfle.de by smtp.strato.de (RZmta 46.2.1 DYNA|AUTH) with ESMTPSA id 204e5fw2REbc4MM (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 27 Mar 2020 15:37:38 +0100 (CET) Date: Fri, 27 Mar 2020 15:37:35 +0100 From: Olaf Hering To: Ian Jackson Message-ID: <20200327143735.GA4443@aepfle.de> References: <20200327142256.3256-1-olaf@aepfle.de> <24190.3426.470473.335250@mariner.uk.xensource.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="M9NhX3UHpAaciwkO" Content-Disposition: inline In-Reply-To: <24190.3426.470473.335250@mariner.uk.xensource.com> Subject: Re: [Xen-devel] [PATCH v1] libxl: remove limit for default number of event channels X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Anthony Perard , "xen-devel@lists.xenproject.org" , Wei Liu Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" --M9NhX3UHpAaciwkO Content-Type: text/plain; charset=utf-8 Content-Disposition: inline On Fri, Mar 27, Ian Jackson wrote: > This seems likely to be right, but: what is the default in Xen ? Is > it sufficiently tight to stop a guest using too many resources ? The value of d->max_evtchns will be either 4k or 128k. AFAICS no extra resources are allocated with the changed value. 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