From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56212) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YLMGX-0006Km-Od for qemu-devel@nongnu.org; Tue, 10 Feb 2015 20:38:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YLMGS-0007nm-Pw for qemu-devel@nongnu.org; Tue, 10 Feb 2015 20:38:57 -0500 Received: from szxga01-in.huawei.com ([119.145.14.64]:25385) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YLMGS-0007nZ-5o for qemu-devel@nongnu.org; Tue, 10 Feb 2015 20:38:52 -0500 Message-ID: <54DAB29A.8010202@huawei.com> Date: Wed, 11 Feb 2015 09:38:34 +0800 From: Linhaifeng MIME-Version: 1.0 References: <1423547293-8448-1-git-send-email-haifeng.lin@huawei.com> <20150210084632.GA8397@redhat.com> <54D9DCF8.2000106@huawei.com> <20150210104126.GE9505@redhat.com> <54D9F294.2090000@huawei.com> <20150210120422.GA5339@redhat.com> In-Reply-To: <20150210120422.GA5339@redhat.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v1 1/2] vhost-user: support SET_MEM_TABLE waite the result of mmap List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: arei.gonglei@huawei.com, qemu-devel@nongnu.org On 2015/2/10 20:04, Michael S. Tsirkin wrote: > So that's not good. We need a way to negotiate the capability, > we can't just deadlock with legacy slaves. Should we wait many seconds if slave not reply we just return error? -- Regards, Haifeng