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[23.128.96.18]) by mx.google.com with ESMTP id a7si22839538pln.79.2021.10.19.02.43.59; Tue, 19 Oct 2021 02:44:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=gvXmPjPn; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234680AbhJSJoX (ORCPT + 99 others); Tue, 19 Oct 2021 05:44:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234887AbhJSJoS (ORCPT ); Tue, 19 Oct 2021 05:44:18 -0400 Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30731C061745 for ; Tue, 19 Oct 2021 02:42:06 -0700 (PDT) Received: by mail-pf1-x42b.google.com with SMTP id 187so17104672pfc.10 for ; Tue, 19 Oct 2021 02:42:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=ZObreM2oofTkM3qJIYvGBPc4dPhqrsVSh4sl9pXqX94=; b=gvXmPjPnRSNvISobWg1zZ6bO0AluECpeMJn/Wtis+JgxiwNWlke4JGvx/mqVLqczl8 4jegSqD2RFGK0e+025gFJmGB8Qvce8i7b/zZvQ5P1o4tLw1CzTJCwwCocqUq7fuHZO+p MysEs4HafXErdZiKjnpU0yu+cum9rB5wSlO9OOgu1EapetCEmzj0NnS7gBq21lAK4Hmb us2FlYi0wzPlsPFN+EMKrExs6+LEEyUnmsxebLREjpYBNZbdZXV2nC9luLFkNAXb785e VKs72+TSrOMuYyZ1MUsqyan//oK3gDLuHtSMWLNH5V4uXwMqvV5oIPkyMVN3VdplB57K d2Ig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=ZObreM2oofTkM3qJIYvGBPc4dPhqrsVSh4sl9pXqX94=; b=A7qKwqcnJtvyR31r9TJstFcbT9IJUSLOM6idxpMmxntB65JLWQTxYEXgxiNcmilkRt /hQQUw5edjb5/sq24ncr2d8CZCXjgWPtErLK5KFINOzKfXwIAATmF0DIpvZFVi7hSler 0EL7YEJ0MY25vEzzi/WIv67tPWBPnx1yshDUnc3ayzy867aG2CpuNlUbcThzZ7hQDILg rEH3+m7dXG3gCCQ+TU+Xf7P+CUmnMMUDmnUIrAlFf7Ow+2GKmFHh4exBS8lddWWGxUlV EiqFPhAjN5gLjTuCbBzh2LWNT28yUab0kv0FUeblCXlW3wpB1wWwUikaAADJ6kqvbcrH cOtw== X-Gm-Message-State: AOAM531xIPN20TlLastRkc8aT4h94lMQeTapf97uJGnNCvTbQtWFZbaE 5Hzj6x1hsvOgNcXFQAP/wVBcbw== X-Received: by 2002:a63:154:: with SMTP id 81mr27360406pgb.38.1634636525679; Tue, 19 Oct 2021 02:42:05 -0700 (PDT) Received: from localhost ([106.201.113.61]) by smtp.gmail.com with ESMTPSA id u4sm2037379pjg.54.2021.10.19.02.42.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Oct 2021 02:42:05 -0700 (PDT) Date: Tue, 19 Oct 2021 15:12:03 +0530 From: Viresh Kumar To: Greg KH Cc: Vincent Whitchurch , wsa@kernel.org, jie.deng@intel.com, virtualization@lists.linux-foundation.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@axis.com Subject: Re: [PATCH 1/2] i2c: virtio: disable timeout handling Message-ID: <20211019094203.3kjzch7ipbdv7peg@vireshk-i7> References: <20211019074647.19061-1-vincent.whitchurch@axis.com> <20211019074647.19061-2-vincent.whitchurch@axis.com> <20211019080913.oajrvr2msz5enzvz@vireshk-i7> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716-391-311a52 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 19-10-21, 11:36, Greg KH wrote: > What is the "other side" here? Is it something that you trust or not? Other side can be a remote processor (for remoteproc over virtio or something similar), or traditionally it can be host OS or host firmware providing virtualisation to a Guest running Linux (this driver). Or something else.. I would incline towards "we trust the other side" here. > Usually we trust the hardware, but if you do not trust the hardware, > then yes, you need to have a timeout here. The other side is the software that has access to the _Real_ hardware, and so we should trust it. So we can have a actually have a completion without timeout here, interesting. -- viresh