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[99.254.144.39]) by smtp.gmail.com with ESMTPSA id g1-20020a37e201000000b007681fc2999bsm737311qki.54.2023.07.18.10.36.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jul 2023 10:36:18 -0700 (PDT) Date: Tue, 18 Jul 2023 13:36:17 -0400 From: Peter Xu To: Jason Gunthorpe Message-ID: References: <20230621091112.44945-11-lingyu.liu@intel.com> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline X-Mailman-Approved-At: Tue, 18 Jul 2023 17:42:18 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689701780; 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=mvPVjjNECoRFNO48oXbxAOJbDMaOxAF6tNeJiwWQlBM=; b=iKzE9vXrDxZzdXMOvBVBXV/tZhROewwIcwyN81L2hxacN6yzsstt0MPQtJGdbCAjApkJRh Yb58PDm2HysNpDXNhspSUrIRGFmqI3mI2uxo/dROZWBoBesZ7sZlViXBkgbVWtmwQE2h8L Z889h5jkYko69R6a1c6Ug2R2T3Qg/Es= X-Mailman-Original-Authentication-Results: smtp3.osuosl.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=iKzE9vXr Subject: Re: [Intel-wired-lan] [PATCH iwl-next V2 10/15] ice: save and restore TX queue head X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Tian, Kevin" , "Liu, Yi L" , "intel-wired-lan@lists.osuosl.org" , "Burra, Phani R" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On Tue, Jul 18, 2023 at 12:38:58PM -0300, Jason Gunthorpe wrote: > On Mon, Jul 17, 2023 at 05:43:34PM -0400, Peter Xu wrote: > > > It may boil down to why we need to avoid migrating vIOMMU before other > > devices (which I am still unsure about..), and which way is easier. > > The statement is just that the kernel cannot assume anything about > vIOMMU ordering and people can't make VFIO migration drivers that > assume the vIOMMU is setup before the entry to running. > > That qemu enforces this ordering today for pointless reasons is > interesting, but it should not leak into becoming the ABI contract of > the kernel. I wouldn't say it's pointless because we did that obviously with a reason. But I agree it should be qemu internal and shouldn't even be exposed unless extremely necessary. -- Peter Xu _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan