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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FC46C433F5 for ; Wed, 5 Oct 2022 17:10:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229774AbiJERKH (ORCPT ); Wed, 5 Oct 2022 13:10:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230042AbiJERKG (ORCPT ); Wed, 5 Oct 2022 13:10:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3AE1B17E03 for ; Wed, 5 Oct 2022 10:09:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4408E6157B for ; Wed, 5 Oct 2022 17:09:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61F1EC433C1; Wed, 5 Oct 2022 17:09:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664989797; bh=7Al7p0e/Q/CYLSbHwqp4FxI9dzTo05HhqENFiFyAqCU=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=nmfz7mChzVjUzFqQoBSN2be04TElAXdvi/AM9x4mRNKPt5IGKidpcmb2/O8bHCB2d frV5AUzb5WIUGFDsPMqHoDuoYCJOPj1OGQgt218CCOMSfm7xNLnMDzH8HCfwm1FV5g 3cnC4A33NQON8GghVxJcix2nZoEIYIDvn00Rw3g8naUCU8mghAkohgZCxGKb7inyL2 hQvWl3bCLPWEd6bV6pr/0DmSA7UDnaoC44T0fwFns5E9VQDuussIvWRyHkZihYuIsc pCkcWJZ3/OFqJWP3Fhmuc4ue95tkgATgYrxm3I5JuZj7DON+TzlfwQhab5WYiFtVmh 2Z4im25G7zBoQ== Date: Wed, 5 Oct 2022 12:09:55 -0500 From: Bjorn Helgaas To: Logan Gunthorpe Cc: Ramesh Errabolu , linux-pci@vger.kernel.org Subject: Re: Understanding P2P DMA related errors Message-ID: <20221005170955.GA2300238@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <5d3b257a-c125-fdd6-e29f-229e54679f45@deltatee.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Wed, Oct 05, 2022 at 09:54:50AM -0600, Logan Gunthorpe wrote: > On 2022-10-04 22:42, Ramesh Errabolu wrote: > > Hi, > > > > Thanks for taking a look at this. I will see if I can add 0x09A2 to the > > whitelist and see what happens. But could you clarify my reading of the > > device tree. In the tree I don't see an AMD device attached to the > > 0x09A2 device. Is that a misread on my part? Would appreciate it if you > > could shed light on this aspect. Ramesh, just FIYI, your emails aren't making it to the mailing list, probably because they're "too fancy," e.g., they are multi-part or contain HTML. See http://vger.kernel.org/majordomo-info.html You can see the effect at https://lore.kernel.org/all/5d3b257a-c125-fdd6-e29f-229e54679f45@deltatee.com/ The archive contains Logan's responses, but not the emails from you that Logan is responding to. Bjorn