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=-1.0 required=3.0 tests=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 B8E16C2BA80 for ; Tue, 7 Apr 2020 14:01:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8957220719 for ; Tue, 7 Apr 2020 14:01:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728943AbgDGOBR convert rfc822-to-8bit (ORCPT ); Tue, 7 Apr 2020 10:01:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:37510 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728739AbgDGOBR (ORCPT ); Tue, 7 Apr 2020 10:01:17 -0400 From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 207147] USB errors: uhci_hcd 0000:01:00.4: swiotlb buffer is full (sz: 8 bytes) ; iommu=off Date: Tue, 07 Apr 2020 14:01:16 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: John.p.donnelly@oracle.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=207147 --- Comment #3 from John.p.donnelly@oracle.com --- Hi Alan, wrt to comment 2. If that is the case that iommu=on is needed on that is fine. I just wanted to report my observation. FWIIW - 4.14 Oracle UEK5 kernels and 4.18 Redhat kernels do not require iommu=on to have the HP iLo devices operate. This is an operational difference between the 4.x and 5.x kernels. Our own Oracle servers do not exhibit the same failures as HP Gen9 and Gen10 do. They operation fine regardless of the iommu setting(s). -- You are receiving this mail because: You are watching the assignee of the bug.