From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1EBCD38DED for ; Wed, 29 Nov 2023 15:44:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XbgKAV2h" Received: by smtp.kernel.org (Postfix) with ESMTPS id 8C567C433CC for ; Wed, 29 Nov 2023 15:44:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701272692; bh=OBJqfwLphCLQFu0q/bTbaSS+TOP+Xi9G1wSEMxPjxCA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=XbgKAV2himLVJwzOOjc/K9P2PWr9o3BFVwAX32zoIWhC2kGCDrbfQd0vHIacv240U vMuinoE9vZKOJIXzeUaCrku8YPX3D0maNL4//mNNV7Tzwye7Q4n5+1J3OxDufReE8X tExdkDlwlFQT3EtHhFaC3CSHg+3FAKq+LcoZhITWnm6KxBl6SuvKNxO2POvDGc5+nc WWyyDZQKFaXvTOtJYOnt5mv/KP3vyCeJDhVL0xP7vW5CUv1ho+JF8RUd8Zr2jbp0rB uRxibTVBrgI7FUbZmRpGQC9DMz6v8TBPxP2MncILAnTg2cVplkVAwLoAeBkk3PH+17 gH4uS/DMTgdfg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 78390C53BCD; Wed, 29 Nov 2023 15:44:52 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 215740] kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported Date: Wed, 29 Nov 2023 15:44:52 +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: stern@rowland.harvard.edu 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: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D215740 --- Comment #37 from Alan Stern (stern@rowland.harvard.edu) --- Okay. On an Intel Edison-Arduino the slowdown won't be as dramatic as on a large system doing high-bandwidth I/O. But you'll still want to avoid it if you can. Have you tried testing the patch posted in the email thread? --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=