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 582C430673 for ; Sat, 25 Nov 2023 21:17:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lGvKkYg8" Received: by smtp.kernel.org (Postfix) with ESMTPS id D2A4CC433CC for ; Sat, 25 Nov 2023 21:17:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700947027; bh=d0IsOKjDEmf5bJ7kK13n3PhuMibNfdoev3hk2jZveug=; h=From:To:Subject:Date:In-Reply-To:References:From; b=lGvKkYg8N0m2hG/mnEZCoGZmo42QR0/odmpjjgxZG6ejMIzZglP+IYWENdpQhkXei k8Lo4z06FnSsNjhBnwjYUnuRmguFrwKpK1fEpDfydOH+4BVJhCYBfPkTodkVtS72Rl Od5s8jSpuqF+XrAMDqKncmRBKR5eMrIcpoq1b5Q2LqSRVgfkSSEBC530lYH3AtGCg/ eAVUX7M71/pE7feYmHahUFbADtTbso6HJIXlTiSNO91ZmuFEXeAHtCcu51k0rzJrUw 5wC1KxL6enF4bkbRkNRbi2naWF+SZQhushUrvJpCnQvr6DDiTeAv2cBfRha/RuP+S6 RV+tQC9mZD7nw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id BE1DDC53BD3; Sat, 25 Nov 2023 21:17:07 +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: Sat, 25 Nov 2023 21:17:07 +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 #33 from Alan Stern (stern@rowland.harvard.edu) --- It should not be necessary to use dma_kmalloc_size_aligned(). These allocations don't need any special alignment; they just need to be in diffe= rent cache lines on some architectures. Isn't this what ARCH_DMA_MINALIGN and ARCH_KMALLOC_MINALIGN are supposed to take care of (see include/linux/slab.= h)? I'll try doing a little more testing to find out why the issue does not sho= w up on my computer. --=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.=