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 917EC3537EE; Fri, 1 May 2026 06:35:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777617326; cv=none; b=DgbFkKagfklmSCREUf3uRwGWi5zIdziKChKUsLwCZHKtwRE2vvD00oMk3ZXCKY3Iz088qBNy5DwOkw0KxRyeEtmCqVxWFjO517ypeSavo6aYFXp5d+uR7bviP1Zh6yEgW4hWDk3TdDNY0ALzlCzBw6GAGwhzKseciBMJbv+vEo4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777617326; c=relaxed/simple; bh=pqUK270oHvN5x8gQnXfciH4CZm1kMpsnusKgtjCk3TM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=NAs7KUEXb734dbWL/bHiHkQMoXTItXoZrQB0WJpcqHJI9b2ptsX8kkMA8rQxL6j7KEEWYsEl0fFjddaCdHSgUUrL+bdmBZ9Ljf7ta/Z6vljc5TyTbZ6D+t4uKw3HQ08T5+R2Srk89D9lujyJKkEFwba9UWd6AP0O0f7rC2NyOw0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kCYSVLOS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kCYSVLOS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2234C2BCB7; Fri, 1 May 2026 06:35:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777617326; bh=pqUK270oHvN5x8gQnXfciH4CZm1kMpsnusKgtjCk3TM=; h=From:To:Cc:Subject:Date:From; b=kCYSVLOS/2wkQWv+pDn7uvBiBBHQmDSjUg13dErPMqv+lSlSV0DasqMgb1MEAPjP8 pTVz67HRNxeaZ2Loq69GSQgZj2Erof327T+xscFmePyhFGhwSq3mXo0QPhxb6/Z4a7 u2rExa+rdm8tJfo9ENr2s0HZOpNxE8jBMPigU6KLA8xqM5Zn3l+e3BHP0H/jTg1Tur bd8IrlrMsHoO60I4/fhNdlYhS9rIQozI3BHsatFXZ9dDonFXsc/98IqUyp2WgOSTze XQ2B3zqlgg4wCayvU4qGqfBTV0fIaKmWzGhVPKd6iI9hKeoixuhWj+xiISTL4eAEv4 p8v5550PGG+wQ== From: Leon Romanovsky To: Marek Szyprowski , Robin Murphy , Jon Mason , Dave Jiang , Allen Hubbe Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, ntb@lists.linux.dev Subject: [PATCH v2 0/6] Add DMA attributes tracking Date: Fri, 1 May 2026 09:35:04 +0300 Message-ID: <20260501-dma-attrs-debug-v2-0-8dbac75cd501@nvidia.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Change-ID: 20260323-dma-attrs-debug-85e282d6f3bb X-Mailer: b4 0.15-dev-18f8f Content-Transfer-Encoding: 8bit The DMA API expects that callers use the same attributes when mapping and unmapping. Add tracking to verify this and catch mismatches. Thanks --- Changes in v2: - Split original patch to be a series - Added all unmap flows - Skipped DMA attributes which exist only in map path - Added ntb patch - Link to v1: https://patch.msgid.link/20260323-dma-attrs-debug-v1-1-6275228ca300@nvidia.com --- Leon Romanovsky (6): ntb: Store original DMA address for future release ntb: Use consistent DMA attributes when freeing DMA mappings dma-debug: Remove unused DMA attribute parameter dma-debug: Record DMA attributes in debug entry dma-debug: Feed DMA attribute for unmapping flows too dma-debug: Ensure mappings are created and released with matching attributes drivers/ntb/ntb_transport.c | 10 +++--- kernel/dma/debug.c | 87 +++++++++++++++++++++++++++++++-------------- kernel/dma/debug.h | 25 ++++++------- kernel/dma/mapping.c | 10 +++--- 4 files changed, 85 insertions(+), 47 deletions(-) --- base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731 change-id: 20260323-dma-attrs-debug-85e282d6f3bb Best regards, -- Leon Romanovsky