From nobody Wed Oct 15 22:47:23 2025 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 7F2BC272994; Sun, 24 Mar 2024 23:35:13 +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=1711323314; cv=none; b=kd051evwCdk06wqA3LS7jQuCJiLRH19n+j2cvpa9J6H7pPZC+q1fjsUC8I4TEG/U3yUHSrTaonJihIHkuJ+UoQ24SlG0ciISehl4IrM9X5puHQwTX4DNCcwUVCYd1lXmFWWQqN6cRFHzfqYQDboUDWNh03YWZPQyZkBLXp90kXI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711323314; c=relaxed/simple; bh=8VVwG/bIdg9aEww7zqF3oialBxlZZB4yvhDB3Q+do1g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mvEJYOmDVVewD0z5/4sxjO7+azIdGOduFjXn31BUfLFA+AnaxX5dC9E75jV7Ds5FIuVjtXRjR/5G6/9cJT2fIWzMylL7pjt7Uo7yyD0TGW+gpKwERJcG0DT+CFOAI2zJRbPWQADKl6aG7QC68QOXnhrOiRayFpMIiK360BC1Qu8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=i8EGJGmJ; 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="i8EGJGmJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 52AC8C43390; Sun, 24 Mar 2024 23:35:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711323313; bh=8VVwG/bIdg9aEww7zqF3oialBxlZZB4yvhDB3Q+do1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i8EGJGmJSNB3kznwOlcUS5hu+PW1u4J8TxlreTJlc+P2gGMT6ce98CClRumyVfwQM GSlKL0jhF2b9JIj/bixd5Dr+xPlxR0QBdN1K6hFK8NzloqvgKS4ZQneR0fitI9s/VK 9Z8MthU2EfstMRgiZ0qVf6Q+ta+tjbqo9QfZp2N3WqruTTckeOtBTGodqDk5hvfpOe OeVAJKMJvQsmqFA9njkvg8UTbqQfRZMvVM7aftTKkLAn/DjdzG/3NfVn4tPdAXgK8d 6LV59MWx9tLw8TcC4zZ4knEfwrs3w6v3/n9j4fTnajRvpDBTlttd5DkB3mDTwZQi3Y S9izYY0l7f1UQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yishai Hadas , Tamar Mashiah , Michael Guralnik , Leon Romanovsky , Sasha Levin Subject: [PATCH 5.15 013/317] RDMA/mlx5: Relax DEVX access upon modify commands Date: Sun, 24 Mar 2024 19:29:53 -0400 Message-ID: <20240324233458.1352854-14-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324233458.1352854-1-sashal@kernel.org> References: <20240324233458.1352854-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Yishai Hadas [ Upstream commit be551ee1574280ef8afbf7c271212ac3e38933ef ] Relax DEVX access upon modify commands to be UVERBS_ACCESS_READ. The kernel doesn't need to protect what firmware protects, or what causes no damage to anyone but the user. As firmware needs to protect itself from parallel access to the same object, don't block parallel modify/query commands on the same object in the kernel side. This change will allow user space application to run parallel updates to different entries in the same bulk object. Tested-by: Tamar Mashiah Signed-off-by: Yishai Hadas Reviewed-by: Michael Guralnik Link: https://lore.kernel.org/r/7407d5ed35dc427c1097699e12b49c01e1073406.17= 06433934.git.leon@kernel.org Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/mlx5/devx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5= /devx.c index 104e5cbba066b..ef3585af40263 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -2922,7 +2922,7 @@ DECLARE_UVERBS_NAMED_METHOD( MLX5_IB_METHOD_DEVX_OBJ_MODIFY, UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE, UVERBS_IDR_ANY_OBJECT, - UVERBS_ACCESS_WRITE, + UVERBS_ACCESS_READ, UA_MANDATORY), UVERBS_ATTR_PTR_IN( MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN, --=20 2.43.0