From nobody Fri Dec 19 21:47:33 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 E71B713C83C; Sun, 24 Mar 2024 23:46:47 +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=1711324008; cv=none; b=nI2c5FXdZnHn3Xp7cuB70aHkx0KjhJDnZHcbrwj31+Z/4P1EucYja3VsyC6v9VLy4rp5iaU+I84fZItZkZqpi4TlwJnSlxLXwLF8ZqdynPTclAHKETsJmPQzubjjoTpk5tXX2AsmKnF6/OLRJIz6q7ZbRSW6ZTdPaALRfWds+lg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711324008; c=relaxed/simple; bh=q/zQI/aVAcj6DReUdBtfbzpmGks9RLFWREZi7JOicZU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bzbVCKHrK9medmdto64GbR8aREfh6pFm82pNNTGonGw/1mt/mHBqYW0kU1KtQvZh/JSyWskhuuUfUDfLhiM4hgaDqyEUI8OWk2j1sXukjA2muLkck7qMIIxhPkM9f6clwv5XLgJSqLCMnqpuRNFOJgqE264qnTpIqrNlVpSiIv4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BTtSQJ5t; 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="BTtSQJ5t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 024BAC43390; Sun, 24 Mar 2024 23:46:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711324007; bh=q/zQI/aVAcj6DReUdBtfbzpmGks9RLFWREZi7JOicZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BTtSQJ5tHjGaIJaD5DM+uU+jbDlkdJbzsa4YqiTKRQr8USy9ifwrOB7RwOWi1S5aG YG6gPpkUFPFDbd12l3Uz1vGWFpdiRbWWy4FVIbWoleGzCCn4PMdgVEWEJcMswWAOlS 2va2KIA0GTA/q6MnL593fXvnb/VVpA0t49ZO7uliZupQO95ldL5wKrRGqIWgTMdoEL 1KK8uu3eqa/oZeAg1AQe3Vor0QxFnclOH+eu9ulCvjqCF3SZbbwdhz5POg0UxMeaMU MnQDYd/BOR5tg2VP+KuXo0hZrCVItK0gNJqISRBaaKteSy0LsUv0uCwSZNEC1kUNPG tRhXS17E+Qqsw== 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 5.4 008/183] RDMA/mlx5: Relax DEVX access upon modify commands Date: Sun, 24 Mar 2024 19:43:41 -0400 Message-ID: <20240324234638.1355609-9-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324234638.1355609-1-sashal@kernel.org> References: <20240324234638.1355609-1-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 26cc7bbcdfe6a..7a3b56c150799 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -2811,7 +2811,7 @@ 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