From nobody Fri Dec 19 19:15:45 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 EA9A717967E; Sun, 24 Mar 2024 23:40:41 +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=1711323643; cv=none; b=U6GMe6cybsX/7+7QmMTJiYU1l0MZccVCwLVT3QD4Mlt5//hGvFmoYuj7Nk5jvxlUbiw0Ko94+6HotfPREhs/eGiIoEKmCDJvd3EEU+omsChYFflv2QkGmyd+AQgERuaK3J4o6pV6JZbPcRyOyu3P1E4d5jLwisXOw5zdfULKnjY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711323643; c=relaxed/simple; bh=9eC06TIqVP4YEX5xtazcIFSDbMDbYTC3Hpi0cb+4aWg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mZxZTs9WIKrKhn5wU9RG8G/dl4JZsrepzUThsgWKVdwCPAlD0VUFOSHqUGBkWxaJ1n6xfGHjERrv+aLo3u56j4D7AomhBaVJSxW89A292tmO+6qODhY2I7d3GatRmT3R0xcPnDNIvYdJvYuvSfK+eoKl/IeETA0PD/+1Vas7V8A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KsRyly+b; 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="KsRyly+b" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00B6FC433F1; Sun, 24 Mar 2024 23:40:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711323641; bh=9eC06TIqVP4YEX5xtazcIFSDbMDbYTC3Hpi0cb+4aWg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KsRyly+bdyJVs10sCVleve2HoaYGh0ojO6Yj5PsnwfnJb0sxkunMSCvhPx9Law1kf q/POwOHKe9O3zcGxX/WeegwL8ja+aRGuEgzzYf2VeaNYXlZRHBDd4Bw8TWg21zCQIr dD+6i8YEMDqpzL86o/p+WokHk8x6XEKmXft13rPE0oov3ktG+2fB/cr/NwFaSkz5jz Nq/XcNfDCeV6eRV9apH5rtWeOzDlLQqFsPGOZr7jed4Eg4Z/Q1jI2ozQG3cPgmxzFv ikFdq2ezSXpYDuBE8g9be9Y2aGq/DG2cEe9muCtuBJJrMwGucO0mQJi/X5hILjWoGm Fke+6U+9esM9g== 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 5.10 013/238] RDMA/mlx5: Relax DEVX access upon modify commands Date: Sun, 24 Mar 2024 19:36:41 -0400 Message-ID: <20240324234027.1354210-14-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324234027.1354210-1-sashal@kernel.org> References: <20240324234027.1354210-1-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 a56ebdc15723c..f67ebd9f3cdd1 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -2780,7 +2780,7 @@ 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