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 5F4172FD1B0 for ; Fri, 28 Nov 2025 08:48:43 +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=1764319724; cv=none; b=akbAKZcLc25HCi5WMc9ZZgMZe4eObqZIBa1GZNZ0gn+0Z9nfWcXB3akNJyYNaNOgQ2LyC/Q3qKh+It1vdcQcOBl2KVzLqcdztWRq99J0C61EN2y1/qBAgOI5xlB9oed7QZUI+MLMHOuH/8yfSnoTRyb4Rh4OPPMPYQV/wYV4WCE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764319724; c=relaxed/simple; bh=GYmEiCXQ0KjvFCswGHmwcRAxseICvS5Q2mRZzp7Ipxo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JY8+eUbTdRrcq5rbKb+Ugbeyfe9gQD4ph8f579nWLob4BYx4n24D7ZlOte031wkB0rzjqt4prYgQlnptfoBASA7b+/nIJd0lvW1p9tYTZC//uYpHp+V/dP82PJCCTQo71sQ72UxQB31T6LEM9PiuX2GTQkLCSeKZPbAEMDI+0kk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mXAyeEDa; 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="mXAyeEDa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D624BC2BCB1; Fri, 28 Nov 2025 08:48:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764319723; bh=GYmEiCXQ0KjvFCswGHmwcRAxseICvS5Q2mRZzp7Ipxo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mXAyeEDa3gLg+PT5HlFQs5jwQH9LY/qdFi/OOVJjhEzrOGnHDKWFMRz8IX9oDjy1/ 1Ab4zZdiKNMmnfRu+t5XY2GlFLGeeBCj86jEDZEAlwsRtpcoyKRGRRICYVzi+VKg0a MsiQTMPVn8BRU6pkncUM9xMz07+qna63X/nf51kvcKSYbY7rWTBc9IRafoPwkvTDzn NGn/CBsEnyhYzKam5Nu2+lfs7aqe6jYZJQxaCz9roo6V+jJkmrsSFTT0c7dD3shLiv oOMZ+mpTDDAs5rh5Eu7VVw3yR/RFldcllmLe/jSyZ3Of9PP/Bf88CVZBVk7CeHLGSh 2cimmnB86mHZQ== From: Niklas Cassel To: Damien Le Moal Cc: linux-ide@vger.kernel.org, xxjack12xx@gmail.com, Niklas Cassel Subject: [PATCH v2 7/8] ata: libata: Add libata.force parameter max_sec Date: Fri, 28 Nov 2025 09:48:22 +0100 Message-ID: <20251128084814.3798425-17-cassel@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251128084814.3798425-10-cassel@kernel.org> References: <20251128084814.3798425-10-cassel@kernel.org> Precedence: bulk X-Mailing-List: linux-ide@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1882; i=cassel@kernel.org; h=from:subject; bh=GYmEiCXQ0KjvFCswGHmwcRAxseICvS5Q2mRZzp7Ipxo=; b=owGbwMvMwCV2MsVw8cxjvkWMp9WSGDI1Ey8nXXj7i0nsknj9PW8bq5jItddjW+pb3WZaXNv8e Mflit8RHaUsDGJcDLJiiiy+P1z2F3e7TzmueMcGZg4rE8gQBi5OAZjI5x2MDDsuHfq5NvJA4M0K /qXf55qmcyv/v9vXkB3amd0a4/Wq+wfD/5THF9IYf2RwpaRdO6Whqix5rCuUe/LX/PstCpPUXP4 l8wAA X-Developer-Key: i=cassel@kernel.org; a=openpgp; fpr=5ADE635C0E631CBBD5BE065A352FE6582ED9B5DA Content-Transfer-Encoding: 8bit Add a new libata.force parameter called max_sec. The parameter can take an arbitrary value using the format: libata.force=max_sec= e.g. libata.force=max_sec=8191 or libata.force=max_sec=2048 This will allow the user to set an arbitrary max_sectors value using libata.force. We cannot remove the existing libata.force parameters "max_sec_128" and "max_sec_1024", as these are a part of the exising user facing API. Signed-off-by: Niklas Cassel --- Documentation/admin-guide/kernel-parameters.txt | 4 ++++ drivers/ata/libata-core.c | 1 + 2 files changed, 5 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6c42061ca20e5..c5464b11a2ad5 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3294,6 +3294,10 @@ * [no]logdir: Enable or disable access to the general purpose log directory. + * max_sec=: Set the transfer size limit, in + sectors, to the value specified in . The + value specified in has to be an integer. + * max_sec_128: Set transfer size limit to 128 sectors. * max_sec_1024: Set or clear transfer size limit to diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 7f59eca2a65be..c122a8aa27688 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6540,6 +6540,7 @@ static const struct ata_force_param force_tbl[] __initconst = { force_quirk_val(max_sec_128, ATA_QUIRK_MAX_SEC, 128), force_quirk_val(max_sec_1024, ATA_QUIRK_MAX_SEC, 1024), + force_quirk_on(max_sec=, ATA_QUIRK_MAX_SEC), force_quirk_on(max_sec_lba48, ATA_QUIRK_MAX_SEC_LBA48), force_quirk_onoff(lpm, ATA_QUIRK_NOLPM), -- 2.52.0