From: John Garry <john.g.garry@oracle.com>
To: Guenter Roeck <linux@roeck-us.net>, Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Damien Le Moal <dlemoal@kernel.org>,
Niklas Cassel <cassel@kernel.org>,
Takashi Sakamoto <o-takashi@sakamocchi.jp>,
Sathya Prakash <sathya.prakash@broadcom.com>,
Sreekanth Reddy <sreekanth.reddy@broadcom.com>,
Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>,
"Juergen E. Fischer" <fischer@norbit.de>,
Xiang Chen <chenxiang66@hisilicon.com>,
HighPoint Linux Team <linux@highpoint-tech.com>,
Tyrel Datwyler <tyreld@linux.ibm.com>,
Brian King <brking@us.ibm.com>, Lee Duncan <lduncan@suse.com>,
Chris Leech <cleech@redhat.com>,
Mike Christie <michael.christie@oracle.com>,
Jason Yan <yanaijie@huawei.com>,
Kashyap Desai <kashyap.desai@broadcom.com>,
Sumit Saxena <sumit.saxena@broadcom.com>,
Shivasharan S <shivasharan.srikanteshwara@broadcom.com>,
Chandrakanth patil <chandrakanth.patil@broadcom.com>,
Jack Wang <jinpu.wang@cloud.ionos.com>,
Nilesh Javali <njavali@marvell.com>,
GR-QLogic-Storage-Upstream@marvell.com,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
Bart Van Assche <bvanassche@acm.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Alan Stern <stern@rowland.harvard.edu>,
linux-block@vger.kernel.org, linux-ide@vger.kernel.org,
linux1394-devel@lists.sourceforge.net,
MPT-FusionLinux.pdl@broadcom.com, linux-scsi@vger.kernel.org,
megaraidlinux.pdl@broadcom.com, mpi3mr-linuxdrv.pdl@broadcom.com,
linux-samsung-soc@vger.kernel.org, linux-usb@vger.kernel.org,
usb-storage@lists.one-eyed-alien.net,
Hannes Reinecke <hare@suse.de>
Subject: Re: [PATCH 04/23] scsi: initialize scsi midlayer limits before allocating the queue
Date: Thu, 16 May 2024 07:08:26 -0600 [thread overview]
Message-ID: <ff3277c1-f3ea-4e12-aeb6-548b97d42589@oracle.com> (raw)
In-Reply-To: <08beb913-f525-49e2-8ef2-f62e9d466e53@roeck-us.net>
On 15/05/2024 17:52, Guenter Roeck wrote:
> max_segment_size is 65280; PAGE_SIZE is 65536; BLK_MAX_SEGMENT_SIZE is
> 65536
> WARNING: CPU: 0 PID: 12 at block/blk-settings.c:202
> blk_validate_limits+0x2d4/0x364
> ...
>
> This is with PPC_BOOK3S_64 which selects a default page size of 64k.
> Looking at the old code, I think it did what you suggested above,
>
> void blk_queue_max_segment_size(struct request_queue *q, unsigned int
> max_size)
> {
> if (max_size < PAGE_SIZE) {
> max_size = PAGE_SIZE;
> printk(KERN_INFO "%s: set to minimum %d\n",
> __func__, max_size);
> }
> ...
>
> but assuming that the driver requested a lower limit on purpose that
> may not be the best solution.
Right, it is relied on that PAGE_SIZE can fit into a segment.
>
> Never mind, though - I updated my test configuration to explicitly
> configure the page size to 4k to work around the problem. With that,
> please consider this report a note in case someone hits the problem
> on a real system (and sorry for the noise).
Other controllers do have a 4K segment limit and are broken on systems
with 16/64K PAGE_SIZE, like:
https://lore.kernel.org/linux-block/20230612203314.17820-1-bvanassche@acm.org/
Thanks,
John
next prev parent reply other threads:[~2024-05-16 13:10 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-09 14:37 convert SCSI to atomic queue limits, part 1 (v3) Christoph Hellwig
2024-04-09 14:37 ` [PATCH 01/23] block: add a helper to cancel atomic queue limit updates Christoph Hellwig
2024-04-09 14:43 ` John Garry
2024-04-09 15:06 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 02/23] bsg: pass queue_limits to bsg_setup_queue Christoph Hellwig
2024-04-09 15:06 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 03/23] mpi3mr: " Christoph Hellwig
2024-04-09 15:06 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 04/23] scsi: initialize scsi midlayer limits before allocating the queue Christoph Hellwig
2024-04-09 15:08 ` Johannes Thumshirn
2024-05-15 21:50 ` Guenter Roeck
2024-05-15 22:16 ` John Garry
2024-05-15 23:52 ` Guenter Roeck
2024-05-16 13:08 ` John Garry [this message]
2024-05-16 14:50 ` Guenter Roeck
2024-04-09 14:37 ` [PATCH 05/23] scsi_transport_fc: add a max_bsg_segments field to struct fc_function_template Christoph Hellwig
2024-04-09 15:08 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 06/23] scsi: add a no_highmem flag to struct Scsi_Host Christoph Hellwig
2024-04-09 15:10 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 07/23] scsi: add a dma_alignment field to the host and host template Christoph Hellwig
2024-04-09 15:10 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 08/23] ufs-exynos: move setting the the dma alignment to the init method Christoph Hellwig
2024-04-09 15:11 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 09/23] scsi: use the atomic queue limits API in scsi_add_lun Christoph Hellwig
2024-04-09 15:12 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 10/23] scsi: add a device_configure method to the host template Christoph Hellwig
2024-04-09 15:13 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 11/23] megaraid_sas: switch to using ->device_configure Christoph Hellwig
2024-04-09 15:16 ` Johannes Thumshirn
2024-04-10 5:46 ` Hannes Reinecke
2024-04-09 14:37 ` [PATCH 12/23] mpt3sas: " Christoph Hellwig
2024-04-09 15:16 ` Johannes Thumshirn
2024-04-10 5:48 ` Hannes Reinecke
2024-04-09 14:37 ` [PATCH 13/23] sbp2: " Christoph Hellwig
2024-04-09 15:18 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 14/23] hptiop: " Christoph Hellwig
2024-04-09 15:18 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 15/23] ipr: " Christoph Hellwig
2024-04-09 15:19 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 16/23] pmcraid: " Christoph Hellwig
2024-04-09 15:19 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 17/23] usb-storage: " Christoph Hellwig
2024-04-09 15:20 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 18/23] sata_nv: " Christoph Hellwig
2024-04-09 14:37 ` [PATCH 19/23] pata_macio: " Christoph Hellwig
2024-04-09 14:37 ` [PATCH 20/23] libata: " Christoph Hellwig
2024-04-09 14:37 ` [PATCH 21/23] mpi3mr: " Christoph Hellwig
2024-04-09 15:34 ` Johannes Thumshirn
2024-04-10 4:25 ` Christoph Hellwig
2024-04-10 4:27 ` [PATCH 21/23 v3.1] " Christoph Hellwig
2024-04-10 8:01 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 22/23] uas: switch to using ->device_configure to configure queue limits Christoph Hellwig
2024-04-09 15:26 ` Johannes Thumshirn
2024-04-09 14:37 ` [PATCH 23/23] block: remove now unused queue limits helpers Christoph Hellwig
2024-04-09 15:26 ` Johannes Thumshirn
2024-04-12 2:04 ` convert SCSI to atomic queue limits, part 1 (v3) Martin K. Petersen
2024-04-25 1:57 ` Martin K. Petersen
-- strict thread matches above, loose matches on Subject: below --
2024-04-02 13:06 convert SCSI to atomic queue limits, part 1 (v2) Christoph Hellwig
2024-04-02 13:06 ` [PATCH 04/23] scsi: initialize scsi midlayer limits before allocating the queue Christoph Hellwig
2024-04-03 6:49 ` Hannes Reinecke
2024-03-24 23:54 convert SCSI to atomic queue limits, part 1 Christoph Hellwig
2024-03-24 23:54 ` [PATCH 04/23] scsi: initialize scsi midlayer limits before allocating the queue Christoph Hellwig
2024-03-25 7:20 ` Damien Le Moal
2024-03-25 17:43 ` Bart Van Assche
2024-03-27 14:54 ` John Garry
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