From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Alan Stern <stern@rowland.harvard.edu>,
Oliver Neukum <oneukum@suse.com>,
"iommu\@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
"linux-block\@vger.kernel.org" <linux-block@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
"linux-usb\@vger.kernel.org" <linux-usb@vger.kernel.org>
Subject: Re: How to resolve an issue in swiotlb environment?
Date: Thu, 13 Jun 2019 12:57:21 -0400 [thread overview]
Message-ID: <yq14l4ttocu.fsf@oracle.com> (raw)
In-Reply-To: <20190613073900.GC12093@lst.de> (Christoph Hellwig's message of "Thu, 13 Jun 2019 09:39:00 +0200")
Christoph,
> sd.c only supports a few specific sector size, and none of them is
> < 512 bytes:
Yep, while sd.c in theory supported 256-byte logical blocks a while
back, that code was removed since the block layer always operates on
units of 512 bytes.
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
Oliver Neukum <oneukum@suse.com>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
Alan Stern <stern@rowland.harvard.edu>
Subject: Re: How to resolve an issue in swiotlb environment?
Date: Thu, 13 Jun 2019 12:57:21 -0400 [thread overview]
Message-ID: <yq14l4ttocu.fsf@oracle.com> (raw)
In-Reply-To: <20190613073900.GC12093@lst.de> (Christoph Hellwig's message of "Thu, 13 Jun 2019 09:39:00 +0200")
Christoph,
> sd.c only supports a few specific sector size, and none of them is
> < 512 bytes:
Yep, while sd.c in theory supported 256-byte logical blocks a while
back, that code was removed since the block layer always operates on
units of 512 bytes.
--
Martin K. Petersen Oracle Linux Engineering
_______________________________________________
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-06-13 16:59 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-03 6:42 How to resolve an issue in swiotlb environment? Yoshihiro Shimoda
2019-06-03 6:42 ` Yoshihiro Shimoda
2019-06-07 12:00 ` Yoshihiro Shimoda
2019-06-07 12:00 ` Yoshihiro Shimoda
2019-06-10 7:31 ` Biju Das
2019-06-10 7:31 ` Biju Das
2019-06-10 11:13 ` Yoshihiro Shimoda
2019-06-10 11:13 ` Yoshihiro Shimoda
2019-06-10 12:32 ` Christoph Hellwig
2019-06-10 12:32 ` Christoph Hellwig
2019-06-10 18:46 ` Alan Stern
2019-06-10 18:46 ` Alan Stern
2019-06-11 6:41 ` Christoph Hellwig
2019-06-11 6:41 ` Christoph Hellwig
2019-06-11 14:51 ` Alan Stern
2019-06-11 14:51 ` Alan Stern
2019-06-12 7:30 ` Christoph Hellwig
2019-06-12 7:30 ` Christoph Hellwig
2019-06-12 8:52 ` Yoshihiro Shimoda
2019-06-12 8:52 ` Yoshihiro Shimoda
2019-06-12 11:31 ` Christoph Hellwig
2019-06-12 11:31 ` Christoph Hellwig
2019-06-13 4:52 ` Yoshihiro Shimoda
2019-06-13 4:52 ` Yoshihiro Shimoda
2019-06-12 11:46 ` Oliver Neukum
2019-06-12 11:46 ` Oliver Neukum
2019-06-12 12:06 ` Christoph Hellwig
2019-06-12 12:06 ` Christoph Hellwig
2019-06-12 14:43 ` Alan Stern
2019-06-12 14:43 ` Alan Stern
2019-06-13 7:39 ` Christoph Hellwig
2019-06-13 7:39 ` Christoph Hellwig
2019-06-13 16:57 ` Martin K. Petersen [this message]
2019-06-13 16:57 ` Martin K. Petersen
2019-06-13 17:16 ` Alan Stern
2019-06-13 17:16 ` Alan Stern
2019-06-13 18:18 ` Greg KH
2019-06-13 18:18 ` Greg KH
2019-06-13 23:01 ` shuah
2019-06-13 23:01 ` shuah
2019-06-14 14:44 ` Alan Stern
2019-06-14 14:44 ` Alan Stern
2019-06-18 15:28 ` shuah
2019-06-18 15:28 ` shuah
2019-06-19 20:23 ` shuah
2019-06-19 20:23 ` shuah
2019-06-19 21:05 ` Alan Stern
2019-06-19 21:05 ` Alan Stern
2019-06-21 17:43 ` Suwan Kim
2019-06-21 17:43 ` Suwan Kim
2019-06-11 6:49 ` Yoshihiro Shimoda
2019-06-11 6:49 ` Yoshihiro Shimoda
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