From: Greg KH <greg@kroah.com>
To: KY Srinivasan <kys@microsoft.com>
Cc: Christoph Hellwig <hch@infradead.org>,
"gregkh@suse.de" <gregkh@suse.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
"virtualization@lists.osdl.org" <virtualization@lists.osdl.org>
Subject: Re: [PATCH 00/25] Staging: hv: Cleanup vmbus driver code
Date: Sun, 1 May 2011 08:47:51 -0700 [thread overview]
Message-ID: <20110501154751.GA14040@kroah.com> (raw)
In-Reply-To: <20110501153920.GA15210@infradead.org>
On Sun, May 01, 2011 at 11:39:21AM -0400, Christoph Hellwig wrote:
> On Fri, Apr 29, 2011 at 04:32:35PM +0000, KY Srinivasan wrote:
> > On the host-side, as part of configuring a guest you can specify block devices
> > as being under an IDE controller or under a
> > SCSI controller. Those are the only options you have. Devices configured under
> > the IDE controller cannot be seen in the guest under the emulated SCSI front-end which is
> > the scsi driver (storvsc_drv). So, when you do a bus scan in the emulated scsi front-end,
> > the devices enumerated will not include block devices configured under the IDE
> > controller. So, it is not clear to me how I can do what you are proposing given the
> > restrictions imposed by the host.
>
> Just because a device is not reported by REPORT_LUNS doesn't mean you
> can't talk to it using a SCSI LLDD. We have SCSI transports with all
> kinds of strange ways to discover devices. Using scsi_add_device you
> can add LUNs found by your own discovery methods, and use all the
> existing scsi command handling.
Yeah, it seems to me that no matter how the user specifies the disk
"type" for the guest configuration, we should use the same Linux driver,
with the same naming scheme for both ways.
As Christoph points out, it's just a matter of hooking the device up to
the scsi subsystem. We do that today for ide, usb, scsi, and loads of
other types of devices all with the common goal of making it easier for
userspace to handle the devices in a standard manner.
thanks,
greg k-h
next prev parent reply other threads:[~2011-05-01 15:47 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-26 16:19 [PATCH 00/25] Staging: hv: Cleanup vmbus driver code K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 01/25] Staging: hv: Introduce a function to map a generic driver pointer to a pointer to storvsc_driver_object K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 02/25] Staging: hv: Get rid of the references to the priv element of struct hv_driver in block driver K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 03/25] Staging: hv: Get rid of the references to the priv element of struct hv_driver in hv_mouse.c K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 04/25] Staging: hv: Introduce a function to map a generic driver pointer to a pointer to struct netvsc_driver K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 05/25] Staging: hv: Get rid of the references to the priv element of struct hv_driver in net driver K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 06/25] Staging: hv: Get rid of the references to the priv element of struct hv_driver in storvsc_drv.c K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 07/25] Staging: hv: Cleanup vmbus_match() K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 08/25] Staging: hv: vmbus_driver cannot be unloaded; cleanup accordingly K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 22:45 ` Greg KH
2011-04-26 22:45 ` Greg KH
2011-04-27 2:31 ` KY Srinivasan
2011-04-27 4:55 ` uabuntsu
2011-04-27 4:55 ` uabuntsu
2011-04-28 0:20 ` Greg KH
2011-04-29 13:49 ` KY Srinivasan
2011-04-29 15:10 ` Greg KH
2011-04-29 17:40 ` KY Srinivasan
2011-04-29 22:02 ` KY Srinivasan
2011-04-29 23:14 ` Greg KH
2011-04-29 23:22 ` KY Srinivasan
2011-04-26 16:20 ` [PATCH 09/25] Staging: hv: Get rid of vmbus_release_unattached_channels() as it is not used K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 10/25] Staging: hv: Get rid of the priv pointer in struct hv_driver K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 11/25] Staging: hv: Get rid of the drv field in struct hv_device K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 22:56 ` Greg KH
2011-04-27 1:55 ` KY Srinivasan
2011-04-27 1:55 ` KY Srinivasan
2011-04-26 16:20 ` [PATCH 12/25] Staging: hv: Cleanup error handling in vmbus_child_device_register() K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 22:50 ` Greg KH
2011-04-27 2:11 ` KY Srinivasan
2011-04-28 0:25 ` Greg KH
2011-04-29 15:45 ` KY Srinivasan
2011-04-26 16:20 ` [PATCH 13/25] Staging: hv: Cleanup vmbus_probe() function K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 14/25] Staging: hv: Properly handle errors in hv_pci_probe() K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 15/25] Staging: hv: Make hv_pci_dev a static variable K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 16/25] Staging: hv: Make msg_dpc a global variable K. Y. Srinivasan
2011-04-26 22:43 ` Greg KH
2011-04-26 16:20 ` [PATCH 17/25] Staging: hv: Make event_dpc " K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 22:43 ` Greg KH
2011-04-26 22:43 ` Greg KH
2011-04-26 16:20 ` [PATCH 18/25] Staging: hv: Get rid of struct hv_bus K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 19:40 ` Greg KH
2011-04-26 20:23 ` KY Srinivasan
2011-04-26 20:58 ` Greg KH
2011-04-26 20:58 ` Greg KH
2011-04-26 22:12 ` KY Srinivasan
2011-04-26 16:20 ` [PATCH 19/25] Staging: hv: Add probe function to struct hv_driver K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 20/25] Staging: hv: Use the probe function in " K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:51 ` Christoph Hellwig
2011-04-26 16:20 ` [PATCH 21/25] Staging: hv: Add remove() function to " K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 22/25] Staging: hv: Use the remove() function in " K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 23/25] Staging: hv: Add shutdown() function to " K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 24/25] Staging: hv: Use the shutdown() function in " K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:20 ` [PATCH 25/25] Staging: hv: VMBUS is a acpi enumerated device; get irq value from bios K. Y. Srinivasan
2011-04-26 16:20 ` K. Y. Srinivasan
2011-04-26 16:57 ` [PATCH 00/25] Staging: hv: Cleanup vmbus driver code Christoph Hellwig
2011-04-26 17:04 ` KY Srinivasan
2011-04-26 17:04 ` KY Srinivasan
2011-04-26 19:39 ` Greg KH
2011-04-26 23:28 ` Greg KH
2011-04-27 1:54 ` KY Srinivasan
2011-04-27 6:45 ` Christoph Hellwig
2011-04-27 11:47 ` KY Srinivasan
2011-04-27 12:18 ` Christoph Hellwig
2011-04-29 16:32 ` KY Srinivasan
2011-04-29 16:40 ` Greg KH
2011-04-29 17:32 ` KY Srinivasan
2011-05-01 15:40 ` Christoph Hellwig
2011-05-01 15:46 ` KY Srinivasan
2011-05-01 16:07 ` Christoph Hellwig
2011-05-01 18:08 ` KY Srinivasan
2011-05-01 20:53 ` Christoph Hellwig
2011-05-02 19:48 ` KY Srinivasan
2011-05-02 20:00 ` Christoph Hellwig
2011-05-02 21:16 ` KY Srinivasan
2011-05-02 21:35 ` Christoph Hellwig
2011-05-02 22:11 ` KY Srinivasan
2011-05-01 15:39 ` Christoph Hellwig
2011-05-01 15:47 ` Greg KH [this message]
2011-05-01 18:56 ` KY Srinivasan
2011-05-01 18:56 ` KY Srinivasan
2011-05-01 20:47 ` Christoph Hellwig
2011-04-28 0:28 ` Greg KH
2011-04-29 14:26 ` KY Srinivasan
2011-04-29 14:26 ` KY Srinivasan
2011-04-29 15:08 ` Greg KH
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