From: Long Li <longli@microsoft.com>
To: Christoph Hellwig <hch@infradead.org>,
Bart Van Assche <bvanassche@acm.org>
Cc: "longli@linuxonhyperv.com" <longli@linuxonhyperv.com>,
"linux-fs@vger.kernel.org" <linux-fs@vger.kernel.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Subject: RE: [Patch v4 0/3] Introduce a driver to support host accelerated access to Microsoft Azure Blob
Date: Tue, 20 Jul 2021 07:05:37 +0000 [thread overview]
Message-ID: <DM6PR21MB15138B5D5C8647C92EA6AB99CEE29@DM6PR21MB1513.namprd21.prod.outlook.com> (raw)
In-Reply-To: <YPZmtOmpK6+znL0I@infradead.org>
> Subject: Re: [Patch v4 0/3] Introduce a driver to support host accelerated
> access to Microsoft Azure Blob
>
> On Mon, Jul 19, 2021 at 09:37:56PM -0700, Bart Van Assche wrote:
> > such that this object storage driver can be implemented as a
> > user-space library instead of as a kernel driver? As you may know vfio
> > users can either use eventfds for completion notifications or polling.
> > An interface like io_uring can be built easily on top of vfio.
>
> Yes. Similar to say the NVMe K/V command set this does not look like a
> candidate for a kernel driver.
The driver is modeled to support multiple processes/users over a VMBUS
channel. I don't see a way that this can be implemented through VFIO?
Even if it can be done, this exposes a security risk as the same VMBUS
channel is shared by multiple processes in user-mode.
next prev parent reply other threads:[~2021-07-20 7:05 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-20 3:31 [Patch v4 0/3] Introduce a driver to support host accelerated access to Microsoft Azure Blob longli
2021-07-20 3:31 ` [Patch v4 1/3] Drivers: hv: vmbus: add support to ignore certain PCIE devices longli
2021-07-20 3:31 ` [Patch v4 2/3] Drivers: hv: add Azure Blob driver longli
2021-07-20 5:26 ` Greg Kroah-Hartman
2021-07-20 5:30 ` Greg Kroah-Hartman
2021-07-20 7:34 ` Greg Kroah-Hartman
2021-07-20 19:57 ` Long Li
2021-07-21 5:08 ` Greg Kroah-Hartman
2021-07-20 11:10 ` Jiri Slaby
2021-07-20 22:12 ` Long Li
2021-07-21 4:57 ` Jiri Slaby
2021-07-21 16:07 ` Long Li
2021-07-20 3:31 ` [Patch v4 3/3] Drivers: hv: Add to maintainer for Hyper-V/Azure drivers longli
2021-07-20 4:37 ` [Patch v4 0/3] Introduce a driver to support host accelerated access to Microsoft Azure Blob Bart Van Assche
2021-07-20 6:01 ` Christoph Hellwig
2021-07-20 7:05 ` Long Li [this message]
2021-07-20 15:15 ` Bart Van Assche
2021-07-20 17:33 ` Long Li
2021-07-20 18:16 ` gregkh
2021-07-20 18:52 ` Long Li
2021-07-20 15:54 ` Greg KH
2021-07-20 18:37 ` Long Li
2021-07-21 5:18 ` Greg KH
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